Blind Source Separation and Binaural Reproduction with Hearing Aids: An Overview

Conference: Sprachkommunikation 2008 - 8. ITG-Fachtagung
10/08/2008 - 10/10/2008 at Aachen, Germany

Proceedings: Sprachkommunikation 2008

Pages: 4Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Wehr, S.; Puder, H. (Siemens Audiologische Technik GmbH, Research & Development Signal Processing (RD SP), Gebbertstraße 125, 91058 Erlangen, Germany)
Kellermann, W. (Universität Erlangen-Nürnberg, Lehrstuhl für Multimediakommunikation und Signalverarbeitung (LMS), Cauerstraße 7, 91058 Erlangen, Germany)

This paper addresses the problem of recovering or preserving spatial cues after microphone array processing by blind source separation. Based on the inherent identification of the unknown mixing system by blind source separation, we present several kinds of binaural reproduction algorithms. Firstly, we use the approximated mixing system for binaural reproduction by post-filtering. We are thus able to recover the spatial cues of the target source. Unfortunately, attenuated interfering sources are perceived from the direction of the target source. In order to achieve spatially correct binaural reproduction of interfering sources, we consider an adaptive post-processing algorithm.