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Convention Paper

Loudspeaker Localization Based on Audio Watermarking

Authors: Kolbeck, Florian; Del Galdo, Giovanni; Sobieraj, Iwona; Bliem, Tobias

AES Convention 133 · Paper 8730 · October 2012

Abstract

Localizing the positions of loudspeakers can be useful in a variety of applications, above all the calibration of a home theater setup. For this aim, several existing approaches employ a microphone array and specifically designed signals to be played back by the loudspeakers, such as sine sweeps or maximum length sequences. While these systems achieve good localization accuracy, they are unsuitable for those applications in which the end-user should not be made aware that the localization is taking place. This contribution proposes a system that fulfills these requirements by employing an inaudible watermark to carry out the localization. The watermark is specifically designed to work in reverberant environments. Results from realistic simulations confirm the practicability of the proposed system.

Details

Published in
AES Convention 133
AES Convention
133
Paper number
8730
Publication date
October 6, 2012
Session subject
Amplifiers, Transducers, and Equipment
Affiliation
Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany (See document for exact affiliation information.)
Type
Convention Paper