testing

packages/core/controls.mjs

@@ -430,6 +430,17 @@ export const { crush } = registerControl('crush');
  */
 export const { coarse } = registerControl('coarse');
 
+/**
+ * modulate the output gain of a sound with a continuous wave
+ *
+ * @name gainmod
+ * @param {number | Pattern} factor 1 for original 2 for half, 3 for a third and so on.
+ * @example
+ * s("triangle").gainmod("2:1:0")
+ *
+ */
+export const { gainmod } = registerControl('gainmod');
+
 /**
  * Allows you to set the output channels on the interface
  *

packages/core/cyclist.mjs

@@ -56,7 +56,7 @@ export class Cyclist {
               // the following line is dumb and only here for backwards compatibility
               // see https://github.com/tidalcycles/strudel/pull/1004
               const deadline = targetTime - phase;
-              onTrigger?.(hap, deadline, duration, this.cps, targetTime);
+              onTrigger?.(hap, deadline, duration, this.cps, targetTime, end);
             }
           });
         } catch (e) {

packages/core/neocyclist.mjs

@@ -4,6 +4,7 @@ Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/st
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+import Fraction from 'fraction.js';
 import { logger } from './logger.mjs';
 
 export class NeoCyclist {
@@ -86,7 +87,15 @@ export class NeoCyclist {
             this.latency +
             this.worker_time_dif;
           const duration = hap.duration / this.cps;
-          onTrigger?.(hap, 0, duration, this.cps, targetTime);
+          onTrigger?.(
+            hap,
+            0,
+            duration,
+            this.cps,
+            targetTime,
+            this.cycle,
+            // + Fraction(this.latency).div(this.cps)
+          );
         }
       });
     };

packages/core/repl.mjs

@@ -178,15 +178,15 @@ export function repl({
 
 export const getTrigger =
   ({ getTime, defaultOutput }) =>
-  async (hap, deadline, duration, cps, t) => {
+  async (hap, deadline, duration, cps, t, cycle = 0) => {
     // TODO: get rid of deadline after https://github.com/tidalcycles/strudel/pull/1004
     try {
       if (!hap.context.onTrigger || !hap.context.dominantTrigger) {
-        await defaultOutput(hap, deadline, duration, cps, t);
+        await defaultOutput(hap, deadline, duration, cps, t, cycle);
       }
       if (hap.context.onTrigger) {
         // call signature of output / onTrigger is different...
-        await hap.context.onTrigger(getTime() + deadline, hap, getTime(), cps, t);
+        await hap.context.onTrigger(getTime() + deadline, hap, getTime(), cps, t, cycle);
       }
     } catch (err) {
       logger(`[cyclist] error: ${err.message}`, 'error');

packages/superdough/superdough.mjs

@@ -260,7 +260,8 @@ export function resetGlobalEffects() {
   analysersData = {};
 }
 
-export const superdough = async (value, t, hapDuration) => {
+export const superdough = async (value, t, hapDuration, cps, cycle) => {
+  console.log({ cps, cycle });
   const ac = getAudioContext();
   if (typeof value !== 'object') {
     throw new Error(
@@ -322,6 +323,7 @@ export const superdough = async (value, t, hapDuration) => {
     phasercenter,
     //
     coarse,
+    gainmod,
     crush,
     shape,
     shapevol = 1,
@@ -470,6 +472,7 @@ export const superdough = async (value, t, hapDuration) => {
   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 && chain.push(getWorklet(ac, 'gainmod-processor', { speed: gainmod, cps, cycle }));
 
   compressorThreshold !== undefined &&
     chain.push(

packages/superdough/worklets.mjs

@@ -1,6 +1,36 @@
 // coarse, crush, and shape processors adapted from dktr0's webdirt: https://github.com/dktr0/WebDirt/blob/5ce3d698362c54d6e1b68acc47eb2955ac62c793/dist/AudioWorklets.js
 // LICENSE GNU General Public License v3.0 see https://github.com/dktr0/WebDirt/blob/main/LICENSE
 
+const linearEnvelope = (startVal, EndVal, startTime, endTime, currentTime, hold = 0) => {
+  let min = 0.001;
+  currentTime = currentTime - hold;
+  if (startTime > currentTime) {
+    return 1;
+  }
+  if (currentTime > endTime) {
+    return min;
+  }
+  // change relative start time to 0 to prevent numeric overflow
+  currentTime = currentTime - startTime;
+  endTime = endTime - startTime;
+  startTime = 0;
+
+  let x1 = startTime;
+  let y1 = startVal;
+  let x2 = endTime;
+  let y2 = EndVal;
+
+  // Calculate the growth or decay rate (b)
+  let b = y1 / y2 / (x1 - x2);
+
+  // Calculate the initial value (a)
+  let a = y1 / (b * x1);
+
+  let x = currentTime;
+  //  calculate y for any x
+  return a * (b * x);
+};
+
 class CoarseProcessor extends AudioWorkletProcessor {
   static get parameterDescriptors() {
     return [{ name: 'coarse', defaultValue: 1 }];
@@ -62,6 +92,41 @@ class CrushProcessor extends AudioWorkletProcessor {
 }
 registerProcessor('crush-processor', CrushProcessor);
 
+class GainModProcessor extends AudioWorkletProcessor {
+  static get parameterDescriptors() {
+    return [
+      { name: 'cps', defaultValue: 0.5 },
+      { name: 'speed', defaultValue: 0.5 },
+      { name: 'cycle', defaultValue: 0 },
+    ];
+  }
+
+  constructor() {
+    super();
+  }
+
+  process(inputs, outputs, parameters) {
+    const input = inputs[0];
+    const output = outputs[0];
+    const blockSize = 128;
+
+    let crush = parameters.crush[0] ?? 8;
+    crush = Math.max(1, crush);
+
+    if (input[0] == null || output[0] == null) {
+      return false;
+    }
+    for (let n = 0; n < blockSize; n++) {
+      for (let i = 0; i < input.length; i++) {
+        const x = Math.pow(2, crush - 1);
+        output[i][n] = Math.round(input[i][n] * x) / x;
+      }
+    }
+    return true;
+  }
+}
+registerProcessor('gainmod-processor', GainModProcessor);
+
 class ShapeProcessor extends AudioWorkletProcessor {
   static get parameterDescriptors() {
     return [

packages/webaudio/webaudio.mjs

@@ -17,9 +17,9 @@ const hap2value = (hap) => {
 
 export const webaudioOutputTrigger = (t, hap, ct, cps) => superdough(hap2value(hap), t - ct, hap.duration / cps, cps);
 // uses more precise, absolute t if available, see https://github.com/tidalcycles/strudel/pull/1004
-export const webaudioOutput = (hap, deadline, hapDuration, cps, t) =>
+export const webaudioOutput = (hap, deadline, hapDuration, cps, t, cycle) => {
-  superdough(hap2value(hap), t ? `=${t}` : deadline, hapDuration);
+  return superdough(hap2value(hap), t ? `=${t}` : deadline, hapDuration, cps, cycle);
-
+};
 Pattern.prototype.webaudio = function () {
   return this.onTrigger(webaudioOutputTrigger);
 };
@@ -30,6 +30,7 @@ export function webaudioScheduler(options = {}) {
     defaultOutput: webaudioOutput,
     ...options,
   };
+
   const { defaultOutput, getTime } = options;
   return new strudel.Cyclist({
     ...options,