first draft of soundMap to register keys for s

+ refactor sampler to use it
+ refactor synth to use it
+ add 'source' control
+ wip: samples tab
+ wip: webadirt ?
+ wip: soundfonts

packages/webaudio/synth.mjs

@@ -0,0 +1,34 @@
+import { fromMidi, toMidi } from '@strudel.cycles/core';
+import { setSound } from './webaudio.mjs';
+import { getOscillator, gainNode, getADSR } from './helpers.mjs';
+
+export function loadSynthSounds() {
+  ['sine', 'square', 'triangle', 'sawtooth'].forEach((wave) => {
+    setSound(wave, ({ hap, duration, t }) => {
+      // destructure adsr here, because the default should be different for synths and samples
+      const { attack = 0.001, decay = 0.05, sustain = 0.6, release = 0.01 } = hap.value;
+      let { n, note, freq } = hap.value;
+      // with synths, n and note are the same thing
+      n = note || n || 36;
+      if (typeof n === 'string') {
+        n = toMidi(n); // e.g. c3 => 48
+      }
+      // get frequency
+      if (!freq && typeof n === 'number') {
+        freq = fromMidi(n); // + 48);
+      }
+      // maybe pull out the above frequency resolution?? (there is also getFrequency but it has no default)
+      // make oscillator
+      const o = getOscillator({ t, s: wave, freq, duration, release });
+      // chain.push(o);
+      // level down oscillators as they are really loud compared to samples i've tested
+      //chain.push(gainNode(0.3));
+      const g = gainNode(0.3);
+      // TODO: make adsr work with samples without pops
+      // envelope
+      const adsr = getADSR(attack, decay, sustain, release, 1, t, t + duration);
+      //chain.push(adsr);
+      return o.connect(g).connect(adsr);
+    });
+  });
+}