使用scipy.io.wavfile读取wav文件，然后写入不会复制原始文件

Question

I am trying to work with wav files in Python. I downloaded the SciPy library which supposedly can do the job. To see that it works I'm trying to read a wav file and then write it again to disk. For some reason the new wav file that is created is not similar to the old one.

import scipy.io.wavfile as wav
(rate,sample) = wav.read("/vocal.wav")
wav.write("/temp.wav", rate, sample)

Answer 1

scipy.io.wavfile.write(filename, rate, data) : Writes a simple uncompressed WAV file. (From here )

I suspect that your input file has some kind of compression.

Answer 2

I do not have much experience with SciPy , but according to the documentation of scipy.io.wavfile.write the array do be written is expected to be an array of int type values. While scipy.io.wavfile.read tells that type of the array is determined by the type of data in the file. They may not be the same.

It would be good, to read the written file once again and check if the array read from original contains the same date after conversion to int .