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Convention Paper

Adaptive Wave Field Synthesis for Sound Field Reproduction: Theory, Experiments, and Future Perspectives

Authors: Gauthier, Philippe-Aubert; Berry, Alain

AES Convention 123 · Paper 7300 · October 2007

Abstract

Wave field synthesis is a sound field reproduction technology which assumes that the reproduction environment is anechoic. A real reproduction space thus reduces the objective accuracy of wave field synthesis. Adaptive wave field synthesis is defined as a combination of wave field synthesis and active compensation. With adaptive wave field synthesis the reproduction errors are minimized along with the departure penalty from the wave field synthesis solution. Analysis based on the singular value decomposition connects wave field synthesis, active compensation and "Ambisonics". The decomposition allows the practical implementation
of adaptive wave field synthesis based on independent radiation mode control. Results of experiments in different rooms support the theoretical propositions and show the efficiency of adaptive wave field synthesis for sound field reproduction.

Details

Published in
AES Convention 123
AES Convention
123
Paper number
7300
Publication date
October 6, 2007
Session subject
Signal Processing for 3-D Audio
Affiliation
Université de Sherbrooke (See document for exact affiliation information.)
Type
Convention Paper