A modified crosspower spectrum phase method

Author

Xiaohong, Ma ; Lili, Liang ; Fuliang, Vn

Author_Institution

Sch. of Electron. & Inf. Eng., Dalian Univ. of Technol., China

Volume

2

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

1318

Abstract

The crosspower spectrum phase (CSP) is a well known time delay estimation method. The relatively precise time difference of arrival (TDOA) can be achieved by using it in the presence of weak noise and medium reverberation. The performance degrades dramatically in the case of low SNR and strong reverberation. A modified CSP (M/spl I.bar/CSP) method is proposed in order to improve the performance of CSP. The weighting function of M/spl I.bar/CSP changes with the variation of SNR, and the TDOA estimation is accomplished via a weighted of multi-frames. The computer simulation results indicate that the proposed method can give satisfying value of TDOA even in the case of low SNR and strong reverberation.

Keywords

delay estimation; direction-of-arrival estimation; noise (working environment); reverberation; computer simulation; crosspower spectrum phase method; medium reverberation; signal to noise ratio; strong reverberation; time delay estimation method; time difference of arrival estimation; weak noise; weighting function; Acoustic noise; Attenuation; Degradation; Delay effects; Delay estimation; Mathematical model; Microphone arrays; Reverberation; Signal to noise ratio; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on

Conference_Location

Nanjing

Print_ISBN

0-7803-7702-8

Type

conf

DOI

10.1109/ICNNSP.2003.1281114

Filename

1281114