Title :
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
fDate :
Oct. 30 2005-Nov. 2 2005
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;
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
DOI :
10.1109/MMSP.2005.248685
