Low-frequency trick to improve externalization with HRIRs
* Presenting author
For headphone rendering of sounds in virtual acoustic environments, we know that externalization as perfect auditory illusion benefits from individual HRIRs, dynamic rendering with head tracking, from avoiding the room divergence effect, and therefore also from rendering a natural acoustical room. And yet in many cases, it is impossible to implement all of these steps, but simple tricks prove to be useful.Low frequency content often impedes a successful illusion of external sounds, that is why one could just remove them by a high-pass filter. While this may be acceptable in applications supporting speech communication, it is inacceptable in audio application. In this contribution we propose to keep, but decorrelate low frequencies to improve externalization, and we compare the result to the high-pass and studio-auralization reference cases in a listening experiment.