MULTI-SPEAKER METHOD AND APPARATUS FOR LEAKAGE CANCELLATION

摘要

Embodiments of systems and methods are described for reducing undesired leakage energy produced by a non-front-facing speaker in a multi-speaker system. For example, the multi-speaker system can include an array of forward-facing speakers, one or more upward-facing speakers, and/or one or more side-facing speakers. Filters coupled to any two of the speakers in the multi-speaker system can generate audio signals output by the coupled speakers to reduce, attenuate, or cancel a portion of an audio signal output by one or more non-front-facing speakers that acoustically propagates along a direct path from the respective non-front-facing speaker to a listening position in a listening area in front of the multi-speaker system.

主权项

1. A multi-speaker system for reducing undesired leakage energy, the multi-speaker system comprising:
a non-front-facing speaker configured to be positioned away from a listening area; a plurality of front-facing speakers configured to be positioned facing the listening area; a processor configured to apply an input audio signal to the non-front-facing speaker, the non-front-facing speaker configured to transmit the input audio signal such that the input audio signal acoustically propagates along a direct path to the listening area; and a plurality of filters, wherein each filter in the plurality of filters corresponds to a front-facing speaker in the plurality of front-facing speakers, and wherein each filter in the plurality of filters is configured to:
generate an attenuating signal, andapply the attenuating signal to a corresponding front-facing speaker, wherein the plurality of attenuating signals collectively attenuate the input audio signal acoustically propagated by the non-front-facing speaker along the direct path to the listening area.