Binaural Multi-Channel Wiener Filtering for Hearing Aids: Preserving Interaural Time and Level Differences

Author

Klasen, Thomas J. ; Doclo, Simon ; Van Den Bogaert, Tim ; Moonen, Marc ; Wouters, Jan

Author_Institution

Dept. of Electr. Eng., Katholieke Univ. Leuven

Volume

5

fYear

2006

fDate

14-19 May 2006

Abstract

This paper presents an extension of the binaural multi-channel Wiener filtering algorithm discussed in T.J. Klasen et al. (2005). The goal of this paper is to preserve both the interaural time difference (ITD) and interaural level difference (ILD) of the speech and noise components. This is done by extending the cost function to incorporate terms for the interaural transfer functions (ITF) of the speech and noise components. Using weights, the emphasis on the preservation of the ITFs can be controlled in addition to the emphasis on noise reduction. Adapting these parameters allows one to preserve the ITFs of the speech and noise component, and therefore ITD and ILD cues, while enhancing the signal-to-noise ratio

Keywords

Wiener filters; filtering theory; hearing aids; matrix algebra; medical signal processing; speech processing; binaural multichannel Wiener filtering; hearing aids; interaural level difference; interaural time difference; interaural transfer functions; noise components; noise reduction; signal-to-noise ratio; speech components; Acoustic noise; Auditory system; Cost function; Ear; Hearing aids; Laboratories; Noise reduction; Signal to noise ratio; Speech enhancement; Wiener filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1661233

Filename

1661233