python实现录音小程序

2023-09-08 13:41:05 54

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)

defsave_wave_file(filename,data): '''savethedatetothewavfile''' wf=wave.open(filename,'wb') wf.setnchannels(channels)#声道 wf.setsampwidth(sampwidth)#采样字节1or2 wf.setframerate(framerate)#采样频率8000or16000 wf.writeframes(b"".join(data))#https://stackoverflow.com/questions/32071536/typeerror-sequence-item-0-expected-str-instance-bytes-found wf.close()

defmy_record(): pa=PyAudio() stream=pa.open(format=paInt16,channels=1, rate=framerate,input=True, frames_per_buffer=NUM_SAMPLES) my_buf=[] count=0 whilecount

利用PyAudio播放音频

chunk=2014
defplay():
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)
whileTrue:
data=wf.readframes(chunk)
ifdata=="":break
stream.write(data)
stream.close()
p.terminate()

完整录音播放的demo

importwave
frompyaudioimportPyAudio,paInt16

framerate=8000
NUM_SAMPLES=2000
channels=1
sampwidth=2
TIME=2
defsave_wave_file(filename,data):
'''savethedatetothewavfile'''
wf=wave.open(filename,'wb')
wf.setnchannels(channels)
wf.setsampwidth(sampwidth)
wf.setframerate(framerate)
wf.writeframes(b"".join(data))
wf.close()

defmy_record():
pa=PyAudio()
stream=pa.open(format=paInt16,channels=1,
rate=framerate,input=True,
frames_per_buffer=NUM_SAMPLES)
my_buf=[]
count=0
whilecount
更多用法详见pyaudio文档
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python实现录音小程序

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