diff --git a/packages/core/controls.mjs b/packages/core/controls.mjs
index 2364cd994..b99f83564 100644
--- a/packages/core/controls.mjs
+++ b/packages/core/controls.mjs
@@ -431,16 +431,37 @@ export const { crush } = registerControl('crush');
 export const { coarse } = registerControl('coarse');
 
 /**
- * modulate the output gain of a sound with a continuous wave
+ * modulate the amplitude of a sound with a continuous waveform
  *
- * @name gainmod
- * @param {number | Pattern} factor 1 for original 2 for half, 3 for a third and so on.
+ * @name am
+ * @param {number | Pattern} speed modulation speed in cycles
  * @example
- * s("triangle").gainmod("2:1:0")
+ * s("triangle").am("2").amshape("<tri saw ramp square>").amdepth(.5)
  *
  */
-export const { gainmod } = registerControl('gainmod');
+export const { am } = registerControl(['am', 'amdepth', 'amshape']);
 
+/**
+ * depth of amplitude modulation
+ *
+ * @name amdepth
+ * @param {number | Pattern} depth
+ * @example
+ * s("triangle").am(1).amdepth("1")
+ *
+ */
+export const { amdepth } = registerControl('amdepth');
+
+/**
+ * shape of amplitude modulation
+ *
+ * @name amshape
+ * @param {number | Pattern} shape tri | square | sine | saw | ramp
+ * @example
+ * note("{f g c d}%16").am(4).amshape("ramp").s("sawtooth")
+ *
+ */
+export const { amshape } = registerControl('amshape');
 /**
  * Allows you to set the output channels on the interface
  *
diff --git a/packages/superdough/superdough.mjs b/packages/superdough/superdough.mjs
index b6e06e635..13c138dcc 100644
--- a/packages/superdough/superdough.mjs
+++ b/packages/superdough/superdough.mjs
@@ -324,7 +324,7 @@ export const superdough = async (value, t, hapDuration, cps, cycle) => {
     phasercenter,
     //
     coarse,
-    gainmod,
+    am,
     crush,
     shape,
 
@@ -474,11 +474,12 @@ export const superdough = async (value, t, hapDuration, cps, cycle) => {
   crush !== undefined && chain.push(getWorklet(ac, 'crush-processor', { crush }));
   shape !== undefined && chain.push(getWorklet(ac, 'shape-processor', { shape, postgain: shapevol }));
   distort !== undefined && chain.push(getWorklet(ac, 'distort-processor', { distort, postgain: distortvol }));
-  gainmod !== undefined &&
+  am !== undefined &&
     chain.push(
-      getWorklet(ac, 'gainmod-processor', {
-        speed: gainmod,
-        // depth: amdepth, shape: amshape,
+      getWorklet(ac, 'am-processor', {
+        speed: am,
+        depth: amdepth,
+        // shape: amshape,
 
         cps,
         cycle,
diff --git a/packages/superdough/worklets.mjs b/packages/superdough/worklets.mjs
index 2f1375f01..b3e32576a 100644
--- a/packages/superdough/worklets.mjs
+++ b/packages/superdough/worklets.mjs
@@ -128,14 +128,14 @@ class CrushProcessor extends AudioWorkletProcessor {
 }
 registerProcessor('crush-processor', CrushProcessor);
 
-class GainModProcessor extends AudioWorkletProcessor {
+class AMProcessor extends AudioWorkletProcessor {
   static get parameterDescriptors() {
     return [
       { name: 'cps', defaultValue: 0.5 },
       { name: 'speed', defaultValue: 0.5 },
       { name: 'cycle', defaultValue: 0 },
       // { name: 'shape', defaultValue: 'tri' },
-      // { name: 'depth', defaultValue: 1 },
+      { name: 'depth', defaultValue: 1 },
     ];
   }
 
@@ -155,6 +155,7 @@ class GainModProcessor extends AudioWorkletProcessor {
     const speed = parameters['speed'][0];
     const cps = parameters['cps'][0];
     const cycle = parameters['cycle'][0];
+    const depth = clamp(parameters['depth'][0], 0, 1);
 
     const blockSize = 128;
     const frequency = speed * cps;
@@ -169,7 +170,7 @@ class GainModProcessor extends AudioWorkletProcessor {
     const dt = frequency / sampleRate;
     for (let n = 0; n < blockSize; n++) {
       for (let i = 0; i < input.length; i++) {
-        const modval = waveshapes.tri(this.phase, 0.99);
+        const modval = waveshapes.tri(this.phase, 0.99) * depth + (1 - depth);
 
         output[i][n] = input[i][n] * modval;
       }
@@ -178,7 +179,7 @@ class GainModProcessor extends AudioWorkletProcessor {
     return true;
   }
 }
-registerProcessor('gainmod-processor', GainModProcessor);
+registerProcessor('am-processor', AMProcessor);
 
 class ShapeProcessor extends AudioWorkletProcessor {
   static get parameterDescriptors() {