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remove silence monitoring logic
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Late Night Defender 2025-05-27 14:34:51 +07:00
parent c55a57adb4
commit fab2bbbcb8
1 changed files with 0 additions and 87 deletions
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87
src/App.jsx
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@ -181,98 +181,11 @@ Teacher: Good job! How about Magic – something special and powerful.
initRecording();
}, []);
const monitorSilence = () => {
if (!audioStreamRef.current) return;
if (audioContextRef.current) {
audioContextRef.current.close();
}
audioContextRef.current = new AudioContext();
// Resume AudioContext to avoid browser autoplay policy issues
audioContextRef.current.resume().then(() => {
const source = audioContextRef.current.createMediaStreamSource(audioStreamRef.current);
const analyser = audioContextRef.current.createAnalyser();
analyser.fftSize = 2048;
analyserRef.current = analyser;
const bufferLength = analyser.frequencyBinCount;
const dataArray = new Uint8Array(bufferLength);
dataArrayRef.current = dataArray;
source.connect(analyser);
const canvas = canvasRef.current;
const canvasCtx = canvas.getContext('2d');
const SILENCE_THRESHOLD = 0.02; // Adjust as needed (0 to 1 scale)
const SILENCE_TIMEOUT = 1500; // ms
let silenceStart = null;
const checkSilenceAndDraw = () => {
analyser.getByteTimeDomainData(dataArray);
// Draw waveform (same as before)
canvasCtx.fillStyle = '#000';
canvasCtx.fillRect(0, 0, canvas.width, canvas.height);
canvasCtx.lineWidth = 2;
canvasCtx.strokeStyle = '#00ff00';
canvasCtx.beginPath();
const sliceWidth = canvas.width / bufferLength;
let x = 0;
for (let i = 0; i < bufferLength; i++) {
const v = dataArray[i] / 128.0;
const y = v * canvas.height / 2;
if (i === 0) {
canvasCtx.moveTo(x, y);
} else {
canvasCtx.lineTo(x, y);
}
x += sliceWidth;
}
canvasCtx.lineTo(canvas.width, canvas.height / 2);
canvasCtx.stroke();
// RMS calculation
let sumSquares = 0;
for (let i = 0; i < bufferLength; i++) {
const normalized = (dataArray[i] - 128) / 128;
sumSquares += normalized * normalized;
}
const rms = Math.sqrt(sumSquares / bufferLength);
if (rms < SILENCE_THRESHOLD) {
// Silence detected
if (!silenceStart) silenceStart = Date.now();
else if (Date.now() - silenceStart > SILENCE_TIMEOUT) {
if (mediaRecorderRef.current && isRecording) {
mediaRecorderRef.current.stop();
setIsRecording(false);
audioContextRef.current.close();
}
silenceStart = null; // reset after stopping
return; // stop animation loop on silence stop
}
} else {
// Sound detected
silenceStart = null;
}
requestAnimationFrame(checkSilenceAndDraw);
};
});
};
const startRecording = () => {
if (!isRecording && mediaRecorderRef.current) {
audioChunksRef.current = [];
mediaRecorderRef.current.start();
setIsRecording(true);
monitorSilence();
}
};