Stream format issue when trying to run "run_realtime_auralization.py"

[jeanibarz]

Hello,

I have an issue when trying to run the script "run_realtime_auralization.py", I get the following error:

Traceback (most recent call last):
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2020.2.1\plugins\python-ce\helpers\pydev\pydevd.py", line 1448, in _exec
    pydev_imports.execfile(file, globals, locals)  # execute the script
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2020.2.1\plugins\python-ce\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "C:/Users/ibarz/PyCharmProjects/visr-tutorial-code/python/run_realtime_auralization.py", line 140, in <module>
    optionalConfig=audioInterfaceOptions)
ValueError: The chosen stream format is is not supported by the portaudio interface: Invalid number of channels

The number of inputs is 2 (I believe this is because the renderer simulate 2 virtual loudspeakers) and the number of output is 2.

My default interface seems to be the following:

import sounddevice as sd
sd.query_devices()
   0 Microsoft Sound Mapper - Input, MME (2 in, 0 out)
>  1 Microphone (HD Webcam C525), MME (2 in, 0 out)
   2 Microphone (USB Camera Audio��), MME (2 in, 0 out)
   3 Microphone (3- VIVE Cosmos Mult, MME (2 in, 0 out)
   4 VoiceMeeter Output (VB-Audio Vo, MME (2 in, 0 out)
   5 Microphone (B10), MME (2 in, 0 out)
   6 Microphone (Trust USB microphon, MME (2 in, 0 out)
   7 Microphone (Bigscreen Audio Str, MME (2 in, 0 out)
   8 VoiceMeeter Aux Output (VB-Audi, MME (2 in, 0 out)
   9 Microsoft Sound Mapper - Output, MME (0 in, 2 out)
**< 10 VoiceMeeter Input (VB-Audio Voi, MME (0 in, 2 out)**
  11 Haut-parleurs (Bigscreen Audio , MME (0 in, 2 out)
  12 Digital Audio (S/PDIF) (High De, MME (0 in, 2 out)
  [...]

Of couvre its a playback device so the number of input is 0, and the number of output is correctly 2. Just in case, I tried to switch the number of input to 0 but I get the same error. Do you have any idea to solve this problem ? I don't know at all where to look for....

Thank you very much !

PS: I'm using windows, VoiceMeeter Input is a virtual audio card loopback, recording the audio stream and redirecting it to a physical audio device, hence its name "input", but is working as any playback device. I'm currently using EqualizerAPO to convolve 7.1 virtual loudspeakers configuration into binaural audio, but I would like to switch to VISR to add headtracking feature. So my application case is "Virtual Loudspeaker Rendering/ Binaural Room Scanning".