python实现录音小程序

本文为大家分享了python/' target='_blank'>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

python Wav包是自带的，pyaudio需要下载

pip3 install pyaudio

python读Wav文件：

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：

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：

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

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

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脚本之家。