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how do min_interruption_duration and vad_prefix_pa...
# ask-ai
k
how do min_interruption_duration and vad_prefix_padding_duration interact?
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.
Hi there! I’d love to help clarify the roles of the parameters 
min_interruption_duration
and 
vad_prefix_padding_duration
for you. They actually work independently and don’t directly affect each other. min_interruption_duration: This sets the minimum length of detected speech needed to count as an interruption. So, even if some speech is detected, it won’t be considered an interruption unless it lasts at least this amount of time. vad_prefix_padding_duration: This one controls how much audio is included just before the start of detected speech. It helps make sure the beginning of what’s said isn’t cut off. This affects the actual audio content but doesn’t influence when an interruption is triggered. In short, while 
vad_prefix_padding_duration
shapes the audio segment you hear, the interruption decision depends solely on the speech lasting at least the 
min_interruption_duration
. If you’d like, I’m here to walk through any specific examples or questions you have—just let me know! Sources: tests/fake_vad.py | Silero VAD plugin | LiveKit Docs
k
but if the audio is being padded by some duration is that duration not included in the duration for the interruption trigger?
t
Thanks for your question! The 
vad_prefix_padding_duration
doesn’t actually affect the 
speech_duration
metric that’s used for the interruption trigger. The 
speech_duration
is calculated based on the time the VAD detects speech activity, starting right when the voice activity crosses the threshold. The padding duration is there to add a bit of context before the speech starts in the audio buffer, but it’s separate from how the duration is calculated. The interruption logic only looks at the actual detected speech duration, which needs to meet or go beyond the 
min_interruption_duration
threshold to trigger an interruption. If anything isn’t clear or you have more questions, please don’t hesitate to ask—I’m here to help! Sources: livekit-plugins/livekit-plugins-baseten/livekit/plugins/baseten/stt.py
k
does min_silence_duration on the vad effect min_interruption_duration?
t
I’m happy to help clarify the 
min_silence_duration
and 
min_interruption_duration
parameters for you! These two settings actually work independently of each other: • min_silence_duration: This controls how long a silence needs to last after someone stops speaking before the VAD recognizes it as an 
END_OF_SPEECH
event. It helps detect when a speech segment has ended. • min_interruption_duration: This sets the minimum length of speech required to count as a valid interruption, based on what the VAD detects as speech activity. So, adjusting one won’t affect the other since they don’t share logic or interact directly. If you’d like, I’m here to walk you through it further or help with any other questions you might have! Sources: Silero VAD plugin | LiveKit Docs | livekit-agents/livekit/agents/voice/agent_activity.py | Speech & Audio Processing | livekit/livekit_composite | DeepWiki
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