Comparison of microphone array designs for hearing aid

Author

Korompis, D. ; Wang, A. ; Yao, K.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

4

fYear

1995

fDate

9-12 May 1995

Firstpage

2739

Abstract

We perform simulation of various digital signal processing microphone array architectures to compare their suitability for a hearing aid pre-processor. The architectures include fixed narrowband array, general sidelobe canceler array and maximum energy array. The arrays are all equi-spaced linear array. In particular, arrays with 6 microphones and various number of taps have been simulated under typical hearing aid environment of reverberance, short speaker distance and competing speakers. The sampling frequency is chosen to be 10 kHz, with the physical length of the array being 17 cm. The improvements of various array designs are demonstrated and discussed

Keywords

acoustic arrays; acoustic signal processing; hearing aids; microphones; reverberation; signal sampling; 10 kHz; 17 cm; array length; competing speakers; digital signal processing microphone array; equi-spaced linear array; fixed narrowband array; general sidelobe canceler array; hearing aid environment; hearing aid pre-processor; maximum energy array; microphone array designs; reverberance; sampling frequency; short speaker distance; simulation; Acoustic arrays; Auditory system; Azimuth; Delay; Digital signal processing; Frequency; Microphone arrays; Narrowband; Power generation; Sampling methods; Sensor arrays; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.480128

Filename

480128