Open Access

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

  • H. Kayser1Email author,
  • S. D. Ewert1,
  • J. Anemüller1,
  • T. Rohdenburg1,
  • V. Hohmann1 and
  • B. Kollmeier1
EURASIP Journal on Advances in Signal Processing20092009:298605

DOI: 10.1155/2009/298605

Received: 15 December 2008

Accepted: 4 June 2009

Published: 16 July 2009

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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Authors’ Affiliations

(1)
Medizinische Physik, Universität Oldenburg

Copyright

© H. Kayser et al. 2009

This article is published under license to BioMed Central Ltd. 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.

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