async def start(self, frame: StartFrame):
        """Handle service start.

        Args:
            frame: StartFrame that triggered this method
        """
        await super().start(frame)
        self._connection_active = True

        await self._warm_up_model()

        logger.info("UltravoxSTTService started")
Handle service start.

        Args:
            frame: StartFrame that triggered this method
        
src/pipecat/services/ultravox/stt.py