让PyAudio与谷歌助手协同工作的问题

import pyaudio
import wave
import subprocess

# 录制音频
def record_audio(filename, duration):
    CHUNK = 1024
    FORMAT = pyaudio.paInt16
    CHANNELS = 1
    RATE = 16000

    p = pyaudio.PyAudio()

    stream = p.open(format=FORMAT,
                    channels=CHANNELS,
                    rate=RATE,
                    input=True,
                    frames_per_buffer=CHUNK)

    frames = []

    print("开始录音...")
    for i in range(0, int(RATE / CHUNK * duration)):
        data = stream.read(CHUNK)
        frames.append(data)

    print("录音结束.")

    stream.stop_stream()
    stream.close()
    p.terminate()

    wf = wave.open(filename, 'wb')
    wf.setnchannels(CHANNELS)
    wf.setsampwidth(p.get_sample_size(FORMAT))
    wf.setframerate(RATE)
    wf.writeframes(b''.join(frames))
    wf.close()

# 使用谷歌助手处理音频
def process_audio(filename):
    subprocess.call(['google-assistant-demo', '--audio', filename])

# 主函数
def main():
    filename = 'audio.wav'
    duration = 5  # 录制音频的时长（秒）

    record_audio(filename, duration)
    process_audio(filename)

if __name__ == '__main__':
    main()