speech_streaming.py 文件源码

def record_audio(channels, rate, chunk):
    """Opens a recording stream in a context manager."""
    audio_interface = pyaudio.PyAudio()
    audio_stream = audio_interface.open(
        format=pyaudio.paInt16, channels=channels, rate=rate,
        input=True, frames_per_buffer=chunk,
    input_device_index=1,
    )

    yield audio_stream

    audio_stream.stop_stream()
    audio_stream.close()
    audio_interface.terminate()
# [END audio_stream]