DSP implementation of low computational 3D sound localization algorithm

Author

Sakamoto, Noriaki ; Kobayashi, Wataru ; Onoye, Takao ; Shirakawa, Isao

Author_Institution

Dept. Inf. Syst. Eng., Osaka Univ., Japan

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

109

Lastpage

116

Abstract

This paper describes a DSP implementation of a real-time 3D sound localization algorithm. A distinctive feature of this implementation is that the audible frequency band is divided into three on the basis of the analysis of the effects of sound diffraction, such that in these three subbands specific schemes of the 3D sound localization are devised with the use of an IIR filter, three parametric equalizers, and a comb filter, respectively, so as to be run real-time on a 16-bit fixed-point DSP at a low frequency of 50 MHz, maintaining the high-quality sound localization. As a result, this 3D sound localization scheme can be applied to mobile applications such as headphones and a handy-phone with the use of an embedded DSP

Keywords

IIR filters; acoustic signal processing; audio signal processing; comb filters; digital signal processing chips; equalisers; headphones; telephone sets; 16 bit; 50 MHz; DSP implementation; HRTF; IIR filter; TMS320C54x; acoustic signal processing; audible frequency band; comb filter; embedded DSP; fixed-point DSP; handy-phone; head-related transfer function; headphones; mobile applications; parametric equalizers; real-time 3D sound localization algorithm; sound diffraction effects; subbands; Acoustic diffraction; Acoustical engineering; Digital filters; Digital signal processing; Ear; Equalizers; Frequency conversion; Humans; IIR filters; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 2001 IEEE Workshop on

Conference_Location

Antwerp

ISSN

1520-6130

Print_ISBN

0-7803-7145-3

Type

conf

DOI

10.1109/SIPS.2001.957336

Filename

957336