mirror of
https://github.com/Tonejs/Tone.js
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aaf880c925
* WIP moving tests to web-test-runner * updating thresholds * Adding file extensions * Testing integrations * linting * fixing dep * moving back to root dir * prettier all of the files * updating eslint rules to use with prettier * remove import package * moving tsignore around * removing unneeded ignores * all tests run on puppeteer, no need for testing guards * linting * import type syntax * cleaning up * Update package.json
107 lines
2.6 KiB
TypeScript
107 lines
2.6 KiB
TypeScript
import {
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ToneAudioNode,
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ToneAudioNodeOptions,
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} from "../../core/context/ToneAudioNode.js";
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import { Merge } from "./Merge.js";
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import { Add } from "../../signal/Add.js";
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import { Multiply } from "../../signal/Multiply.js";
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import { Subtract } from "../../signal/Subtract.js";
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import { Gain } from "../../core/context/Gain.js";
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import { optionsFromArguments } from "../../core/util/Defaults.js";
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export type MidSideMergeOptions = ToneAudioNodeOptions;
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/**
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* MidSideMerge merges the mid and side signal after they've been separated by {@link MidSideSplit}
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* ```
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* Mid = (Left+Right)/sqrt(2); // obtain mid-signal from left and right
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* Side = (Left-Right)/sqrt(2); // obtain side-signal from left and right
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* ```
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* @category Component
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*/
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export class MidSideMerge extends ToneAudioNode<MidSideMergeOptions> {
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readonly name: string = "MidSideMerge";
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/**
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* There is no input, connect sources to either {@link mid} or {@link side} inputs.
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*/
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readonly input: undefined;
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/**
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* The merged signal
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*/
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readonly output: Merge;
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/**
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* Merge the incoming signal into left and right channels
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*/
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private _merge: Merge;
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/**
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* The "mid" input.
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*/
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readonly mid: ToneAudioNode;
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/**
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* The "side" input.
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*/
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readonly side: ToneAudioNode;
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/**
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* Recombine the mid/side into Left
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*/
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private _left: Add;
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/**
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* Recombine the mid/side into Right
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*/
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private _right: Subtract;
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/**
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* Multiply the right by sqrt(1/2)
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*/
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private _leftMult: Multiply;
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/**
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* Multiply the left by sqrt(1/2)
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*/
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private _rightMult: Multiply;
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constructor(options?: Partial<MidSideMergeOptions>);
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constructor() {
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super(optionsFromArguments(MidSideMerge.getDefaults(), arguments));
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this.mid = new Gain({ context: this.context });
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this.side = new Gain({ context: this.context });
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this._left = new Add({ context: this.context });
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this._leftMult = new Multiply({
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context: this.context,
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value: Math.SQRT1_2,
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});
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this._right = new Subtract({ context: this.context });
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this._rightMult = new Multiply({
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context: this.context,
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value: Math.SQRT1_2,
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});
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this._merge = this.output = new Merge({ context: this.context });
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this.mid.fan(this._left);
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this.side.connect(this._left.addend);
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this.mid.connect(this._right);
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this.side.connect(this._right.subtrahend);
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this._left.connect(this._leftMult);
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this._right.connect(this._rightMult);
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this._leftMult.connect(this._merge, 0, 0);
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this._rightMult.connect(this._merge, 0, 1);
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}
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dispose(): this {
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super.dispose();
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this.mid.dispose();
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this.side.dispose();
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this._leftMult.dispose();
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this._rightMult.dispose();
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this._left.dispose();
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this._right.dispose();
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return this;
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}
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}
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