Optimized Directional Processing in Hearing Aids with Integrated Spatial Noise Reduction

Conference: IWAENC 2012 - International Workshop on Acoustic Signal Enhancement
09/04/2012 - 09/06/2012 at Aachen, Germany

Proceedings: IWAENC 2012

Pages: 4Language: englishTyp: PDF

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Puder, Henning; Fischer, Eghart; Hain, Jens (Siemens Audiologische Technik GmbH, Gebbertstrasse 125, 91058 Erlangen, Germany)

In this paper we present an optimized differential beamformer combined with a spatial noise reduction for small apertures such as in hearing aids. The frequency domain solution of the differential beamformer allows an optimized noise interference suppression with an adaptive masking of microphone noise. The spatial noise reduction utilizes a beamformer signal for interference estimation. Thus it is possible to suppress all kinds of interfering components outside the look direction by an optimal integration into the classic Wiener ??lter noise reduction procedure. Index Terms — Hearing Aids, Beamforming, Noise Reduction