On the influence of loudspeaker and microphone array geometries on the limits for listening room equalization in a spatial continuum

Conference contribution


Publication Details

Author(s): Schneider M, Kellermann W
Publishing place: Merano, Italy
Publication year: 2013
Pages range: 2360-2363
ISBN: 978-3-9392-9605-8
Language: English


Abstract

In audio reproduction, loudspeaker signals are often optimized to be ideally rendered under free-field conditions.
In real reverberant listening rooms a listening room
equalization (LRE) system may be used to improve to
reproduction quality by removing the undesired reverberation. To this end, additional microphones are placed
in the listening room and the resulting loudspeakerenclosure-microphone system (LEMS) is then identified
to determine equalizing pre-filters for the loudspeaker
signals. As the listener position may vary, an equalization
in a spatially extended zone is desired as it was already
considered in early work on LRE [1]. Later work involved
systematically placed loudspeakers and microphones to
improve the LRE in a spatially extended zone [2, 3]. It
turned out that loudspeaker arrays used for wave field
synthesis (WFS) [4] or Higher-Order Ambisonics (HOA)
[5] allow for a sufficient control over the reproduced
wave field to equalize a spatially extended zone in
a corresponding frequency area. Microphone arrays
designed for wave field analysis allow for a description
of a wave field in an extended zone and are therefore
attractive candidates to complement the WFS or HOA
loudspeaker arrays in an LRE system. However, a
spatially extended equalization can only be achieved
for wave field components which may be measured and
controlled at the same time. In this contribution,
some combinations of differently shaped loudspeaker and
microphone arrays are analyzed with respect to their
suitability for LRE.


FAU Authors / FAU Editors

Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik
Schneider, Martin
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


How to cite

APA:
Schneider, M., & Kellermann, W. (2013). On the influence of loudspeaker and microphone array geometries on the limits for listening room equalization in a spatial continuum. In Proceedings of the AIA-DAGA Conference on Acoustics (pp. 2360-2363). Merano, IT: Merano, Italy.

MLA:
Schneider, Martin, and Walter Kellermann. "On the influence of loudspeaker and microphone array geometries on the limits for listening room equalization in a spatial continuum." Proceedings of the AIA-DAGA Conference on Acoustics, Merano Merano, Italy, 2013. 2360-2363.

BibTeX: 

Last updated on 2019-25-04 at 17:53