mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-15 08:17:07 +00:00
f17249691d
now in the form Tone.Something instead of using `import { Something } from "tone"`. It makes the example runner on the docs page work much faster
73 lines
2 KiB
TypeScript
73 lines
2 KiB
TypeScript
import { Delay } from "../core/context/Delay";
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import { Param } from "../core/context/Param";
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import { NormalRange, Time } from "../core/type/Units";
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import { optionsFromArguments } from "../core/util/Defaults";
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import { readOnly } from "../core/util/Interface";
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import { FeedbackEffect, FeedbackEffectOptions } from "./FeedbackEffect";
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interface FeedbackDelayOptions extends FeedbackEffectOptions {
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delayTime: Time;
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maxDelay: Time;
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}
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/**
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* FeedbackDelay is a DelayNode in which part of output signal is fed back into the delay.
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*
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* @param delayTime The delay applied to the incoming signal.
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* @param feedback The amount of the effected signal which is fed back through the delay.
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* @example
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* const feedbackDelay = new Tone.FeedbackDelay("8n", 0.5).toDestination();
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* const tom = new Tone.MembraneSynth({
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* octaves: 4,
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* pitchDecay: 0.1
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* }).connect(feedbackDelay);
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* tom.triggerAttackRelease("A2", "32n");
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* @category Effect
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*/
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export class FeedbackDelay extends FeedbackEffect<FeedbackDelayOptions> {
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readonly name: string = "FeedbackDelay";
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/**
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* the delay node
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*/
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private _delayNode: Delay;
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/**
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* The delayTime of the FeedbackDelay.
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*/
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readonly delayTime: Param<"time">;
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constructor(delayTime?: Time, feedback?: NormalRange);
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constructor(options?: Partial<FeedbackDelayOptions>);
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constructor() {
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super(optionsFromArguments(FeedbackDelay.getDefaults(), arguments, ["delayTime", "feedback"]));
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const options = optionsFromArguments(FeedbackDelay.getDefaults(), arguments, ["delayTime", "feedback"]);
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this._delayNode = new Delay({
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context: this.context,
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delayTime: options.delayTime,
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maxDelay: options.maxDelay,
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});
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this.delayTime = this._delayNode.delayTime;
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// connect it up
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this.connectEffect(this._delayNode);
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readOnly(this, "delayTime");
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}
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static getDefaults(): FeedbackDelayOptions {
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return Object.assign(FeedbackEffect.getDefaults(), {
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delayTime: 0.25,
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maxDelay: 1,
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});
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}
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dispose(): this {
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super.dispose();
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this._delayNode.dispose();
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this.delayTime.dispose();
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return this;
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}
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}
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