asr_client/__main__.py:--audio-prepend-silence <ms>option: prepends zero-filled PCM silence to the audio stream before sending to the ASR service; works for both--audio-pathsand--audio-mic; useful for priming the detector when the utterance starts immediately at the beginning of the audio.asr_client/__main__.py:--audio-append-silence <ms>option: appends zero-filled PCM silence to the audio stream; works for both--audio-pathsand--audio-mic; useful for ensuring the detector has enough trailing silence to finalise the last utterance.