Fact · Speech recognition
500milliseconds (minimum voice activity timeout)
Google Cloud's voice activity timeouts must be greater than 500 ms and less than 60 seconds.
Checked against its source on October 17, 2026
In the source's own words
“Voice activity timeouts must be greater than 500ms and less than 60s.”
Voice activity events and timeouts (Speech-to-Text, Google Cloud), Google Cloud, Google Cloud, n.d., Enable voice activity timeouts.
Open the original- What it measures
- The timeouts are set on the voice activity message in the streaming features, separately for speech begin and speech end.
- What it does not show
- The 500 ms figure is a minimum for the setting, not the length of a typical pause.