A Piecewise Interpolation Method Based on Log-Least Square Error Criterion for HRTF

Author

Zhang, Jie ; Wu, Zhenyang

Author_Institution

Dept. of Radio Eng., Southeast Univ., Nanjing

fYear

2005

fDate

Oct. 30 2005-Nov. 2 2005

Firstpage

1

Lastpage

4

Abstract

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

Keywords

acoustic signal processing; band-pass filters; hearing; interpolation; least squares approximations; transfer functions; head-related transfer function; log-least square error criterion; piecewise interpolation method; spatial discrete HRTF; virtual auditory space synthesis; Acoustic measurements; Auditory system; Azimuth; Ear; Frequency; Humans; Interpolation; Pollution measurement; Position measurement; Transfer functions; HRTF; interpolation;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Signal Processing, 2005 IEEE 7th Workshop on

Conference_Location

Shanghai

Print_ISBN

0-7803-9288-4

Electronic_ISBN

0-7803-9289-2

Type

conf

DOI

10.1109/MMSP.2005.248685

Filename

4013957