[Openal] Binaural recording + virtual 3D sound source + CMSS-3D

[Francois Montignies]

Hi, 

I would be really happy if someone could tell me if it is possible to deal with binaural recordings as background sound environments.
I work for a research project in which we only use headphones reproduction. Binaural recording is therefore a solution to have a realistic sound environment. We would like to add a virtual speaker with 3D coordinates that we can vary.

In my OpenAL source code I have :
- a stereo buffer for the binaural source (no spatialization with OpenAL) 
- a mono buffer for the virtual source (3D definition with OpenAL)

Problem is :
When I enable Headphones CMSS-3D it adds a processing artifact on my binaural recordings. I think it might be a cross-feed algorythm.

Two questions :

- Is there a way to keep my original binaural track (that means left channel to left ear, right channel to right ear) and add a 3D source with CMMSS-3D "On" ?
- What would be the result if I turn off CMSS-3D and only select "headphones" reproduction, do I lose the HRTF for the virtual 3D speaker ?


Thanks for any help,

Francois,

HITlabNZ

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