Merge branch 'main' into glossing/transient-processor

Reviewed-on: https://codeberg.org/uzu/strudel/pulls/1781

packages/core/controls.mjs

@@ -72,6 +72,27 @@ export function registerControl(names, ...aliases) {
   return bag;
 }
 
+export function registerMultiControl(names, maxControls, ...aliases) {
+  names = Array.isArray(names) ? names : [names];
+  let bag = {};
+  for (let i = 1; i <= maxControls; i++) {
+    let theseAliases = [...aliases];
+    let theseNames = [...names];
+    if (i === 1) {
+      // adds e.g. fm1 as an alias for fm
+      const aliases1 = theseAliases.map((a) => `${a}1`);
+      const names1 = theseNames.map((n) => `${n}1`);
+      theseAliases = theseAliases.concat(aliases1).concat(names1);
+    } else {
+      theseAliases = theseAliases.map((a) => `${a}${i}`);
+      theseNames = theseNames.map((n) => `${n}${i}`);
+    }
+    const subBag = registerControl(theseNames, ...theseAliases);
+    bag = { ...bag, ...subBag };
+  }
+  return bag;
+}
+
 /**
  * Select a sound / sample by name. When using mininotation, you can also optionally supply 'n' and 'gain' parameters
  * separated by ':'.
@@ -380,12 +401,13 @@ export const { accelerate } = registerControl('accelerate');
  * Sets the velocity from 0 to 1. Is multiplied together with gain.
  *
  * @name velocity
+ * @synonyms vel
  * @example
  * s("hh*8")
  * .gain(".4!2 1 .4!2 1 .4 1")
  * .velocity(".4 1")
  */
-export const { velocity } = registerControl('velocity');
+export const { velocity, vel } = registerControl('velocity', 'vel');
 /**
  * Controls the gain by an exponential amount.
  *
@@ -435,6 +457,9 @@ export const { attack, att } = registerControl('attack', 'att');
  * Whole numbers and simple ratios sound more natural,
  * while decimal numbers and complex ratios sound metallic.
  *
+ * A number may be added afterwards to control the harmonicity of
+ * any of the 8 individual FMs (e.g. `fmh2`)
+ *
  * @name fmh
  * @param {number | Pattern} harmonicity
  * @example
@@ -444,25 +469,40 @@ export const { attack, att } = registerControl('attack', 'att');
  * ._scope()
  *
  */
-export const { fmh } = registerControl(['fmh', 'fmi'], 'fmh');
+export const { fmh, fmh1, fmh2, fmh3, fmh4, fmh5, fmh6, fmh7, fmh8 } = registerMultiControl(['fmh', 'fmi'], 8, 'fmh');
+
 /**
  * Sets the Frequency Modulation of the synth.
  * Controls the modulation index, which defines the brightness of the sound.
  *
- * @name fm
+ * A number may be added afterwards to control the modulation index of
+ * any of the 8 individual FMs (e.g. `fm3`). Also, FMs may be routed into
+ * each other with matrix commands like `fm13`, which would send `fm1` back into
+ * `fm3`
+ *
+ * @name fmi
  * @param {number | Pattern} brightness modulation index
- * @synonyms fmi
+ * @synonyms fm
  * @example
  * note("c e g b g e")
  * .fm("<0 1 2 8 32>")
  * ._scope()
+ * @example
+ * s("sine").note("F1").seg(8)
+ *  .fm(4).fm2(rand.mul(4)).fm3(saw.mul(8).slow(8))
+ *  .fmh(1.06).fmh2(10).fmh3(0.1)
  *
  */
-export const { fmi, fm } = registerControl(['fmi', 'fmh'], 'fm');
+export const { fmi, fmi1, fmi2, fmi3, fmi4, fmi5, fmi6, fmi7, fmi8, fm, fm1, fm2, fm3, fm4, fm5, fm6, fm7, fm8 } =
+  registerMultiControl(['fmi', 'fmh'], 8, 'fm');
+
 // fm envelope
 /**
  * Ramp type of fm envelope. Exp might be a bit broken..
  *
+ * A number may be added afterwards to control the envelope of
+ * any of the 8 individual FMs (e.g. `fmenv4`)
+ *
  * @name fmenv
  * @param {number | Pattern} type lin | exp
  * @example
@@ -474,11 +514,19 @@ export const { fmi, fm } = registerControl(['fmi', 'fmh'], 'fm');
  * ._scope()
  *
  */
-export const { fmenv } = registerControl('fmenv');
+export const { fmenv, fmenv1, fmenv2, fmenv3, fmenv4, fmenv5, fmenv6, fmenv7, fmenv8 } = registerMultiControl(
+  'fmenv',
+  8,
+);
+
 /**
  * Attack time for the FM envelope: time it takes to reach maximum modulation
  *
+ * A number may be added afterwards to control the attack of the envelope of
+ * any of the 8 individual FMs (e.g. `fmatt5`)
+ *
  * @name fmattack
+ * @synonyms fmatt
  * @param {number | Pattern} time attack time
  * @example
  * note("c e g b g e")
@@ -487,11 +535,33 @@ export const { fmenv } = registerControl('fmenv');
  * ._scope()
  *
  */
-export const { fmattack } = registerControl('fmattack');
+export const {
+  fmattack,
+  fmattack1,
+  fmattack2,
+  fmattack3,
+  fmattack4,
+  fmattack5,
+  fmattack6,
+  fmattack7,
+  fmattack8,
+  fmatt,
+  fmatt1,
+  fmatt2,
+  fmatt3,
+  fmatt4,
+  fmatt5,
+  fmatt6,
+  fmatt7,
+  fmatt8,
+} = registerMultiControl('fmattack', 8, 'fmatt');
 
 /**
  * Waveform of the fm modulator
  *
+ * A number may be added afterwards to control the waveform
+ * any of the 8 individual FMs (e.g. `fmwave6`)
+ *
  * @name fmwave
  * @param {number | Pattern} wave waveform
  * @example
@@ -500,12 +570,19 @@ export const { fmattack } = registerControl('fmattack');
  * n("0 1 2 3".fast(4)).chord("<Dm Am F G>").voicing().s("sawtooth").fmwave("brown").fm(.6)
  *
  */
-export const { fmwave } = registerControl('fmwave');
+export const { fmwave, fmwave1, fmwave2, fmwave3, fmwave4, fmwave5, fmwave6, fmwave7, fmwave8 } = registerMultiControl(
+  'fmwave',
+  8,
+);
 
 /**
  * Decay time for the FM envelope: seconds until the sustain level is reached after the attack phase.
  *
+ * A number may be added afterwards to control the decay of the envelope of
+ * any of the 8 individual FMs (e.g. `fmdec6`)
+ *
  * @name fmdecay
+ * @synonyms fmdec
  * @param {number | Pattern} time decay time
  * @example
  * note("c e g b g e")
@@ -515,11 +592,35 @@ export const { fmwave } = registerControl('fmwave');
  * ._scope()
  *
  */
-export const { fmdecay } = registerControl('fmdecay');
+export const {
+  fmdecay,
+  fmdecay1,
+  fmdecay2,
+  fmdecay3,
+  fmdecay4,
+  fmdecay5,
+  fmdecay6,
+  fmdecay7,
+  fmdecay8,
+  fmdec,
+  fmdec1,
+  fmdec2,
+  fmdec3,
+  fmdec4,
+  fmdec5,
+  fmdec6,
+  fmdec7,
+  fmdec8,
+} = registerMultiControl('fmdecay', 8, 'fmdec');
+
 /**
  * Sustain level for the FM envelope: how much modulation is applied after the decay phase
  *
+ * A number may be added afterwards to control the sustain of the envelope of
+ * any of the 8 individual FMs (e.g. `fmsus7`)
+ *
  * @name fmsustain
+ * @synonyms fmsus
  * @param {number | Pattern} level sustain level
  * @example
  * note("c e g b g e")
@@ -529,10 +630,69 @@ export const { fmdecay } = registerControl('fmdecay');
  * ._scope()
  *
  */
-export const { fmsustain } = registerControl('fmsustain');
-// these are not really useful... skipping for now
-export const { fmrelease } = registerControl('fmrelease');
-export const { fmvelocity } = registerControl('fmvelocity');
+export const {
+  fmsustain,
+  fmsustain1,
+  fmsustain2,
+  fmsustain3,
+  fmsustain4,
+  fmsustain5,
+  fmsustain6,
+  fmsustain7,
+  fmsustain8,
+  fmsus,
+  fmsus1,
+  fmsus2,
+  fmsus3,
+  fmsus4,
+  fmsus5,
+  fmsus6,
+  fmsus7,
+  fmsus8,
+} = registerMultiControl('fmsustain', 8, 'fmsus');
+
+/**
+ * Release time for the FM envelope: how much modulation is applied after the note is released
+ *
+ * A number may be added afterwards to control the release of the envelope of
+ * any of the 8 individual FMs (e.g. `fmrel8`)
+ *
+ * @name fmrelease
+ * @synonyms fmrel
+ * @param {number | Pattern} time release time
+ *
+ */
+export const {
+  fmrelease,
+  fmrelease1,
+  fmrelease2,
+  fmrelease3,
+  fmrelease4,
+  fmrelease5,
+  fmrelease6,
+  fmrelease7,
+  fmrelease8,
+  fmrel,
+  fmrel1,
+  fmrel2,
+  fmrel3,
+  fmrel4,
+  fmrel5,
+  fmrel6,
+  fmrel7,
+  fmrel8,
+} = registerMultiControl('fmrelease', 8, 'fmrel');
+
+// FM Matrix
+// Note: we do not declare top-level exports here since it would add
+// ~162 more explicit exports. This is likely fine as the most common use-case would be to at least
+// declare one other FM prior to utilizing the matrix functionality, but if we ever decide we need it,
+// TODO to add it explicitly / go with the globalThis approach
+for (let i = 0; i <= 8; i++) {
+  for (let j = 0; j <= 8; j++) {
+    registerControl(`fmi${i}${j}`, `fm${i}${j}`);
+  }
+}
 
 /**
  * Select the sound bank to use. To be used together with `s`. The bank name (+ "_") will be prepended to the value of `s`.
@@ -1323,14 +1483,13 @@ export const { lpdepth } = registerControl('lpdepth');
  * Depth of the LFO for the lowpass filter, in HZ
  *
  * @name lpdepthfrequency
- * @synonyms
- * lpdethfreq
+ * @synonyms lpdepthfreq
  * @param {number | Pattern} depth depth of modulation
  * @example
  * note("<c c c# c c c4>*16").s("sawtooth").lpf(600).lpdepthfrequency("<200 500 100 0>")
  */
 
-export const { lpdepthfrequency } = registerControl('lpdepthfrequency', 'lpdepthfreq');
+export const { lpdepthfrequency, lpdepthfreq } = registerControl('lpdepthfrequency', 'lpdepthfreq');
 
 /**
  * Shape of the LFO for the lowpass filter
@@ -1384,14 +1543,13 @@ export const { bpdepth } = registerControl('bpdepth');
  * Depth of the LFO for the bandpass filter, in HZ
  *
  * @name bpdepthfrequency
- * @synonyms
- * bpdethfreq
+ * @synonyms bpdepthfreq
  * @param {number | Pattern} depth depth of modulation
  * @example
  * note("<c c c# c c c4>*16").s("sawtooth").lpf(600).bpdepthfrequency("<200 500 100 0>")
  */
 
-export const { bpdepthfrequency } = registerControl('bpdepthfrequency', 'bpdepthfreq');
+export const { bpdepthfrequency, bpdepthfreq } = registerControl('bpdepthfrequency', 'bpdepthfreq');
 
 /**
  * Shape of the LFO for the bandpass filter
@@ -1439,20 +1597,19 @@ export const { hpsync } = registerControl('hpsync');
  * @name hpdepth
  * @param {number | Pattern} depth depth of modulation
  */
-export const { hpdepth, hpdepthfreq } = registerControl('hpdepth');
+export const { hpdepth } = registerControl('hpdepth');
 
 /**
  * Depth of the LFO for the hipass filter, in hz
  *
  * @name hpdepthfrequency
- * @synonyms
- * hpdethfreq
+ * @synonyms hpdepthfreq
  * @param {number | Pattern} depth depth of modulation
  * @example
  * note("<c c c# c c c4>*16").s("sawtooth").lpf(600).hpdepthfrequency("<200 500 100 0>")
  */
 
-export const { hpdepthfrequency } = registerControl('hpdepthfrequency', 'hpdepthfreq');
+export const { hpdepthfrequency, hpdepthfreq } = registerControl('hpdepthfrequency', 'hpdepthfreq');
 
 /**
  * Shape of the LFO for the highpass filter
@@ -2629,3 +2786,17 @@ export const scrub = register(
   },
   false,
 );
+
+/**
+ * Transient shaper. Gives independent control over the emphasis on transients
+ * and sustains
+ *
+ * @name transient
+ * @param {number | Pattern} attack Emphasis on transients; between -1 (deaccentuate) and 1 (accentuate)
+ * @param {number | Pattern} sustain Emphasis on the sustains; between -1 (deaccentuate) and 1 (accentuate)
+ * @example
+ * s("bd").transient("<-1 -0.5 0 0.5 1>")
+ * @example
+ * s("hh*16").bank("tr909").transient("<-1:1 1:-1>")
+ */
+export const { transient } = registerControl(['transient', 'transsustain']);

packages/core/pattern.mjs

@@ -574,7 +574,8 @@ export class Pattern {
    * Returns a new Pattern, which only returns haps that meet the given test.
    * @param {Function} hap_test - a function which returns false for haps to be removed from the pattern
    * @returns Pattern
-   * @noAutocomplete
+   * @example
+   * s("bd*8").velocity(rand).filterHaps((h) => (h.whole.begin % 1) < h.value.velocity)
    */
   filterHaps(hap_test) {
     return new Pattern((state) => this.query(state).filter(hap_test));
@@ -585,7 +586,11 @@ export class Pattern {
    * inside haps.
    * @param {Function} value_test
    * @returns Pattern
-   * @noAutocomplete
+   * @example
+   * const drums = s("bd sd bd sd")
+   * kick: drums.filterValues((v) => v.s === 'bd').duck(2)
+   * snare: drums.filterValues((v) => v.s === 'sd')
+   * bass: s("saw!4").note("G#1").lpf(80).lpenv(4).orbit(2)
    */
   filterValues(value_test) {
     return new Pattern((state) => this.query(state).filter((hap) => value_test(hap.value))).setSteps(this._steps);
@@ -1587,7 +1592,13 @@ export const func = curry((a, b) => reify(b).func(a));
  *
  * @param {string | string[]} name name of the function, or an array of names to be used as synonyms
  * @param {function} func function with 1 or more params, where last is the current pattern
- * @noAutocomplete
+ * @param {bool} patternify defaults to true; if set to false, you will have more control over the arguments to `func` as they will be
+ *   in their raw form and it will be up to you to patternify them and/or query them for values
+ * @example
+ * const vlpf = register('vlpf', (freq, pat) => {
+ *   return pat.fmap((v) => ({...v, cutoff: freq * (v.velocity ?? 1) }));
+ * })
+ * s("saw").seg(8).velocity(rand).vlpf(800)
  *
  */
 export function register(name, func, patternify = true, preserveSteps = false, join = (x) => x.innerJoin()) {
@@ -2234,7 +2245,7 @@ export const brak = register('brak', function (pat) {
 });
 
 /**
- * Reverse all haps in a pattern
+ * Reverse all cycles in a pattern. See also `revv` for reversing a whole pattern.
  *
  * @name rev
  * @memberof Pattern
@@ -2266,6 +2277,23 @@ export const rev = register(
   true,
 );
 
+/**
+ * Reverse a whole pattern. See also `rev` for reversing each cycle.
+ *
+ * @name revv
+ * @memberof Pattern
+ * @returns Pattern
+ * @example
+ * // This is the same as `<[g e] [d c]>`. If `rev()` is used, you get
+ * // the same as `<[d c] [g e]>`, where each cycle reverses, but the order of
+ * // cycles stays the same.
+ * note("<[c d] [e g]>").revv()
+ */
+export const revv = register('revv', function (pat) {
+  const negateSpan = (span) => new TimeSpan(Fraction(0).sub(span.end), Fraction(0).sub(span.begin));
+  return pat.withQuerySpan(negateSpan).withHapSpan(negateSpan);
+});
+
 /** Like press, but allows you to specify the amount by which each
  * event is shifted. pressBy(0.5) is the same as press, while
  * pressBy(1/3) shifts each event by a third of its timespan.
@@ -2659,8 +2687,13 @@ export const hsl = register('hsl', (h, s, l, pat) => {
 /**
  * Tags each Hap with an identifier. Good for filtering. The function populates Hap.context.tags (Array).
  * @name tag
- * @noAutocomplete
  * @param {string} tag anything unique
+ * @example
+ * s("saw!16").note("F1")
+ *   .lpf(tri.range(40, 80).slow(4)).lpenv(5).lpq(4).lpd(0.15)
+ *   .when(rand.late(0.1).gte(0.5), x => x.transpose("12").tag('altered'))
+ *   .when(rand.late(0.2).gte(0.5), x => x.s("square").tag('altered'))
+ *   .when("<0 1>", x => x.filter((hap) => hap.hasTag('altered')))
  */
 Pattern.prototype.tag = function (tag) {
   return this.withContext((ctx) => ({ ...ctx, tags: (ctx.tags || []).concat([tag]) }));
@@ -2671,15 +2704,16 @@ Pattern.prototype.tag = function (tag) {
  * @name filter
  * @param {Function} test function to test Hap
  * @example
- * s("hh!7 oh").filter(hap => hap.value.s==='hh')
+ * s("hh!7 oh").filter(hap => hap.value.s === 'hh')
  */
 export const filter = register('filter', (test, pat) => pat.withHaps((haps) => haps.filter(test)));
 
 /**
  * Filters haps by their begin time
  * @name filterWhen
- * @noAutocomplete
  * @param {Function} test function to test Hap.whole.begin
+ * @example
+ * oneCycle: s("bd*4").filterWhen((t) => t < 1)
  */
 export const filterWhen = register('filterWhen', (test, pat) => pat.filter((h) => test(h.whole.begin)));
 

packages/core/test/pattern.test.mjs

@@ -586,6 +586,18 @@ describe('Pattern', () => {
           .map((a) => a.value),
       ).toStrictEqual(['c', 'b', 'a']);
     });
+    it('Does not reverse the order of cycles', () => {
+      expect(fastcat('a', 'b', 'c', 'd').slow(2).rev().fast(2).sortHapsByPart().firstCycle()).toStrictEqual(
+        fastcat('b', 'a', 'd', 'c').firstCycle(),
+      );
+    });
+  });
+  describe('revv()', () => {
+    it('Does reverse the order of cycles', () => {
+      expect(fastcat('a', 'b', 'c', 'd').slow(2).revv().fast(2).sortHapsByPart().firstCycle()).toStrictEqual(
+        fastcat('d', 'c', 'b', 'a').firstCycle(),
+      );
+    });
   });
   describe('sequence()', () => {
     it('Can work like fastcat', () => {

packages/soundfonts/fontloader.mjs

@@ -6,6 +6,7 @@ import {
   getADSRValues,
   getPitchEnvelope,
   getVibratoOscillator,
+  onceEnded,
 } from '@strudel/webaudio';
 import gm from './gm.mjs';
 
@@ -170,12 +171,12 @@ export function registerSoundfonts() {
 
         bufferSource.stop(envEnd);
         const stop = (releaseTime) => {};
-        bufferSource.onended = () => {
+        onceEnded(bufferSource, () => {
           bufferSource.disconnect();
           vibratoOscillator?.stop();
           node.disconnect();
           onended();
-        };
+        });
         return { node, stop };
       },
       { type: 'soundfont', prebake: true, fonts },

packages/superdough/helpers.mjs

@@ -1,7 +1,7 @@
 import { getAudioContext } from './audioContext.mjs';
-import { clamp, nanFallback, midiToFreq, noteToMidi } from './util.mjs';
-import { getNoiseBuffer } from './noise.mjs';
 import { logger } from './logger.mjs';
+import { getNoiseBuffer } from './noise.mjs';
+import { clamp, nanFallback, midiToFreq, noteToMidi } from './util.mjs';
 
 export const noises = ['pink', 'white', 'brown', 'crackle'];
 
@@ -240,6 +240,7 @@ export function createFilter(context, start, end, params, cps, cycle) {
     rate = cps * sync;
   }
   const hasLFO = [depth, depthfrequency, skew, shape, rate].some((v) => v !== undefined);
+  let lfo;
   if (hasLFO) {
     depth = depth ?? 1;
     const time = cycle / cps;
@@ -255,10 +256,10 @@ export function createFilter(context, start, end, params, cps, cycle) {
       time,
       curve: 1,
     };
-    getParamLfo(context, frequencyParam, start, end, lfoValues);
+    lfo = getParamLfo(context, frequencyParam, start, end, lfoValues);
   }
 
-  return filter;
+  return { filter, lfo };
 }
 
 // stays 1 until .5, then fades out
@@ -348,25 +349,17 @@ export function webAudioTimeout(audioContext, onComplete, startTime, stopTime) {
   constantNode.connect(zeroGain);
 
   // Schedule the `onComplete` callback to occur at `stopTime`
-  constantNode.onended = () => {
-    // Ensure garbage collection
-    try {
-      zeroGain.disconnect();
-    } catch {
-      // pass
-    }
-    try {
-      constantNode.disconnect();
-    } catch {
-      // pass
-    }
+  onceEnded(constantNode, () => {
+    releaseAudioNode(zeroGain);
+    releaseAudioNode(constantNode);
     onComplete();
-  };
+  });
   constantNode.start(startTime);
   constantNode.stop(stopTime);
   return constantNode;
 }
-const mod = (freq, range = 1, type = 'sine') => {
+
+const mod = (freq, type = 'sine') => {
   const ctx = getAudioContext();
   let osc;
   if (noises.includes(type)) {
@@ -378,69 +371,89 @@ const mod = (freq, range = 1, type = 'sine') => {
     osc.type = type;
     osc.frequency.value = freq;
   }
-
   osc.start();
-  const g = gainNode(range);
-  osc.connect(g); // -range, range
-  return { node: g, stop: (t) => osc.stop(t), osc: osc };
+  return osc;
 };
-const fm = (frequencyparam, harmonicityRatio, modulationIndex, wave = 'sine') => {
+
+const fm = (frequencyparam, harmonicityRatio, wave = 'sine') => {
   const carrfreq = frequencyparam.value;
   const modfreq = carrfreq * harmonicityRatio;
-  const modgain = modfreq * modulationIndex;
-  return mod(modfreq, modgain, wave);
+  return { osc: mod(modfreq, wave), freq: modfreq };
 };
+
 export function applyFM(param, value, begin) {
-  const {
-    fmh: fmHarmonicity = 1,
-    fmi: fmModulationIndex,
-    fmenv: fmEnvelopeType = 'exp',
-    fmattack: fmAttack,
-    fmdecay: fmDecay,
-    fmsustain: fmSustain,
-    fmrelease: fmRelease,
-    fmvelocity: fmVelocity,
-    fmwave: fmWaveform = 'sine',
-    duration,
-  } = value;
-  let modulator;
-  let stop = () => {};
-
-  if (fmModulationIndex) {
-    const ac = getAudioContext();
-    const envGain = ac.createGain();
-    const fmmod = fm(param, fmHarmonicity, fmModulationIndex, fmWaveform);
-
-    modulator = fmmod.node;
-    stop = fmmod.stop;
-    if (![fmAttack, fmDecay, fmSustain, fmRelease, fmVelocity].some((v) => v !== undefined)) {
-      // no envelope by default
-      modulator.connect(param);
-    } else {
-      const [attack, decay, sustain, release] = getADSRValues([fmAttack, fmDecay, fmSustain, fmRelease]);
-      const holdEnd = begin + duration;
-      getParamADSR(
-        envGain.gain,
-        attack,
-        decay,
-        sustain,
-        release,
-        0,
-        1,
-        begin,
-        holdEnd,
-        fmEnvelopeType === 'exp' ? 'exponential' : 'linear',
-      );
-      modulator.connect(envGain);
-      envGain.connect(param);
+  const ac = getAudioContext();
+  const toStop = []; // fm oscillators we will expose `stop` for
+  const fms = {};
+  // Matrix
+  for (let i = 1; i <= 8; i++) {
+    for (let j = 0; j <= 8; j++) {
+      let control;
+      if (i === j + 1) {
+        // Standard fm3 -> fm2 -> fm1 -> param usage
+        const iS = i === 1 ? '' : i;
+        control = `fmi${iS}`;
+      } else {
+        control = `fmi${i}${j}`;
+      }
+      const amt = value[control];
+      if (!amt) continue;
+      let io = [];
+      for (let [isMod, idx] of [
+        [true, i], // source
+        [false, j], // target
+      ]) {
+        if (idx === 0) {
+          io.push(param);
+          continue;
+        }
+        if (!fms[idx]) {
+          const idxS = idx === 1 ? '' : idx;
+          const { osc, freq } = fm(param, value[`fmh${idxS}`] ?? 1, value[`fmwave${idxS}`] ?? 'sine');
+          toStop.push(osc);
+          const toCleanup = [osc]; // nodes we want to cleanup after oscillator `stop`
+          const adsr = ['attack', 'decay', 'sustain', 'release'].map((s) => value[`fm${s}${idxS}`]);
+          let output = osc;
+          if (adsr.some((v) => v !== undefined)) {
+            const envGain = ac.createGain();
+            const [attack, decay, sustain, release] = getADSRValues(adsr);
+            const holdEnd = begin + value.duration;
+            const fmEnvelopeType = value[`fmenv${idxS}`] ?? 'exp';
+            getParamADSR(
+              envGain.gain,
+              attack,
+              decay,
+              sustain,
+              release,
+              0,
+              1,
+              begin,
+              holdEnd,
+              fmEnvelopeType === 'exp' ? 'exponential' : 'linear',
+            );
+            toCleanup.push(envGain);
+            output = osc.connect(envGain);
+          }
+          fms[idx] = { input: osc.frequency, output, freq, osc, toCleanup };
+        }
+        const { input, output, freq, osc, toCleanup } = fms[idx];
+        const g = gainNode(amt * freq);
+        io.push(isMod ? output.connect(g) : input);
+        cleanupOnEnd(osc, [...toCleanup, g]);
+      }
+      if (!io[1]) {
+        logger(
+          `[superdough] control ${control} failed to connect FM ${i} to target ${j} due to missing frequency parameter (likely because fm${j} is noise)`,
+          'warning',
+        );
+        continue;
+      }
+      io[0].connect(io[1]);
     }
-    fmmod.osc.onended = () => {
-      envGain.disconnect();
-      modulator.disconnect();
-      fmmod.osc.disconnect();
-    };
   }
-  return { stop };
+  return {
+    stop: (t) => toStop.forEach((m) => m?.stop(t)),
+  };
 }
 
 // Saturation curves
@@ -553,10 +566,58 @@ export const getFrequencyFromValue = (value, defaultNote = 36) => {
   return Number(freq);
 };
 
-export const destroyAudioWorkletNode = (node) => {
-  if (node == null) {
-    return;
-  }
-  node.disconnect();
-  node.parameters.get('end')?.setValueAtTime(0, 0);
+// This helper should be used instead of the `node.onended = callback` pattern
+// It adds a mechanism to help minimize gc retention
+export const onceEnded = (node, callback) => {
+  const onended = callback;
+  node.onended = function cleanup() {
+    onended && onended();
+    this.onended = null;
+  };
+};
+
+export const releaseAudioNode = (node) => {
+  if (node == null) return;
+
+  // check we received an AudioNode
+  if (!(node instanceof AudioNode)) {
+    throw new Error('releaseAudioNode can only release an AudioNode');
+  }
+
+  // https://developer.mozilla.org/en-US/docs/Web/API/AudioNode/disconnect
+  node.disconnect();
+
+  // make sure all AudioScheduledSourceNodes are in a stopped state
+  // https://developer.mozilla.org/en-US/docs/Web/API/AudioScheduledSourceNode
+  if (node instanceof AudioScheduledSourceNode) {
+    if (node.onended && node.onended.name !== 'cleanup') {
+      logger(
+        `[superdough] Deprecation warning: it seems your code path is setting 'node.onended = callback' instead of using the onceEnded helper`,
+      );
+    }
+    try {
+      node.stop();
+    } catch (e) {
+      // At the stage, `start` was not called on the node
+      // but an `onended` callback releasing resources may exist
+      // and we want it to fire :
+      // - we force a start/stop cycle so that `onended` gets called
+      // - we `lock` the node so that no-one can start it
+      node.start(node.context.currentTime + 5); // will never happen
+      node.stop();
+    }
+  }
+
+  // https://www.w3.org/TR/webaudio-1.1/#AudioNode-actively-processing
+  // An AudioWorkletNode is actively processing when its AudioWorkletProcessor's [[callable process]]
+  // returns true and either its active source flag is true or
+  // any AudioNode connected to one of its inputs is actively processing.
+  if (node instanceof AudioWorkletNode) {
+    node.parameters.get('end')?.setValueAtTime(0, 0);
+  }
+};
+
+// Once the `anchor` node has ended, release all nodes in `toCleanup`
+export const cleanupOnEnd = (anchor, toCleanup) => {
+  onceEnded(anchor, () => toCleanup.forEach((n) => releaseAudioNode(n)));
 };

packages/superdough/sampler.mjs

@@ -1,7 +1,14 @@
 import { getBaseURL, getCommonSampleInfo } from './util.mjs';
 import { registerSound, registerWaveTable } from './index.mjs';
 import { getAudioContext } from './audioContext.mjs';
-import { getADSRValues, getParamADSR, getPitchEnvelope, getVibratoOscillator } from './helpers.mjs';
+import {
+  getADSRValues,
+  getParamADSR,
+  getPitchEnvelope,
+  getVibratoOscillator,
+  onceEnded,
+  releaseAudioNode,
+} from './helpers.mjs';
 import { logger } from './logger.mjs';
 
 const bufferCache = {}; // string: Promise<ArrayBuffer>
@@ -236,12 +243,6 @@ export async function fetchSampleMap(url) {
  *  sd: '808sd/SD0010.WAV'
  *  }, 'https://raw.githubusercontent.com/tidalcycles/Dirt-Samples/master/');
  * s("[bd ~]*2, [~ hh]*2, ~ sd")
- * @example
- * samples('shabda:noise,chimp:2')
- * s("noise <chimp:0*2 chimp:1>")
- * @example
- * samples('shabda/speech/fr-FR/f:chocolat')
- * s("chocolat*4")
  */
 
 export const samples = async (sampleMap, baseUrl = sampleMap._base || '', options = {}) => {
@@ -286,17 +287,19 @@ export async function onTriggerSample(t, value, onended, bank, resolveUrl) {
 
   const { bufferSource, sliceDuration, offset } = await getSampleBufferSource(value, bank, resolveUrl);
 
-  // asny stuff above took too long?
-  if (ac.currentTime > t) {
-    logger(`[sampler] still loading sound "${s}:${n}"`, 'highlight');
-    // console.warn('sample still loading:', s, n);
-    return;
-  }
   if (!bufferSource) {
     logger(`[sampler] could not load "${s}:${n}"`, 'error');
     return;
   }
 
+  // async stuff above took too long?
+  if (ac.currentTime > t) {
+    logger(`[sampler] loading sound "${s}:${n}" took too long`, 'highlight');
+    // AudioBufferSourceNode will never be used. discard it
+    releaseAudioNode(bufferSource);
+    return;
+  }
+
   // vibrato
   let vibratoOscillator = getVibratoOscillator(bufferSource.detune, value, t);
 
@@ -319,13 +322,13 @@ export async function onTriggerSample(t, value, onended, bank, resolveUrl) {
 
   const out = ac.createGain(); // we need a separate gain for the cutgroups because firefox...
   node.connect(out);
-  bufferSource.onended = function () {
+  onceEnded(bufferSource, function () {
     bufferSource.disconnect();
     vibratoOscillator?.stop();
     node.disconnect();
     out.disconnect();
     onended();
-  };
+  });
   let envEnd = holdEnd + release + 0.01;
   bufferSource.stop(envEnd);
   const stop = (endTime) => {

packages/superdough/superdough.mjs

@@ -274,7 +274,7 @@ export async function initAudioOnFirstClick(options) {
 }
 
 let controller;
-function getSuperdoughAudioController() {
+export function getSuperdoughAudioController() {
   if (controller == null) {
     controller = new SuperdoughAudioController(getAudioContext());
   }
@@ -287,11 +287,11 @@ export function connectToDestination(input, channels) {
 
 function getPhaser(time, end, frequency = 1, depth = 0.5, centerFrequency = 1000, sweep = 2000) {
   const ac = getAudioContext();
-  const lfoGain = getLfo(ac, time, end, { frequency, depth: sweep * 2 });
+  const lfo = getLfo(ac, time, end, { frequency, depth: sweep * 2 });
 
   //filters
-  const numStages = 2; //num of filters in series
-  let fOffset = 0;
+  const numStages = 1; //num of filters in series
+  let fOffset = 282; //for backward compat in #1800
   const filterChain = [];
   for (let i = 0; i < numStages; i++) {
     const filter = ac.createBiquadFilter();
@@ -300,14 +300,11 @@ function getPhaser(time, end, frequency = 1, depth = 0.5, centerFrequency = 1000
     filter.frequency.value = centerFrequency + fOffset;
     filter.Q.value = 2 - Math.min(Math.max(depth * 2, 0), 1.9);
 
-    lfoGain.connect(filter.detune);
+    lfo.connect(filter.detune);
     fOffset += 282;
-    if (i > 0) {
-      filterChain[i - 1].connect(filter);
-    }
     filterChain.push(filter);
   }
-  return filterChain[filterChain.length - 1];
+  return { filterChain, lfo };
 }
 
 function getFilterType(ftype) {
@@ -413,7 +410,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
     release = 0,
 
     //phaser
-    phaserrate: phaser,
+    phaserrate,
     phaserdepth = getDefaultValue('phaserdepth'),
     phasersweep,
     phasercenter,
@@ -451,6 +448,8 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
     compressorKnee,
     compressorAttack,
     compressorRelease,
+    transient,
+    transsustain,
   } = value;
 
   delaytime = delaytime ?? cycleToSeconds(delaysync, cps);
@@ -532,6 +531,23 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
   chain.push(sourceNode);
   stretch !== undefined && chain.push(getWorklet(ac, 'phase-vocoder-processor', { pitchFactor: stretch }));
 
+  transient !== undefined &&
+    chain.push(
+      getWorklet(
+        ac,
+        'transient-processor',
+        {},
+        {
+          processorOptions: {
+            attack: transient,
+            sustain: transsustain,
+            begin: t,
+            end: endWithRelease,
+          },
+        },
+      ),
+    );
+
   // gain stage
   chain.push(gainNode(gain));
 
@@ -560,10 +576,14 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
     };
     const lpParams = pickAndRename(value, lpMap);
     lpParams.type = 'lowpass';
-    let lp = () => createFilter(ac, t, end, lpParams, cps, cycle);
-    chain.push(lp());
+    const lp = () => createFilter(ac, t, end, lpParams, cps, cycle);
+    const { filter: lpf1, lfo: lfo1 } = lp();
+    chain.push(lpf1);
+    lfo1 && audioNodes.push(lfo1);
     if (ftype === '24db') {
-      chain.push(lp());
+      const { filter: lpf2, lfo: lfo2 } = lp();
+      chain.push(lpf2);
+      lfo2 && audioNodes.push(lfo2);
     }
   }
 
@@ -589,10 +609,14 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
     };
     const hpParams = pickAndRename(value, hpMap);
     hpParams.type = 'highpass';
-    let hp = () => createFilter(ac, t, end, hpParams, cps, cycle);
-    chain.push(hp());
+    const hp = () => createFilter(ac, t, end, hpParams, cps, cycle);
+    const { filter: hpf1, lfo: lfo1 } = hp();
+    chain.push(hpf1);
+    lfo1 && audioNodes.push(lfo1);
     if (ftype === '24db') {
-      chain.push(hp());
+      const { filter: hpf2, lfo: lfo2 } = hp();
+      chain.push(hpf2);
+      lfo2 && audioNodes.push(lfo2);
     }
   }
 
@@ -618,10 +642,14 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
     };
     const bpParams = pickAndRename(value, bpMap);
     bpParams.type = 'bandpass';
-    let bp = () => createFilter(ac, t, end, bpParams, cps, cycle);
-    chain.push(bp());
+    const bp = () => createFilter(ac, t, end, bpParams, cps, cycle);
+    const { filter: bpf1, lfo: lfo1 } = bp();
+    chain.push(bpf1);
+    lfo1 && audioNodes.push(lfo1);
     if (ftype === '24db') {
-      chain.push(bp());
+      const { filter: bpf2, lfo: lfo2 } = bp();
+      chain.push(bpf2);
+      lfo2 && audioNodes.push(lfo2);
     }
   }
 
@@ -684,9 +712,10 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
     chain.push(panner);
   }
   // phaser
-  if (phaser !== undefined && phaserdepth > 0) {
-    const phaserFX = getPhaser(t, endWithRelease, phaser, phaserdepth, phasercenter, phasersweep);
-    chain.push(phaserFX);
+  if (phaserrate !== undefined && phaserdepth > 0) {
+    const { filterChain, lfo } = getPhaser(t, endWithRelease, phaserrate, phaserdepth, phasercenter, phasersweep);
+    audioNodes.push(lfo);
+    chain.push(...filterChain);
   }
 
   // last gain

packages/superdough/synth.mjs

@@ -3,7 +3,6 @@ import { registerSound, soundMap } from './superdough.mjs';
 import { getAudioContext } from './audioContext.mjs';
 import {
   applyFM,
-  destroyAudioWorkletNode,
   gainNode,
   getADSRValues,
   getFrequencyFromValue,
@@ -13,6 +12,7 @@ import {
   getVibratoOscillator,
   getWorklet,
   noises,
+  releaseAudioNode,
   webAudioTimeout,
 } from './helpers.mjs';
 import { logger } from './logger.mjs';
@@ -192,8 +192,7 @@ export function registerSynthSounds() {
       let timeoutNode = webAudioTimeout(
         ac,
         () => {
-          destroyAudioWorkletNode(o);
-          envGain.disconnect();
+          releaseAudioNode(o);
           onended();
           fm?.stop();
           vibratoOscillator?.stop();
@@ -270,8 +269,7 @@ export function registerSynthSounds() {
       let timeoutNode = webAudioTimeout(
         ac,
         () => {
-          destroyAudioWorkletNode(o);
-          envGain.disconnect();
+          releaseAudioNode(o);
           onended();
         },
         begin,
@@ -344,9 +342,8 @@ export function registerSynthSounds() {
       let timeoutNode = webAudioTimeout(
         ac,
         () => {
-          destroyAudioWorkletNode(o);
-          destroyAudioWorkletNode(lfo);
-          envGain.disconnect();
+          releaseAudioNode(o);
+          releaseAudioNode(lfo);
           onended();
           fm?.stop();
           vibratoOscillator?.stop();

packages/superdough/wavetable.mjs

@@ -3,13 +3,13 @@ import { getBaseURL, getCommonSampleInfo } from './util.mjs';
 import {
   applyFM,
   applyParameterModulators,
-  destroyAudioWorkletNode,
   getADSRValues,
   getFrequencyFromValue,
   getParamADSR,
   getPitchEnvelope,
   getVibratoOscillator,
   getWorklet,
+  releaseAudioNode,
   webAudioTimeout,
 } from './helpers.mjs';
 import { logger } from './logger.mjs';
@@ -319,10 +319,9 @@ export async function onTriggerSynth(t, value, onended, tables, cps, frameLen) {
   const timeoutNode = webAudioTimeout(
     ac,
     () => {
-      destroyAudioWorkletNode(source);
+      releaseAudioNode(source);
       vibratoOscillator?.stop();
       fm?.stop();
-      node.disconnect();
       wtPosModulators?.disconnect();
       wtWarpModulators?.disconnect();
       onended();

packages/superdough/worklets.mjs

@@ -11,6 +11,9 @@ const PI = Math.PI;
 const TWO_PI = 2 * PI;
 const INVSR = 1 / sampleRate;
 
+const timeToCoeff = (t) => 1 - Math.exp(-INVSR / t);
+const dbToLin = (db) => Math.pow(10, db / 20);
+
 const clamp = (num, min, max) => Math.min(Math.max(num, min), max);
 const mod = (n, m) => ((n % m) + m) % m;
 const lerp = (a, b, n) => n * (b - a) + a;
@@ -508,13 +511,14 @@ class SuperSawOscillatorProcessor extends AudioWorkletProcessor {
     ];
   }
   process(_input, outputs, params) {
-    if (currentTime <= params.begin[0]) {
-      return true;
-    }
     if (currentTime >= params.end[0]) {
-      // this.port.postMessage({ type: 'onended' });
+      // should terminate
       return false;
     }
+    if (currentTime <= params.begin[0]) {
+      // keep alive
+      return true;
+    }
     const output = outputs[0];
     const voices = params.voices[0]; // k-rate
     for (let i = 0; i < output[0].length; i++) {
@@ -1383,3 +1387,82 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
 }
 
 registerProcessor('wavetable-oscillator-processor', WavetableOscillatorProcessor);
+
+class TransientProcessor extends AudioWorkletProcessor {
+  static get parameterDescriptors() {
+    return [];
+  }
+
+  constructor(options) {
+    super();
+    this.gainCoeff = timeToCoeff(0.2);
+    this.avgGain = 1;
+    let {
+      attackTime = 0.003,
+      sustainTime = 0.08,
+      attack = 0,
+      sustain = 0,
+      sensitivity = 0.1,
+      mix = 1,
+      begin = 0,
+      end = 0,
+    } = options.processorOptions;
+    attackTime = clamp(attackTime, 0.0005, 0.05);
+    sustainTime = clamp(sustainTime, 0.01, 0.5);
+    this.attackCoeff = timeToCoeff(attackTime);
+    this.sustainCoeff = timeToCoeff(sustainTime);
+    this.attackAmt = clamp(attack, -1, 1);
+    this.sustainAmt = clamp(sustain, -1, 1);
+    this.scaling = 0.5 + 5 * clamp(sensitivity, 0, 1);
+    this.mix = clamp(mix, 0, 1);
+    this.begin = begin;
+    this.end = end;
+    this.attackEnv = new Float32Array(2); // assume stereo
+    this.sustainEnv = new Float32Array(2);
+  }
+
+  process(inputs, outputs, _params) {
+    const input = inputs[0];
+    const output = outputs[0];
+    if (currentTime >= this.end) {
+      return false;
+    }
+    if (currentTime <= this.begin) {
+      return true;
+    }
+    const channels = input.length;
+    if (channels > this.attackEnv.length) {
+      this.attackEnv = new Float32Array(channels);
+      this.sustainEnv = new Float32Array(channels);
+    }
+    let avgGain = this.avgGain;
+    for (let ch = 0; ch < channels; ch++) {
+      let attEnv = this.attackEnv[ch];
+      let susEnv = this.sustainEnv[ch];
+      for (let n = 0; n < blockSize; n++) {
+        const sample = input[ch][n];
+        const x = Math.abs(sample);
+        attEnv = lerp(attEnv, x, this.attackCoeff);
+        susEnv = lerp(susEnv, x, this.sustainCoeff);
+        const peakiness = clamp((this.scaling * (attEnv - susEnv)) / (susEnv + 1e-6), -1.5, 1.5);
+        const attScale = peakiness > 0 ? peakiness : 0;
+        const susScale = peakiness < 0 ? -peakiness : 0;
+        const attackGain = dbToLin(this.attackAmt * attScale * 18);
+        const sustainGain = dbToLin(this.sustainAmt * susScale * 36);
+        const gain = clamp(attackGain * sustainGain, 0, 8);
+        avgGain = lerp(avgGain, gain, this.gainCoeff);
+        const makeup = avgGain > 1e-3 ? 1 / avgGain : 1;
+        const wet = sample * gain * makeup;
+        let y = lerp(sample, wet, this.mix);
+        y /= 1 + Math.abs(y); // soft clip
+        output[ch][n] = y;
+      }
+      this.attackEnv[ch] = attEnv;
+      this.sustainEnv[ch] = susEnv;
+    }
+    this.avgGain = avgGain;
+    return true;
+  }
+}
+
+registerProcessor('transient-processor', TransientProcessor);

packages/superdough/zzfx.mjs

@@ -3,6 +3,7 @@ import { midiToFreq, noteToMidi } from './util.mjs';
 import { registerSound } from './superdough.mjs';
 import { getAudioContext } from './audioContext.mjs';
 import { buildSamples } from './zzfx_fork.mjs';
+import { onceEnded, releaseAudioNode } from './helpers.mjs';
 
 export const getZZFX = (value, t) => {
   let {
@@ -83,10 +84,10 @@ export function registerZZFXSounds() {
       wave,
       (t, value, onended) => {
         const { node: o } = getZZFX({ s: wave, ...value }, t);
-        o.onended = () => {
-          o.disconnect();
+        onceEnded(o, () => {
+          releaseAudioNode(o);
           onended();
-        };
+        });
         return {
           node: o,
           stop: () => {},

test/__snapshots__/examples.test.mjs.snap

@@ -4043,6 +4043,70 @@ exports[`runs examples > example "filter" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "filterHaps" example index 0 1`] = `
+[
+  "[ 1/8 → 1/4 | s:bd velocity:0.6852155700325966 ]",
+  "[ 1/4 → 3/8 | s:bd velocity:0.36975969187915325 ]",
+  "[ 3/8 → 1/2 | s:bd velocity:0.40139251574873924 ]",
+  "[ 1/1 → 9/8 | s:bd velocity:0.5195421651005745 ]",
+  "[ 9/8 → 5/4 | s:bd velocity:0.6724895145744085 ]",
+  "[ 5/4 → 11/8 | s:bd velocity:0.7287282031029463 ]",
+  "[ 3/2 → 13/8 | s:bd velocity:0.6084080748260021 ]",
+  "[ 2/1 → 17/8 | s:bd velocity:0.9595271199941635 ]",
+  "[ 17/8 → 9/4 | s:bd velocity:0.9033902939409018 ]",
+  "[ 9/4 → 19/8 | s:bd velocity:0.34548251144587994 ]",
+  "[ 19/8 → 5/2 | s:bd velocity:0.8365066405385733 ]",
+  "[ 3/1 → 25/8 | s:bd velocity:0.21728911064565182 ]",
+  "[ 25/8 → 13/4 | s:bd velocity:0.34324387833476067 ]",
+  "[ 13/4 → 27/8 | s:bd velocity:0.9923650715500116 ]",
+  "[ 27/8 → 7/2 | s:bd velocity:0.40869180113077164 ]",
+  "[ 29/8 → 15/4 | s:bd velocity:0.9391485787928104 ]",
+  "[ 15/4 → 31/8 | s:bd velocity:0.8121673222631216 ]",
+]
+`;
+
+exports[`runs examples > example "filterValues" example index 0 1`] = `
+[
+  "[ 0/1 → 1/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 1/4 → 1/2 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 1/2 → 3/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 3/4 → 1/1 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 1/1 → 5/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 5/4 → 3/2 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 3/2 → 7/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 7/4 → 2/1 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 2/1 → 9/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 9/4 → 5/2 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 5/2 → 11/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 11/4 → 3/1 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 3/1 → 13/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 13/4 → 7/2 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 7/2 → 15/4 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+  "[ 15/4 → 4/1 | s:saw note:G#1 cutoff:80 lpenv:4 orbit:2 ]",
+]
+`;
+
+exports[`runs examples > example "filterWhen" example index 0 1`] = `
+[
+  "[ 0/1 → 1/4 | s:bd ]",
+  "[ 1/4 → 1/2 | s:bd ]",
+  "[ 1/2 → 3/4 | s:bd ]",
+  "[ 3/4 → 1/1 | s:bd ]",
+  "[ 1/1 → 5/4 | s:bd ]",
+  "[ 5/4 → 3/2 | s:bd ]",
+  "[ 3/2 → 7/4 | s:bd ]",
+  "[ 7/4 → 2/1 | s:bd ]",
+  "[ 2/1 → 9/4 | s:bd ]",
+  "[ 9/4 → 5/2 | s:bd ]",
+  "[ 5/2 → 11/4 | s:bd ]",
+  "[ 11/4 → 3/1 | s:bd ]",
+  "[ 3/1 → 13/4 | s:bd ]",
+  "[ 13/4 → 7/2 | s:bd ]",
+  "[ 7/2 → 15/4 | s:bd ]",
+  "[ 15/4 → 4/1 | s:bd ]",
+]
+`;
+
 exports[`runs examples > example "firstOf" example index 0 1`] = `
 [
   "[ 0/1 → 1/4 | note:g3 ]",
@@ -4092,35 +4156,6 @@ exports[`runs examples > example "floor" example index 0 1`] = `
 ]
 `;
 
-exports[`runs examples > example "fm" example index 0 1`] = `
-[
-  "[ 0/1 → 1/6 | note:c fmi:0 ]",
-  "[ 1/6 → 1/3 | note:e fmi:0 ]",
-  "[ 1/3 → 1/2 | note:g fmi:0 ]",
-  "[ 1/2 → 2/3 | note:b fmi:0 ]",
-  "[ 2/3 → 5/6 | note:g fmi:0 ]",
-  "[ 5/6 → 1/1 | note:e fmi:0 ]",
-  "[ 1/1 → 7/6 | note:c fmi:1 ]",
-  "[ 7/6 → 4/3 | note:e fmi:1 ]",
-  "[ 4/3 → 3/2 | note:g fmi:1 ]",
-  "[ 3/2 → 5/3 | note:b fmi:1 ]",
-  "[ 5/3 → 11/6 | note:g fmi:1 ]",
-  "[ 11/6 → 2/1 | note:e fmi:1 ]",
-  "[ 2/1 → 13/6 | note:c fmi:2 ]",
-  "[ 13/6 → 7/3 | note:e fmi:2 ]",
-  "[ 7/3 → 5/2 | note:g fmi:2 ]",
-  "[ 5/2 → 8/3 | note:b fmi:2 ]",
-  "[ 8/3 → 17/6 | note:g fmi:2 ]",
-  "[ 17/6 → 3/1 | note:e fmi:2 ]",
-  "[ 3/1 → 19/6 | note:c fmi:8 ]",
-  "[ 19/6 → 10/3 | note:e fmi:8 ]",
-  "[ 10/3 → 7/2 | note:g fmi:8 ]",
-  "[ 7/2 → 11/3 | note:b fmi:8 ]",
-  "[ 11/3 → 23/6 | note:g fmi:8 ]",
-  "[ 23/6 → 4/1 | note:e fmi:8 ]",
-]
-`;
-
 exports[`runs examples > example "fmattack" example index 0 1`] = `
 [
   "[ 0/1 → 1/6 | note:c fmi:4 fmattack:0 ]",
@@ -4237,6 +4272,72 @@ exports[`runs examples > example "fmh" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "fmi" example index 0 1`] = `
+[
+  "[ 0/1 → 1/6 | note:c fmi:0 ]",
+  "[ 1/6 → 1/3 | note:e fmi:0 ]",
+  "[ 1/3 → 1/2 | note:g fmi:0 ]",
+  "[ 1/2 → 2/3 | note:b fmi:0 ]",
+  "[ 2/3 → 5/6 | note:g fmi:0 ]",
+  "[ 5/6 → 1/1 | note:e fmi:0 ]",
+  "[ 1/1 → 7/6 | note:c fmi:1 ]",
+  "[ 7/6 → 4/3 | note:e fmi:1 ]",
+  "[ 4/3 → 3/2 | note:g fmi:1 ]",
+  "[ 3/2 → 5/3 | note:b fmi:1 ]",
+  "[ 5/3 → 11/6 | note:g fmi:1 ]",
+  "[ 11/6 → 2/1 | note:e fmi:1 ]",
+  "[ 2/1 → 13/6 | note:c fmi:2 ]",
+  "[ 13/6 → 7/3 | note:e fmi:2 ]",
+  "[ 7/3 → 5/2 | note:g fmi:2 ]",
+  "[ 5/2 → 8/3 | note:b fmi:2 ]",
+  "[ 8/3 → 17/6 | note:g fmi:2 ]",
+  "[ 17/6 → 3/1 | note:e fmi:2 ]",
+  "[ 3/1 → 19/6 | note:c fmi:8 ]",
+  "[ 19/6 → 10/3 | note:e fmi:8 ]",
+  "[ 10/3 → 7/2 | note:g fmi:8 ]",
+  "[ 7/2 → 11/3 | note:b fmi:8 ]",
+  "[ 11/3 → 23/6 | note:g fmi:8 ]",
+  "[ 23/6 → 4/1 | note:e fmi:8 ]",
+]
+`;
+
+exports[`runs examples > example "fmi" example index 1 1`] = `
+[
+  "[ 0/1 → 1/8 | s:sine note:F1 fmi:4 fmi2:0 fmi3:0 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 1/8 → 1/4 | s:sine note:F1 fmi:4 fmi2:2.7408622801303864 fmi3:0.125 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 1/4 → 3/8 | s:sine note:F1 fmi:4 fmi2:1.479038767516613 fmi3:0.25 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 3/8 → 1/2 | s:sine note:F1 fmi:4 fmi2:1.605570062994957 fmi3:0.375 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 1/2 → 5/8 | s:sine note:F1 fmi:4 fmi2:1.041922464966774 fmi3:0.5 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 5/8 → 3/4 | s:sine note:F1 fmi:4 fmi2:0.5425434708595276 fmi3:0.625 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 3/4 → 7/8 | s:sine note:F1 fmi:4 fmi2:0.7833059206604958 fmi3:0.75 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 7/8 → 1/1 | s:sine note:F1 fmi:4 fmi2:1.590524323284626 fmi3:0.875 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 1/1 → 9/8 | s:sine note:F1 fmi:4 fmi2:2.078168660402298 fmi3:1 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 9/8 → 5/4 | s:sine note:F1 fmi:4 fmi2:2.689958058297634 fmi3:1.125 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 5/4 → 11/8 | s:sine note:F1 fmi:4 fmi2:2.914912812411785 fmi3:1.25 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 11/8 → 3/2 | s:sine note:F1 fmi:4 fmi2:0.7312150076031685 fmi3:1.375 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 3/2 → 13/8 | s:sine note:F1 fmi:4 fmi2:2.4336322993040085 fmi3:1.5 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 13/8 → 7/4 | s:sine note:F1 fmi:4 fmi2:1.987018845975399 fmi3:1.625 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 7/4 → 15/8 | s:sine note:F1 fmi:4 fmi2:0.8189515843987465 fmi3:1.75 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 15/8 → 2/1 | s:sine note:F1 fmi:4 fmi2:2.3782287165522575 fmi3:1.875 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 2/1 → 17/8 | s:sine note:F1 fmi:4 fmi2:3.838108479976654 fmi3:2 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 17/8 → 9/4 | s:sine note:F1 fmi:4 fmi2:3.613561175763607 fmi3:2.125 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 9/4 → 19/8 | s:sine note:F1 fmi:4 fmi2:1.3819300457835197 fmi3:2.25 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 19/8 → 5/2 | s:sine note:F1 fmi:4 fmi2:3.346026562154293 fmi3:2.375 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 5/2 → 21/8 | s:sine note:F1 fmi:4 fmi2:1.8344642966985703 fmi3:2.5 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 21/8 → 11/4 | s:sine note:F1 fmi:4 fmi2:0.6407739371061325 fmi3:2.625 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 11/4 → 23/8 | s:sine note:F1 fmi:4 fmi2:2.5329310819506645 fmi3:2.75 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 23/8 → 3/1 | s:sine note:F1 fmi:4 fmi2:0.06501668691635132 fmi3:2.875 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 3/1 → 25/8 | s:sine note:F1 fmi:4 fmi2:0.8691564425826073 fmi3:3 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 25/8 → 13/4 | s:sine note:F1 fmi:4 fmi2:1.3729755133390427 fmi3:3.125 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 13/4 → 27/8 | s:sine note:F1 fmi:4 fmi2:3.9694602862000465 fmi3:3.25 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 27/8 → 7/2 | s:sine note:F1 fmi:4 fmi2:1.6347672045230865 fmi3:3.375 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 7/2 → 29/8 | s:sine note:F1 fmi:4 fmi2:1.639795258641243 fmi3:3.5 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 29/8 → 15/4 | s:sine note:F1 fmi:4 fmi2:3.7565943151712418 fmi3:3.625 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 15/4 → 31/8 | s:sine note:F1 fmi:4 fmi2:3.2486692890524864 fmi3:3.75 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+  "[ 31/8 → 4/1 | s:sine note:F1 fmi:4 fmi2:2.9446661546826363 fmi3:3.875 fmh:1.06 fmh2:10 fmh3:0.1 ]",
+]
+`;
+
 exports[`runs examples > example "fmsustain" example index 0 1`] = `
 [
   "[ 0/1 → 1/6 | note:c fmi:4 fmdecay:0.1 fmsustain:1 ]",
@@ -9064,6 +9165,43 @@ exports[`runs examples > example "ratio" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "register" example index 0 1`] = `
+[
+  "[ 0/1 → 1/8 | s:saw velocity:0 cutoff:0 ]",
+  "[ 1/8 → 1/4 | s:saw velocity:0.6852155700325966 cutoff:548.1724560260773 ]",
+  "[ 1/4 → 3/8 | s:saw velocity:0.36975969187915325 cutoff:295.8077535033226 ]",
+  "[ 3/8 → 1/2 | s:saw velocity:0.40139251574873924 cutoff:321.1140125989914 ]",
+  "[ 1/2 → 5/8 | s:saw velocity:0.2604806162416935 cutoff:208.3844929933548 ]",
+  "[ 5/8 → 3/4 | s:saw velocity:0.1356358677148819 cutoff:108.50869417190552 ]",
+  "[ 3/4 → 7/8 | s:saw velocity:0.19582648016512394 cutoff:156.66118413209915 ]",
+  "[ 7/8 → 1/1 | s:saw velocity:0.3976310808211565 cutoff:318.1048646569252 ]",
+  "[ 1/1 → 9/8 | s:saw velocity:0.5195421651005745 cutoff:415.6337320804596 ]",
+  "[ 9/8 → 5/4 | s:saw velocity:0.6724895145744085 cutoff:537.9916116595268 ]",
+  "[ 5/4 → 11/8 | s:saw velocity:0.7287282031029463 cutoff:582.982562482357 ]",
+  "[ 11/8 → 3/2 | s:saw velocity:0.18280375190079212 cutoff:146.2430015206337 ]",
+  "[ 3/2 → 13/8 | s:saw velocity:0.6084080748260021 cutoff:486.7264598608017 ]",
+  "[ 13/8 → 7/4 | s:saw velocity:0.49675471149384975 cutoff:397.4037691950798 ]",
+  "[ 7/4 → 15/8 | s:saw velocity:0.20473789609968662 cutoff:163.7903168797493 ]",
+  "[ 15/8 → 2/1 | s:saw velocity:0.5945571791380644 cutoff:475.6457433104515 ]",
+  "[ 2/1 → 17/8 | s:saw velocity:0.9595271199941635 cutoff:767.6216959953308 ]",
+  "[ 17/8 → 9/4 | s:saw velocity:0.9033902939409018 cutoff:722.7122351527214 ]",
+  "[ 9/4 → 19/8 | s:saw velocity:0.34548251144587994 cutoff:276.38600915670395 ]",
+  "[ 19/8 → 5/2 | s:saw velocity:0.8365066405385733 cutoff:669.2053124308586 ]",
+  "[ 5/2 → 21/8 | s:saw velocity:0.45861607417464256 cutoff:366.89285933971405 ]",
+  "[ 21/8 → 11/4 | s:saw velocity:0.16019348427653313 cutoff:128.1547874212265 ]",
+  "[ 11/4 → 23/8 | s:saw velocity:0.6332327704876661 cutoff:506.5862163901329 ]",
+  "[ 23/8 → 3/1 | s:saw velocity:0.01625417172908783 cutoff:13.003337383270264 ]",
+  "[ 3/1 → 25/8 | s:saw velocity:0.21728911064565182 cutoff:173.83128851652145 ]",
+  "[ 25/8 → 13/4 | s:saw velocity:0.34324387833476067 cutoff:274.59510266780853 ]",
+  "[ 13/4 → 27/8 | s:saw velocity:0.9923650715500116 cutoff:793.8920572400093 ]",
+  "[ 27/8 → 7/2 | s:saw velocity:0.40869180113077164 cutoff:326.9534409046173 ]",
+  "[ 7/2 → 29/8 | s:saw velocity:0.40994881466031075 cutoff:327.9590517282486 ]",
+  "[ 29/8 → 15/4 | s:saw velocity:0.9391485787928104 cutoff:751.3188630342484 ]",
+  "[ 15/4 → 31/8 | s:saw velocity:0.8121673222631216 cutoff:649.7338578104973 ]",
+  "[ 31/8 → 4/1 | s:saw velocity:0.7361665386706591 cutoff:588.9332309365273 ]",
+]
+`;
+
 exports[`runs examples > example "release" example index 0 1`] = `
 [
   "[ 0/1 → 1/4 | note:c3 release:0 ]",
@@ -9256,6 +9394,19 @@ exports[`runs examples > example "rev" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "revv" example index 0 1`] = `
+[
+  "[ 0/1 → 1/2 | note:g ]",
+  "[ 1/2 → 1/1 | note:e ]",
+  "[ 1/1 → 3/2 | note:d ]",
+  "[ 3/2 → 2/1 | note:c ]",
+  "[ 2/1 → 5/2 | note:g ]",
+  "[ 5/2 → 3/1 | note:e ]",
+  "[ 3/1 → 7/2 | note:d ]",
+  "[ 7/2 → 4/1 | note:c ]",
+]
+`;
+
 exports[`runs examples > example "ribbon" example index 0 1`] = `
 [
   "[ 0/1 → 1/1 | note:d ]",
@@ -9672,42 +9823,6 @@ exports[`runs examples > example "samples" example index 1 1`] = `
 ]
 `;
 
-exports[`runs examples > example "samples" example index 2 1`] = `
-[
-  "[ 0/1 → 1/2 | s:noise ]",
-  "[ 1/2 → 3/4 | s:chimp n:0 ]",
-  "[ 3/4 → 1/1 | s:chimp n:0 ]",
-  "[ 1/1 → 3/2 | s:noise ]",
-  "[ 3/2 → 2/1 | s:chimp n:1 ]",
-  "[ 2/1 → 5/2 | s:noise ]",
-  "[ 5/2 → 11/4 | s:chimp n:0 ]",
-  "[ 11/4 → 3/1 | s:chimp n:0 ]",
-  "[ 3/1 → 7/2 | s:noise ]",
-  "[ 7/2 → 4/1 | s:chimp n:1 ]",
-]
-`;
-
-exports[`runs examples > example "samples" example index 3 1`] = `
-[
-  "[ 0/1 → 1/4 | s:chocolat ]",
-  "[ 1/4 → 1/2 | s:chocolat ]",
-  "[ 1/2 → 3/4 | s:chocolat ]",
-  "[ 3/4 → 1/1 | s:chocolat ]",
-  "[ 1/1 → 5/4 | s:chocolat ]",
-  "[ 5/4 → 3/2 | s:chocolat ]",
-  "[ 3/2 → 7/4 | s:chocolat ]",
-  "[ 7/4 → 2/1 | s:chocolat ]",
-  "[ 2/1 → 9/4 | s:chocolat ]",
-  "[ 9/4 → 5/2 | s:chocolat ]",
-  "[ 5/2 → 11/4 | s:chocolat ]",
-  "[ 11/4 → 3/1 | s:chocolat ]",
-  "[ 3/1 → 13/4 | s:chocolat ]",
-  "[ 13/4 → 7/2 | s:chocolat ]",
-  "[ 7/2 → 15/4 | s:chocolat ]",
-  "[ 15/4 → 4/1 | s:chocolat ]",
-]
-`;
-
 exports[`runs examples > example "saw" example index 0 1`] = `
 [
   "[ 0/1 → 1/8 | note:c3 clip:0 ]",
@@ -11712,6 +11827,75 @@ exports[`runs examples > example "sysexid" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "tag" example index 0 1`] = `
+[
+  "[ 0/1 → 1/16 | s:square note:F1 cutoff:40 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 1/16 → 1/8 | s:square note:F1 cutoff:41.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 1/8 → 3/16 | s:square note:F1 cutoff:42.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 3/16 → 1/4 | s:square note:F1 cutoff:43.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 1/4 → 5/16 | s:square note:F1 cutoff:45 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 5/16 → 3/8 | s:square note:F1 cutoff:46.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 3/8 → 7/16 | s:square note:F1 cutoff:47.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 7/16 → 1/2 | s:square note:F1 cutoff:48.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 1/2 → 9/16 | s:square note:F1 cutoff:50 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 9/16 → 5/8 | s:square note:F1 cutoff:51.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 5/8 → 11/16 | s:square note:F1 cutoff:52.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 11/16 → 3/4 | s:square note:F1 cutoff:53.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 3/4 → 13/16 | s:square note:F1 cutoff:55 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 13/16 → 7/8 | s:square note:F1 cutoff:56.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 7/8 → 15/16 | s:square note:F1 cutoff:57.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 15/16 → 1/1 | s:square note:F1 cutoff:58.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 1/1 → 17/16 | s:saw note:F2 cutoff:60 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 17/16 → 9/8 | s:saw note:F2 cutoff:61.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 9/8 → 19/16 | s:saw note:F2 cutoff:62.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 19/16 → 5/4 | s:saw note:F2 cutoff:63.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 5/4 → 21/16 | s:saw note:F2 cutoff:65 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 21/16 → 11/8 | s:saw note:F2 cutoff:66.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 11/8 → 23/16 | s:saw note:F2 cutoff:67.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 23/16 → 3/2 | s:saw note:F2 cutoff:68.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 3/2 → 25/16 | s:saw note:F2 cutoff:70 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 25/16 → 13/8 | s:saw note:F2 cutoff:71.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 13/8 → 27/16 | s:saw note:F2 cutoff:72.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 27/16 → 7/4 | s:saw note:F2 cutoff:73.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 7/4 → 29/16 | s:saw note:F2 cutoff:75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 29/16 → 15/8 | s:saw note:F2 cutoff:76.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 15/8 → 31/16 | s:saw note:F2 cutoff:77.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 31/16 → 2/1 | s:saw note:F2 cutoff:78.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 2/1 → 33/16 | s:saw note:F1 cutoff:80 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 33/16 → 17/8 | s:saw note:F1 cutoff:78.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 17/8 → 35/16 | s:saw note:F1 cutoff:77.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 35/16 → 9/4 | s:saw note:F1 cutoff:76.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 9/4 → 37/16 | s:saw note:F1 cutoff:75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 37/16 → 19/8 | s:saw note:F1 cutoff:73.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 19/8 → 39/16 | s:saw note:F1 cutoff:72.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 39/16 → 5/2 | s:saw note:F1 cutoff:71.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 5/2 → 41/16 | s:saw note:F1 cutoff:70 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 41/16 → 21/8 | s:saw note:F1 cutoff:68.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 21/8 → 43/16 | s:saw note:F1 cutoff:67.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 43/16 → 11/4 | s:saw note:F1 cutoff:66.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 11/4 → 45/16 | s:saw note:F1 cutoff:65 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 45/16 → 23/8 | s:saw note:F1 cutoff:63.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 23/8 → 47/16 | s:saw note:F1 cutoff:62.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 47/16 → 3/1 | s:saw note:F1 cutoff:61.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 3/1 → 49/16 | s:square note:F1 cutoff:60 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 49/16 → 25/8 | s:square note:F1 cutoff:58.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 25/8 → 51/16 | s:square note:F1 cutoff:57.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 51/16 → 13/4 | s:square note:F1 cutoff:56.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 13/4 → 53/16 | s:square note:F1 cutoff:55 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 53/16 → 27/8 | s:square note:F1 cutoff:53.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 27/8 → 55/16 | s:square note:F1 cutoff:52.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 55/16 → 7/2 | s:square note:F1 cutoff:51.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 7/2 → 57/16 | s:square note:F1 cutoff:50 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 57/16 → 29/8 | s:square note:F1 cutoff:48.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 29/8 → 59/16 | s:square note:F1 cutoff:47.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 59/16 → 15/4 | s:square note:F1 cutoff:46.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 15/4 → 61/16 | s:square note:F1 cutoff:45 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 61/16 → 31/8 | s:square note:F1 cutoff:43.75 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 31/8 → 63/16 | s:square note:F1 cutoff:42.5 lpenv:5 resonance:4 lpdecay:0.15 ]",
+  "[ 63/16 → 4/1 | s:square note:F1 cutoff:41.25 lpenv:5 resonance:4 lpdecay:0.15 ]",
+]
+`;
+
 exports[`runs examples > example "take" example index 0 1`] = `
 [
   "[ 0/1 → 1/2 | s:bd ]",
@@ -11824,6 +12008,84 @@ exports[`runs examples > example "tour" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "transient" example index 0 1`] = `
+[
+  "[ 0/1 → 1/1 | s:bd transient:-1 ]",
+  "[ 1/1 → 2/1 | s:bd transient:-0.5 ]",
+  "[ 2/1 → 3/1 | s:bd transient:0 ]",
+  "[ 3/1 → 4/1 | s:bd transient:0.5 ]",
+]
+`;
+
+exports[`runs examples > example "transient" example index 1 1`] = `
+[
+  "[ 0/1 → 1/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 1/16 → 1/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 1/8 → 3/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 3/16 → 1/4 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 1/4 → 5/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 5/16 → 3/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 3/8 → 7/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 7/16 → 1/2 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 1/2 → 9/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 9/16 → 5/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 5/8 → 11/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 11/16 → 3/4 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 3/4 → 13/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 13/16 → 7/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 7/8 → 15/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 15/16 → 1/1 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 1/1 → 17/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 17/16 → 9/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 9/8 → 19/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 19/16 → 5/4 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 5/4 → 21/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 21/16 → 11/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 11/8 → 23/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 23/16 → 3/2 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 3/2 → 25/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 25/16 → 13/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 13/8 → 27/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 27/16 → 7/4 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 7/4 → 29/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 29/16 → 15/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 15/8 → 31/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 31/16 → 2/1 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 2/1 → 33/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 33/16 → 17/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 17/8 → 35/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 35/16 → 9/4 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 9/4 → 37/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 37/16 → 19/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 19/8 → 39/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 39/16 → 5/2 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 5/2 → 41/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 41/16 → 21/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 21/8 → 43/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 43/16 → 11/4 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 11/4 → 45/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 45/16 → 23/8 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 23/8 → 47/16 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 47/16 → 3/1 | s:hh bank:tr909 transient:-1 transsustain:1 ]",
+  "[ 3/1 → 49/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 49/16 → 25/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 25/8 → 51/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 51/16 → 13/4 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 13/4 → 53/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 53/16 → 27/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 27/8 → 55/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 55/16 → 7/2 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 7/2 → 57/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 57/16 → 29/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 29/8 → 59/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 59/16 → 15/4 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 15/4 → 61/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 61/16 → 31/8 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 31/8 → 63/16 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+  "[ 63/16 → 4/1 | s:hh bank:tr909 transient:1 transsustain:-1 ]",
+]
+`;
+
 exports[`runs examples > example "transpose" example index 0 1`] = `
 [
   "[ 0/1 → 1/4 | note:C2 ]",