tone/build/esm/signal/AudioToGain.js

A Web Audio framework for making interactive music in the browser.

import { SignalOperator } from "./SignalOperator";
import { WaveShaper } from "./WaveShaper";
/**
 * AudioToGain converts an input in AudioRange [-1,1] to NormalRange [0,1].
 * See [[GainToAudio]].
 * @category Signal
 */
export class AudioToGain extends SignalOperator {
    constructor() {
        super(...arguments);
        this.name = "AudioToGain";
        /**
         * The node which converts the audio ranges
         */
        this._norm = new WaveShaper({
            context: this.context,
            mapping: x => (x + 1) / 2,
        });
        /**
         * The AudioRange input [-1, 1]
         */
        this.input = this._norm;
        /**
         * The GainRange output [0, 1]
         */
        this.output = this._norm;
    }
    /**
     * clean up
     */
    dispose() {
        super.dispose();
        this._norm.dispose();
        return this;
    }
}
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