tiny-server-essentials
Version:
A good utility toolkit to unify Express v5 and Socket.IO v4 into a seamless development experience with modular helpers, server wrappers, and WebSocket tools.
42 lines (41 loc) • 1.2 kB
JavaScript
;
/**
* VolumeProcessor is an AudioWorkletProcessor that calculates the root mean square (RMS)
* volume level from incoming audio samples in real-time.
*
* It listens to the input audio stream and computes the volume on each processing frame,
* then posts the calculated volume value back to the main thread via the processor port.
*
* This processor can be used for volume visualization, metering, or detecting silence/activity in an audio stream.
*
* Registered under the name: 'volume-processor'.
*
* @class
* @beta
*/
// @ts-ignore
class VolumeProcessor extends AudioWorkletProcessor {
constructor() {
super();
this._volume = 0;
}
/**
* @param {*} inputs
* @returns {boolean}
*/
process(inputs) {
const input = inputs[0][0];
if (input) {
let sum = 0;
for (let i = 0; i < input.length; ++i) {
sum += input[i] * input[i];
}
const volume = Math.sqrt(sum / input.length);
// @ts-ignore
this.port.postMessage(volume);
}
return true;
}
}
// @ts-ignore
registerProcessor('volume-processor', VolumeProcessor);