fix cyclist clock cycle
This commit is contained in:
Jade (Rose) Rowland
parent
7df663e87d
commit
16472b59dd
3 changed files with 92 additions and 81 deletions
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@ -2,6 +2,7 @@
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// LICENSE GNU General Public License v3.0 see https://github.com/dktr0/WebDirt/blob/main/LICENSE
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const clamp = (num, min, max) => Math.min(Math.max(num, min), max);
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const blockSize = 128;
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// adjust waveshape to remove frequencies above nyquist to prevent aliasing
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// referenced from https://www.kvraudio.com/forum/viewtopic.php?t=375517
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function polyBlep(phase, dt) {
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@ -67,6 +68,64 @@ const waveshapes = {
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},
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};
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class AMProcessor extends AudioWorkletProcessor {
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static get parameterDescriptors() {
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return [
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{ name: 'cps', defaultValue: 0.5 },
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{ name: 'speed', defaultValue: 0.5 },
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{ name: 'cycle', defaultValue: 0 },
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// { name: 'shape', defaultValue: 'tri' },
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{ name: 'depth', defaultValue: 1 },
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];
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}
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constructor() {
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super();
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this.phase;
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this.started = false;
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}
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incrementPhase(dt) {
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this.phase += dt;
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if (this.phase > 1.0) {
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this.phase = this.phase - 1;
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}
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}
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process(inputs, outputs, parameters) {
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const input = inputs[0];
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const output = outputs[0];
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const hasInput = !(input[0] === undefined);
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if (this.started && !hasInput) {
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return false;
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}
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this.started = hasInput;
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const speed = parameters['speed'][0];
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const cps = parameters['cps'][0];
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const cycle = parameters['cycle'][0];
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const depth = clamp(parameters['depth'][0], 0, 1);
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const blockSize = 128;
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const frequency = speed * cps;
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if (this.phase == null) {
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const secondsPassed = cycle / cps;
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this.phase = Math.max(0, (secondsPassed * frequency) % 1);
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}
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const dt = frequency / sampleRate;
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for (let n = 0; n < blockSize; n++) {
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for (let i = 0; i < input.length; i++) {
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const modval = waveshapes.tri(this.phase, 0.99) * depth + (1 - depth);
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output[i][n] = input[i][n] * modval;
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}
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this.incrementPhase(dt);
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}
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return true;
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}
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}
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registerProcessor('am-processor', AMProcessor);
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class CoarseProcessor extends AudioWorkletProcessor {
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static get parameterDescriptors() {
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return [{ name: 'coarse', defaultValue: 1 }];
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@ -74,19 +133,21 @@ class CoarseProcessor extends AudioWorkletProcessor {
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constructor() {
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super();
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this.started = false;
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}
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process(inputs, outputs, parameters) {
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const input = inputs[0];
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const output = outputs[0];
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const blockSize = 128;
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const hasInput = !(input[0] === undefined);
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if (this.started && !hasInput) {
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return false;
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}
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this.started = hasInput;
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let coarse = parameters.coarse[0] ?? 0;
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coarse = Math.max(1, coarse);
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if (input[0] == null || output[0] == null) {
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return false;
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}
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for (let n = 0; n < blockSize; n++) {
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for (let i = 0; i < input.length; i++) {
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output[i][n] = n % coarse === 0 ? input[i][n] : output[i][n - 1];
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@ -104,19 +165,22 @@ class CrushProcessor extends AudioWorkletProcessor {
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constructor() {
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super();
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this.started = false;
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}
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process(inputs, outputs, parameters) {
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const input = inputs[0];
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const output = outputs[0];
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const blockSize = 128;
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const hasInput = !(input[0] === undefined);
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if (this.started && !hasInput) {
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return false;
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}
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this.started = hasInput;
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let crush = parameters.crush[0] ?? 8;
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crush = Math.max(1, crush);
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if (input[0] == null || output[0] == null) {
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return false;
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}
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for (let n = 0; n < blockSize; n++) {
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for (let i = 0; i < input.length; i++) {
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const x = Math.pow(2, crush - 1);
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@ -128,59 +192,6 @@ class CrushProcessor extends AudioWorkletProcessor {
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}
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registerProcessor('crush-processor', CrushProcessor);
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class AMProcessor extends AudioWorkletProcessor {
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static get parameterDescriptors() {
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return [
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{ name: 'cps', defaultValue: 0.5 },
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{ name: 'speed', defaultValue: 0.5 },
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{ name: 'cycle', defaultValue: 0 },
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// { name: 'shape', defaultValue: 'tri' },
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{ name: 'depth', defaultValue: 1 },
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];
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}
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constructor() {
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super();
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this.phase;
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}
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incrementPhase(dt) {
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this.phase += dt;
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if (this.phase > 1.0) {
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this.phase = this.phase - 1;
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}
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}
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process(inputs, outputs, parameters) {
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const speed = parameters['speed'][0];
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const cps = parameters['cps'][0];
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const cycle = parameters['cycle'][0];
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const depth = clamp(parameters['depth'][0], 0, 1);
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const blockSize = 128;
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const frequency = speed * cps;
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if (this.phase == null) {
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const secondsPassed = cycle / cps;
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this.phase = Math.max(0, (secondsPassed * frequency) % 1);
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}
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const input = inputs[0];
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const output = outputs[0];
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const dt = frequency / sampleRate;
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for (let n = 0; n < blockSize; n++) {
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for (let i = 0; i < input.length; i++) {
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const modval = waveshapes.tri(this.phase, 0.99) * depth + (1 - depth);
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output[i][n] = input[i][n] * modval;
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}
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this.incrementPhase(dt);
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}
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return true;
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}
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}
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registerProcessor('am-processor', AMProcessor);
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class ShapeProcessor extends AudioWorkletProcessor {
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static get parameterDescriptors() {
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return [
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@ -191,21 +202,24 @@ class ShapeProcessor extends AudioWorkletProcessor {
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constructor() {
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super();
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this.started = false;
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}
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process(inputs, outputs, parameters) {
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const input = inputs[0];
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const output = outputs[0];
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const blockSize = 128;
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const hasInput = !(input[0] === undefined);
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if (this.started && !hasInput) {
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return false;
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}
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this.started = hasInput;
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let shape = parameters.shape[0];
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shape = shape < 1 ? shape : 1.0 - 4e-10;
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shape = (2.0 * shape) / (1.0 - shape);
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const postgain = Math.max(0.001, Math.min(1, parameters.postgain[0]));
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if (input[0] == null || output[0] == null) {
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return false;
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}
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for (let n = 0; n < blockSize; n++) {
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for (let i = 0; i < input.length; i++) {
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output[i][n] = (((1 + shape) * input[i][n]) / (1 + shape * Math.abs(input[i][n]))) * postgain;
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@ -226,19 +240,22 @@ class DistortProcessor extends AudioWorkletProcessor {
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constructor() {
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super();
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this.started = false;
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}
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process(inputs, outputs, parameters) {
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const input = inputs[0];
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const output = outputs[0];
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const blockSize = 128;
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const hasInput = !(input[0] === undefined);
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if (this.started && !hasInput) {
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return false;
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}
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this.started = hasInput;
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const shape = Math.expm1(parameters.distort[0]);
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const postgain = Math.max(0.001, Math.min(1, parameters.postgain[0]));
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if (input[0] == null || output[0] == null) {
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return false;
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}
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for (let n = 0; n < blockSize; n++) {
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for (let i = 0; i < input.length; i++) {
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output[i][n] = (((1 + shape) * input[i][n]) / (1 + shape * Math.abs(input[i][n]))) * postgain;
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@ -249,6 +266,7 @@ class DistortProcessor extends AudioWorkletProcessor {
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}
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registerProcessor('distort-processor', DistortProcessor);
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// SUPERSAW
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function lerp(a, b, n) {
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return n * (b - a) + a;
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}
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