Error loading wav

[drone1]

Hi Paul,

I'm trying to run this on MacOS High Sierra 10.13.6. Python 2.7.10.

I've tried a variety of wav files from sample packs and so forth as a test, and have gotten nothing but "Error loading wav..."; I added a bit of code to get more information. Seems I get a ValueError exception, which contains the following: "string size must be a multiple of element size"

It is triggered from this line:

wavedata=scipy.io.wavfile.read(filename)

I can dig further but was hoping you might just have an idea of what might be wrong here.

All I did was clone, copy a wav to the working directory as a.wav, then run:

./paulstretch_stereo.py a.wav b.wav

Full output:

Paul's Extreme Sound Stretch (Paulstretch) - Python version 20141220
by Nasca Octavian PAUL, Targu Mures, Romania

stretch amount = 8
window size = 0.25 seconds
Error loading wav: a.wav
Traceback (most recent call last):
  File "./paulstretch_stereo.py", line 149, in <module>
    (samplerate,smp)=load_wav(args[0])
TypeError: 'NoneType' object is not iterable

[ojczeo]

Fixed it here:
https://github.com/ojczeo/paulstretch_python

[canyondust]

@ojczeo Thank you for updating the script. It seems 24bit causes level problems (clipping) and the script also fails under Python 3.8 (numpy 1.19.4, scipy 1.5.4) with the following error:

"Traceback (most recent call last):
File "./paulstretch_stereo.py", line 153, in
paulstretch(samplerate,smp,options.stretch,options.window_size,args[1])
File "./paulstretch_stereo.py", line 124, in paulstretch
outfile.writeframes(int16(output.ravel(1)*32767.0).tostring())
TypeError: order must be str, not int"

I'll try to fix it myself, but I know nothing about Python. However if you have time, and the fix is easy, it would be beneficial to macOS uses are Python 2 is depricated as of macOS 10.16+

Thanks!

[usworked]

Hi @canyondust
Hope this helps you buddy.. change the output.writeframes line to this:
outfile.writeframes(int16(output.ravel('F')*32767.0).tostring())

[canyondust]

Heyya @usworked I this is such a coincidence you write now, because I hadn't done much with the code until YESTERDAY when I rewrote the IO to use the soundfile library instead of the wavefile library and added 24-bit support as well :)

[Mikec78660]

Wow funny. I just grabbed this utility for a project I was working on. got the same error. "TypeError: order must be str, not int"" Didn't think there was a chance it was still maintained after 9 years and saw the fix. Works great! Thank you for writing this.