Minimum number of words in an interim STT transcript before a barge-in
aborts the agent's in-flight turn (pipeline mode). Default 2 so a single
word — a backchannel ("mm-hmm", "yeah"), a cough transcribed as one token,
or the leading fragment of the user's own turn — does NOT cut the agent off
mid-sentence. Sub-threshold utterances are not lost: they are still
transcribed and answered once the current reply finishes (see onSttFinal).
Set to 1 to restore interrupt-on-any-word.
Minimum number of words in an interim STT transcript before a barge-in aborts the agent's in-flight turn (pipeline mode). Default 2 so a single word — a backchannel ("mm-hmm", "yeah"), a cough transcribed as one token, or the leading fragment of the user's own turn — does NOT cut the agent off mid-sentence. Sub-threshold utterances are not lost: they are still transcribed and answered once the current reply finishes (see onSttFinal). Set to 1 to restore interrupt-on-any-word.