运用Python——使用wave & pyaudio录音

一、编程之前

需要pip install wave和安装pyaudio库，开启麦克风
pyaudio安装经常出错的，参考以下教程

–>pyaudio安装错误解决方法<–

二、使用wave & pyaudio录音

import wave,pyaudio

#设定采样率、16位深度、声道、数据包大小、录制长度
RATE = 16000
FORMAT = pyaudio.paInt16
CHANNELS = 2
CHUNK = 1024
#实际录制长度=设置长度-1
RECODE_SECONDS = 5

def recode_fn(filename):
    p = pyaudio.PyAudio()
    #打开流
    stream = p.open(format=FORMAT,channels=CHANNELS,rate=RATE,input=True,frames_per_buffer=CHUNK)
    frames = []
    #音频写入列表
    for i in range(int(RATE / CHUNK * RECODE_SECONDS)):
        data = stream.read(CHUNK)
        frames.append(data)
    stream.stop_stream()
    stream.close()
    p.terminate()

	#读取列表写入文件
    wf=wave.open(filename,"wb")
    wf.setnchannels(CHANNELS)
    wf.setsampwidth(p.get_sample_size(FORMAT))
    wf.setframerate(RATE)
    #防止出现空数据
    wf.writeframes(b"".join(frames))
    wf.close()

if __name__ == "__main__"
	recode_fn("demo.wav")

完

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