Acoustical Science and Technology
Online ISSN : 1347-5177
Print ISSN : 1346-3969
ISSN-L : 0369-4232
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Robust transaural sound reproduction system based on feedback control
Toshiya SamejimaYo SasakiIzumi TaniguchiHiroyuki Kitajima
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2010 Volume 31 Issue 4 Pages 251-259

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Abstract
We present a new method for implementing transaural sound reproduction systems by using feedback control theory. The H control theory is employed to synthesize the feedback controller. The structure of the sound reproduction system is formulated such that the H norm of the system transfer function, which is to be minimized with feedback control, expresses the difference between the desired signals and the acoustic signals reproduced at the ears of a listener via loudspeakers. Modeling errors and plant perturbations resulting from the movement of the listener’s head are also taken into account to ensure robust stability. Computer simulations indicate that the equalization and cross-talk cancellation by the proposed method are better preserved for deviations in position than are those by the conventional inverse filtering method.
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© 2010 by The Acoustical Society of Japan
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