tone
Version:
A Web Audio framework for making interactive music in the browser.
53 lines • 2.04 kB
JavaScript
import { ToneAudioNode } from "../../core/context/ToneAudioNode";
import { Merge } from "./Merge";
import { Add } from "../../signal/Add";
import { Multiply } from "../../signal/Multiply";
import { Subtract } from "../../signal/Subtract";
import { Gain } from "../../core/context/Gain";
import { optionsFromArguments } from "../../core/util/Defaults";
/**
* MidSideMerge merges the mid and side signal after they've been separated by [[MidSideSplit]]
* ```
* Mid = (Left+Right)/sqrt(2); // obtain mid-signal from left and right
* Side = (Left-Right)/sqrt(2); // obtain side-signal from left and right
* ```
* @category Component
*/
export class MidSideMerge extends ToneAudioNode {
constructor() {
super(optionsFromArguments(MidSideMerge.getDefaults(), arguments));
this.name = "MidSideMerge";
this.mid = new Gain({ context: this.context });
this.side = new Gain({ context: this.context });
this._left = new Add({ context: this.context });
this._leftMult = new Multiply({
context: this.context,
value: Math.SQRT1_2
});
this._right = new Subtract({ context: this.context });
this._rightMult = new Multiply({
context: this.context,
value: Math.SQRT1_2
});
this._merge = this.output = new Merge({ context: this.context });
this.mid.fan(this._left);
this.side.connect(this._left.addend);
this.mid.connect(this._right);
this.side.connect(this._right.subtrahend);
this._left.connect(this._leftMult);
this._right.connect(this._rightMult);
this._leftMult.connect(this._merge, 0, 0);
this._rightMult.connect(this._merge, 0, 1);
}
dispose() {
super.dispose();
this.mid.dispose();
this.side.dispose();
this._leftMult.dispose();
this._rightMult.dispose();
this._left.dispose();
this._right.dispose();
return this;
}
}
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