如何使用 wavio api 从数据中写入.wav 文件

Question

I'm using WAVIO python API to write data to a.wav file. In order to test this api, First I read data.wav file and then I want to generate.wav containing the same data of the input.wav file, but I got an error while writing data to the output wav file.

import numpy as np
import wavio

wa = wavio.read("s24.wav")  #Read a .wav file
print("x= "+str(wa.data))   #Data
print("rate= "+str(wa.rate))    #Rate
print("sampwidth= "+str(wa.sampwidth))  #sampwidth
wavio.write("sine24_output", wa.data, wa.rate,wa.sampwidth)   #Error is here

Error is:

Traceback (most recent call last):

  File "C:/Users/user/Desktop/Wav2Bytes/wavii.py", line 24, in <module>
    wavio.write("sine24_output", wa.data, wa.rate,wa.sampwidth)   #Write a .wav file. Error is here
  File "C:\Program Files (x86)\Python\lib\site-packages\wavio.py", line 363, in write
    vmin, vmax = scale
TypeError: cannot unpack non-iterable int object

Answer 1

You are missing the argument's name sampwidth . According to the docs , there are 5 arguments, if you don't specify the name sampwidth , it will instead set scale to wa.sampwidth . Anyway just use this:

wavio.write("sine24_output", wa.data, wa.rate,sampwidth=wa.sampwidth)