It looks like the coordinates in FMOD_3D_HEADRELATIVE aren’t affected by FMOD_INIT_3D_RIGHTHANDED.
I’m testing a sound that I’ve placed on the left in WORLD RELATIVE mode. I can flip the sound between left & right via FMOD_INIT_3D_RIGHTHANDED and it behaves as expected (i.e., which direction +X is will change with a LH vs. RH coord system).
When I do the same with HEAD RELATIVE mode (i.e., place it to the left of the listener),
flipping FMOD_INIT_3D_RIGHTHANDED has no effect.
I was wondering if this was known and/or if anyone else has experienced this.