transcription_user_turn_start_strategy

User turn start strategy based on transcriptions.

class pipecat.turns.user_start.transcription_user_turn_start_strategy.TranscriptionUserTurnStartStrategy(*, use_interim: bool = True, **kwargs)[source]

Bases: BaseUserTurnStartStrategy

User turn start strategy based on transcriptions.

This strategy signals the start of a user turn when a transcription is received while the bot is speaking. It is useful as a fallback in scenarios where VAD-based detection fails (for example, when the user speaks very softly) but the STT service still produces transcriptions.

__init__(*, use_interim: bool = True, **kwargs)[source]: Initialize transcription-based user turn start strategy.

async process_frame(frame: Frame) → ProcessFrameResult[source]

Process an incoming frame to detect the start of a user turn.

Parameters:: frame – The frame to be processed.
Returns:: STOP if a transcription was received, CONTINUE otherwise.