EVS-Embedded-Voice-System/stt-worker

EVS STT Worker

This worker subscribes to VAD events from MQTT, transcribes the referenced WAV files, and publishes text back to MQTT.

Flow:

• input topic: evs/<device_id>/vad_segment
• reads: wav_path from JSON payload
• output topic: evs/<device_id>/transcript
• error topic: evs/<device_id>/stt_error
• default retain:
  • transcript retained (STT_TRANSCRIPT_RETAIN=true)
  • error non-retained (STT_ERROR_RETAIN=false)

Default model:

• STT_MODEL=small
• STT_DEVICE=cpu
• STT_COMPUTE_TYPE=int8