does vad min_silence_duration and prefix_padding_d...
# ask-ai
k
does vad min_silence_duration and prefix_padding_duration slow down end of utterance detection or are they not dependent on each other?
t
Thanks for reaching out, Ethan. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
I'm glad you asked about the parameters
min_silence_duration
and
prefix_padding_duration
in LiveKit's VAD—they do play important roles in detecting the end of an utterance, each in their own way: •
min_silence_duration
: This sets the minimum length of silence needed to trigger an
END_OF_SPEECH
event. If you set this value longer, the system will wait a bit more before deciding the utterance has ended. •
prefix_padding_duration
: This adds a bit of audio before the detected start of speech to each chunk. Its main purpose is to keep some context before speech begins, which can help prevent cutting off the start of an utterance and can subtly influence the timing. Please feel free to reach out if you'd like me to explain anything further or if you have more questions—I'm here to help! Sources: Silero VAD plugin | LiveKit Docs | How does end-of-utterance detection work in conversations? | agents/src/voice/audio_recognition.ts