INTERSPEECH 2004 - ICSLP
This paper addresses the problem of accurately realizing the interpolation of spatially discrete head-related transfer function (HRTF) for synthesis of virtual auditory space. By analyzing the advantages and disadvantages of general bilinear interpolation method in 3D-sound, associating with human auditory system's mechanism of band-pass filtering and consulting critical bands of psychoacoustics, the paper presents a piecewise interpolation method based on log-least square error criterion for HRTF's magnitude to compensate the deficiency of bilinear method in intermediate frequency. As seen from the following simulations, this new method accomplishes preferable results.
Bibliographic reference. Zhang, Jie / Wu, Zhenyang (2004): "A piecewise interpolation method based on log-least square error criterion for HRTF", In INTERSPEECH-2004, 2457-2460.