Head-Related Impulse Response Interpolation in Virtual Sound System

Abstract

In order to obtain some head-related impulse responses (HRIRs) not measured in virtual sound system, a real-time interpolation method based on the minimum-phase reconstruction is proposed in this article. The method is composed of three steps: firstly, the original HRIRs are preprocessed and separated into two parts: a minimum-phase reconstruction version and the corresponding inter-aural time difference (ITD); secondly, each part is interpolated by using the simple linear interpolation; finally, the interpolated HRIR is obtained from the above two parts. The simulation experiments show that compared with two typical real-time interpolations algorithms used in the virtual sound system, the proposed method decreases the interpolation error and reduces the computational complexity.

Azimuth-dependent spatialization for a teleconference audio display

“…To better utilize the available auditory space we generated HRTFs for azimuths that are 1° apart. We made use of the interpolation technique mentioned in [12] to generate HRTF for those azimuths for which standard HRTFs are not available. In this approach, the available HRTFs are converted into their minimum-phase versions and the corresponding Interaural Time Delays (ITDs).…”