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119 lines
3.4 KiB
Plaintext
119 lines
3.4 KiB
Plaintext
---
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title: Xenharmonic Functions
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layout: ../../layouts/MainLayout.astro
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---
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import { MiniRepl } from '../../docs/MiniRepl';
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import { JsDoc } from '../../docs/JsDoc';
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# Xenharmonic Functions (experimental)
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{/* TODO expand explanation of xenharmony */}
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These functions allow the use of scales other than your typical chromatic 12 based ones.
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### tune(scale)
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{/* TODO (maybe): combine jsdoc things in tune.mjs with here */}
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<JsDoc client:idle name="tune" h={0} />
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Here's an example of how to configure a basic hexany scale:
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<MiniRepl client:idle tune={`i("0 1 2 3 4 5").tune("hexany15").mul("220").freq()`} />
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Try other scales like `hexany1`, `iraq`, `gumbeng`, `gunkali`, or `tranh3`
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For a full list of available scales from tunejs, see http://abbernie.github.io/tune/scales.html
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You can set your root to be a particular note with `getFreq`
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<MiniRepl
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client:idle
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tune={`i("4 8 9 10 - - 5 7 9 11 - -").tune("tranh3")
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.mul(getFreq('c3'))
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.freq().clip(.5).room(1)`}
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/>
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Some tunings become more pronounced with a longer reverb decay:
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<MiniRepl
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client:idle
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tune={`i("<[5 6 8 10] - [5 7 9 12] -> -").tune("gumbeng")
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.mul(getFreq('c3'))
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.freq().clip(.8).room("3:10").rdim(10000).rfade(5)`}
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/>
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Additionally, you can combo this with `fmap` so that the base note changes:
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<MiniRepl
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client:idle
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tune={`i("9 11 12 10 - - -").tune("gunkali")
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.mul("<c3 c3 a3 d#3>".fmap(getFreq))
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.freq().legato("2 .7").room("1:15").rdim(8500).rlp(14000).rfade(8)`}
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/>
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Combining this with various polyrhythm tricks can become very evocative:
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<MiniRepl
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client:idle
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tune={`i("<[0 3 1 -] [-1 4 2 8]> ~ ~,<-4 -5>".add(4))
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.tune("iraq")
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.mul("<c3 d3 c#3>".fmap(getFreq))
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.freq().clip(.5).room(1).rfade(9)`}
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/>
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Another helpful trick when exploring new tunings is to strum them.
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Many have a much more enchanting sound that was chosen over many generations of musicians for being strummed.
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Take the `sanza` tuning:
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<MiniRepl
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client:idle
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tune={`i("4 5 6 7 8 9").tune("sanza")
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.mul(getFreq('c3'))
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.freq()`}
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/>
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Notes 7 and 9 will clash quite a bit if you arp them normally. Many tunings will have this sort of sound, and it can feel distracting on its own.
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See how close they are on the pitch wheel?
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<MiniRepl client:idle tune={`i("[7 9]!3").tune("sanza").mul(getFreq('c3')).freq()._pitchwheel()`} />
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This quality is often due to how the tunings were formed with instruments that were played differently than a piano.
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As such, some tunings are much better strummed, with the subtle clash of the detuned notes actually making the sound much more magical:
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<MiniRepl
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client:idle
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tune={`i("[0 1 2 3 4 5 6]@0.3 -"
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.add("<2 5 8 1>"))
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.tune("sanza")
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.mul(getFreq('c3')).freq()
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.legato("3").room(1).rfade(5)`}
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/>
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Note the legato and reverb effects make sure the sound of the strumming gets to wash together. Alternating the direction of the strum can make the
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tones sound even more alive, too.
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The `tranh3` tuning has a similar set of notes, with two clashing. You might trying plugging that in above and see if you find a favorite strumming pattern.
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You can also give tune a list of frequencies to use as the scale:
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<MiniRepl
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client:idle
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tune={`i("0 1 2 3 4").tune([
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261.6255653006,
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302.72962012827,
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350.29154279212,
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405.32593044476,
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469.00678383895,
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523.2511306012
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]).mul(220).freq();`}
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/>
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### xen(scaleOrRatios)
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{/* TODO add explanation of EDO to documentation */}
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<JsDoc client:idle name="Pattern.xen" h={0} />
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