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This article is part of the series Digital Signal Processing for Hearing Instruments.

Open Access Research Article

Database of Multichannel In-Ear and Behind-the-Ear Head-Related and Binaural Room Impulse Responses

H Kayser*, S D Ewert, J Anemüller, T Rohdenburg, V Hohmann and B Kollmeier

Author Affiliations

Medizinische Physik, Universität Oldenburg, 26111 Oldenburg, Germany

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EURASIP Journal on Advances in Signal Processing 2009, 2009:298605  doi:10.1155/2009/298605


The electronic version of this article is the complete one and can be found online at: http://asp.eurasipjournals.com/content/2009/1/298605


Received:15 December 2008
Accepted:4 June 2009
Published:16 July 2009

© 2009 The Author(s).

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An eight-channel database of head-related impulse responses (HRIRs) and binaural room impulse responses (BRIRs) is introduced. The impulse responses (IRs) were measured with three-channel behind-the-ear (BTEs) hearing aids and an in-ear microphone at both ears of a human head and torso simulator. The database aims at providing a tool for the evaluation of multichannel hearing aid algorithms in hearing aid research. In addition to the HRIRs derived from measurements in an anechoic chamber, sets of BRIRs for multiple, realistic head and sound-source positions in four natural environments reflecting daily-life communication situations with different reverberation times are provided. For comparison, analytically derived IRs for a rigid acoustic sphere were computed at the multichannel microphone positions of the BTEs and differences to real HRIRs were examined. The scenes' natural acoustic background was also recorded in each of the real-world environments for all eight channels. Overall, the present database allows for a realistic construction of simulated sound fields for hearing instrument research and, consequently, for a realistic evaluation of hearing instrument algorithms.

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