bd8e5b78d8
- Create audio-worklet.js with MicrophoneProcessor for audio capture - Implement noise gate and RMS calculation in worklet - Send PCM data via MessagePort to main thread - Update startStreaming to use AudioWorkletNode instead of deprecated ScriptProcessorNode - Remove WebCodecs decoder complexity from listen - Keep simple PCM playback for listen feature
43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
class MicrophoneProcessor extends AudioWorkletProcessor {
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constructor() {
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super();
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this.noiseGateThreshold = 0.01;
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this.noiseGateHoldFrames = 3;
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this.noiseGateHold = 0;
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}
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process(inputs, outputs, parameters) {
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const input = inputs[0];
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if (!input || input.length === 0) return true;
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const inputData = input[0];
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const output = outputs[0];
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if (output && output.length > 0) {
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output[0].set(inputData);
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}
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let sum = 0;
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for (let i = 0; i < inputData.length; i++) {
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sum += inputData[i] * inputData[i];
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}
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const rms = Math.sqrt(sum / inputData.length);
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if (rms < this.noiseGateThreshold && this.noiseGateHold <= 0) {
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this.port.postMessage({ type: 'audio', rms: 0, data: null });
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return true;
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}
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this.noiseGateHold = rms >= this.noiseGateThreshold ? this.noiseGateHoldFrames : this.noiseGateHold - 1;
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const pcm = new Int16Array(inputData.length);
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for (let i = 0; i < inputData.length; i++) {
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pcm[i] = Math.max(-1, Math.min(1, inputData[i])) * 32767;
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}
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this.port.postMessage({ type: 'audio', rms, data: pcm.buffer }, [pcm.buffer]);
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return true;
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}
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}
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registerProcessor('microphone-processor', MicrophoneProcessor);
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