using spaudiopy to generate spherical harmonics for resonanceaudio for another hrtf dataset

[brightening-eyes]

hello,
I would like to use another hrtf dataset in resonanceaudio other than its default one.
can you guide me on how would I use spaudiopy to read and create spherical harmonics for resonanceaudio?
it has some matlab scripts, but its just for its default dataset.
for example for mit kemar, data, how can I process it into spherical harmonic wavs?
thanks.

[chris-hld]

I am not familiar with that SDK. Is it possible to use the SOFA file format for loading HRTFs? Then it would be quite straight forward to load other HRTFs.
Maybe someone more familiar with the resonance SDK could chime in here?

[trsonic]

Hey, this sounds like something I'm familiar with.

Resonance Audio HRIRs are embedded into the source code (see hrtf_assets.h).

The source code can be generated using generate_hrtf_assets.py. It takes SH-decomposed HRIRs saved as multichannel .wav files. The filters need to be ACN/SN3D compliant. Only 1st, 2nd and 3rd order filters are supported. Resonance Audio assumes head symmetry, therefore only left ear data should be provided.

So to replace the original filters.... load a .sofa file, calculate MagLS filters (probably the most reasonable choice), sort out normalisation, save left ear data into a multichannel .wav file (48 kHz / 16 bit). Proceed with the Python workflow, replace the source files and recompile the project.