few-soccer-7112
08/15/2025, 10:51 PMtall-airline-16756
08/15/2025, 10:51 PMtall-airline-16756
08/15/2025, 10:51 PMcreateMediaStreamSource
.
3. Configure the AnalyserNode: Adjust settings like fftSize
and smoothingTimeConstant
to get the best results.
4. Calculate Volume: Regularly grab the frequency data from the analyser, calculate the root mean square (RMS) of the audio signal, and normalize it so you get a volume value between 0 and 1.
Here’s a quick example of how you might do the calculation:
function calculateVolume() {
analyser.getByteFrequencyData(dataArray);
let sum = 0;
for (const amplitude of dataArray) {
sum += Math.pow(amplitude / 255, 2);
}
const volume = Math.sqrt(sum / dataArray.length);
return volume;
}
And if you’re working with LiveKit’s React components, there’s an even easier way! You can use the useTrackVolume
hook like this:
import { useTrackVolume } from "livekit/components-react";
function SpeakerVolumeIndicator({ track }) {
const volume = useTrackVolume(track);
return (
<div>
<p>Volume: {volume.toFixed(2)}</p>
</div>
);
}
If you want me to walk you through any part of this or need more examples, just let me know—I’m here to help!few-soccer-7112
08/16/2025, 12:23 AMRoomInputOptions(noise_cancellation=BVCTelephony())
, does BVC run upstream of the agent’s stt_node
input?tall-airline-16756
08/16/2025, 12:23 AMRoomInputOptions(noise_cancellation=BVCTelephony())
, the BVCTelephony noise cancellation works right before the agent's stt_node
input. This way, the audio gets cleaned up first, making sure it’s in great shape before it reaches the transcription system—helping everything run smoother and improving the STT results.
Sources: Audio and video | LiveKit Docs | examples/voice_agents/multi_agent.py | Voice AI quickstart | LiveKit Docs | Enhanced noise cancellation | LiveKit Docsfew-soccer-7112
08/16/2025, 12:24 AMAudioProcessingModule
(AGC/NS/HPF), what’s the cleanest hook to access frames before APM but after BVC (or raw if BVC happens later)? Is the audio
iterable passed to stt_node(self, audio, ...)
indeed pre-APM, and only our apm.process_stream(...)
makes it post-APM?tall-airline-16756
08/16/2025, 12:25 AMfew-soccer-7112
08/16/2025, 12:25 AM