声波识别新购活动

import pyaudio
import wave

def record_audio(filename, duration=5):
    chunk = 1024
    format = pyaudio.paInt16
    channels = 1
    rate = 44100
    record_seconds = duration
    output_filename = filename

    audio = pyaudio.PyAudio()

    stream = audio.open(format=format, channels=channels,
                        rate=rate, input=True,
                        frames_per_buffer=chunk)

    print("Recording...")

    frames = []

    for i in range(0, int(rate / chunk * record_seconds)):
        data = stream.read(chunk)
        frames.append(data)

    print("Recording finished.")

    stream.stop_stream()
    stream.close()
    audio.terminate()

    wf = wave.open(output_filename, 'wb')
    wf.setnchannels(channels)
    wf.setsampwidth(audio.get_sample_size(format))
    wf.setframerate(rate)
    wf.writeframes(b''.join(frames))
    wf.close()

record_audio('output.wav', 5)