python波形_Python波形字节d

从该文件：The sample points that are meant to be "played" ie, sent to a Digital to Analog Converter(DAC) simultaneously are collectively called a sample frame. In the example of our stereo waveform, every two sample points makes up another sample frame. This is illustrated below for that stereo example.sample sample sample

frame 0 frame 1 frame N

_____ _____ _____ _____ _____ _____

| ch1 | ch2 | ch1 | ch2 | . . . | ch1 | ch2 |

|_____|_____|_____|_____| |_____|_____|

_____

| | = one sample point

|_____|

要转换成单声道，你可以这样做import wave

def stereo_to_mono(hex1, hex2):

"""average two hex string samples"""

return hex((ord(hex1) + ord(hex2))/2)

wr = wave.open('piano2.wav','r')

nchannels, sampwidth, framerate, nframes, comptype, compname = wr.getparams()

ww = wave.open('piano_mono.wav','wb')

ww.setparams((1,sampwidth,framerate,nframes,comptype,compname))

frames = wr.readframes(wr.getnframes()-1)

new_frames = ''

for (s1, s2) in zip(frames[0::2],frames[1::2]):

new_frames += stereo_to_mono(s1,s2)[2:].zfill(2).decode('hex')

ww.writeframes(new_frames)

从立体声到单声道没有明确的方法。你可以放下一个频道。上面，我是平均频道。这取决于你的申请。