本文为大家分享了python实现录音小程序的具体代码，供大家参考，具体内容如下
学习目标：掌握python的pyaudio扩展包和Wave模块录制语音的方法
- Wav音频:声道数，采样频率，量化位数
python Wav包是自带的，pyaudio需要下载
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pip3 install pyaudio |
python读Wav文件：
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fp=wave.open('','rb') nf=fp.getnframes()#获取文件的采样点数量 print('sampwidth:',fp.getsampwidth()) print('framerate:',fp.getframerate()) print('channels:',fp.getnchannels()) f_len=nf*2#文件长度计算，每个采样2个字节 audio_data=fp.readframes(nf) |
python写Wav文件：
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def save_wave_file(filename,data): '''save the date to the wavfile''' wf=wave.open(filename,'wb') wf.setnchannels(channels)#声道 wf.setsampwidth(sampwidth)#采样字节 1 or 2 wf.setframerate(framerate)#采样频率 8000 or 16000 wf.writeframes(b"".join(data))#https://stackoverflow.com/questions/32071536/typeerror-sequence-item-0-expected-str-instance-bytes-found wf.close() |
利用PyAudio录音：
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def my_record(): pa=PyAudio() stream=pa.open(format = paInt16,channels=1, rate=framerate,input=True, frames_per_buffer=NUM_SAMPLES) my_buf=[] count=0 while count<TIME*20:#控制录音时间 string_audio_data = stream.read(NUM_SAMPLES)#一次性录音采样字节大小 my_buf.append(string_audio_data) count+=1 print('.') save_wave_file('01.wav',my_buf) stream.close() |
利用PyAudio播放音频
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chunk=2014def play(): wf=wave.open(r"01.wav",'rb') p=PyAudio() stream=p.open(format=p.get_format_from_width(wf.getsampwidth()),channels= wf.getnchannels(),rate=wf.getframerate(),output=True) while True: data=wf.readframes(chunk) if data=="":break stream.write(data) stream.close() p.terminate() |
完整录音播放的demo
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import wavefrom pyaudio import PyAudio,paInt16framerate=8000NUM_SAMPLES=2000channels=1sampwidth=2TIME=2def save_wave_file(filename,data): '''save the date to the wavfile''' wf=wave.open(filename,'wb') wf.setnchannels(channels) wf.setsampwidth(sampwidth) wf.setframerate(framerate) wf.writeframes(b"".join(data)) wf.close()def my_record(): pa=PyAudio() stream=pa.open(format = paInt16,channels=1, rate=framerate,input=True, frames_per_buffer=NUM_SAMPLES) my_buf=[] count=0 while count<TIME*20:#控制录音时间 string_audio_data = stream.read(NUM_SAMPLES) my_buf.append(string_audio_data) count+=1 print('.') save_wave_file('01.wav',my_buf) stream.close()chunk=2014def play(): wf=wave.open(r"01.wav",'rb') p=PyAudio() stream=p.open(format=p.get_format_from_width(wf.getsampwidth()),channels= wf.getnchannels(),rate=wf.getframerate(),output=True) while True: data=wf.readframes(chunk) if data=="":break stream.write(data) stream.close() p.terminate()if __name__ == '__main__': my_record() print('Over!') play() |
更多用法详见 pyaudio文档
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/yexiaohhjk/article/details/73132562
