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TitleAn algorithm for power constrained holographic reproduction of sound
Publication TypeConference Paper
Year of Publication2010
AuthorsTeal, P.D., Betlehem T., and Poletti M.A.
Conference NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Date Published2010
KeywordsAcoustic field measurement, Acoustic fields, Interior point methods, Loudspeakers, Output power, Peak power, Power constraints, Signal processing, Single frequency, Sound field reproduction, Sound fields, Spatial regions
AbstractThe reproduction of a sound field over a spatial region can require large output powers from the loudspeakers. In such a case, the sound field reproduction can be non-robust or cause loudspeaker failure. One method of limiting loudspeaker power is to regularize the solution. We instead assume each loudspeaker is capable of delivering a certain peak power, and find a solution minimizing the error between the created and desired field subject to this power constraint. We apply a power constraint at a single frequency and also constrain total output power summed across many frequencies. Rapidly converging interior point methods are derived and shown to possess similar robustness to the regularized solution. ©2010 IEEE.

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