Fixed versus correlation-adaptive LMS acoustic narrowband arrays for hearing enhancement

Author

McKinney, Elaine D. ; DeBrunner, Victor E.

Author_Institution

Sch. of Electr. Eng., Oklahoma Univ., Norman, OK, USA

fYear

1992

Firstpage

571

Abstract

The authors compare the performance of two-element and four-element correlation-adaptive least-mean-square (LMS) narrowband arrays versus fixed array designs in the presence of spatially separated noise sources. These arrays are designed to fit on the human head in an unobtrusive manner. Head shadow (acoustic occlusion) modeling is included. The directionality of the fixed beamformers is shown to be superior to the directionality of the adaptive beamformers, and additional processing techniques which can `directionalize´ these few-element arrays are proposed

Keywords

acoustic arrays; acoustic signal processing; antenna phased arrays; correlation methods; hearing aids; acoustic occlusion; correlation-adaptive LMS acoustic narrowband arrays; fixed array; head shadow modelling; hearing aids; hearing enhancement; spatially separated noise sources; Acoustic arrays; Acoustic noise; Acoustic sensors; Adaptive arrays; Auditory system; Least squares approximation; Narrowband; Noise reduction; Sensor arrays; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1992. 1992 Conference Record of The Twenty-Sixth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

0-8186-3160-0

Type

conf

DOI

10.1109/ACSSC.1992.269207

Filename

269207