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Acoustic measurement system for 3D loudspeaker set-ups

: Silzle, A.; Lang, M.; Pineda Pardo, J.A.; Thiergart, O.; Galdo, G. del

Audio Engineering Society -AES-:
40th International AES Conference: Spatial Audio - Sense the Sound of Space. CD-ROM : Tokyo, October 8-10th, 2010
New York, NY: AES, 2011
Paper P-6
International Conference on Spatial Audio "Sense the Sound of Space" <40, 2010, Tokyo>
Conference Paper
Fraunhofer IIS ()

For any reproducible listening set-up it is crucial to verify whether the reproduction system is operating properly. This is a tedious and cumbersome task, as state-of-the-art listening rooms are equipped with intricate signal processing chains and a higher number of loudspeakers arranged at very specific positions. Building an automatic test-system with an adequate accuracy and reliability represents a rather challenging engineering problem. This contribution presents a multi-loudspeaker test-system, which accomplishes this task, realized by carefully combining existing measurement techniques. The thorough validation of the developed test-system indicates an accuracy in determining the position of ±3°, the distance of ±4 cm, and the magnitude response of ±1 dB, for each loudspeaker in the listening room with a total measurement time of less than 10 s per loudspeaker.