Patent ID: 9020158
Filing Date: 2015-04-28
Classification: G10K

Abstract:
1. A non-transitory computer-readable medium comprising a plurality of instructions executable by a processor to create a quiet zone in a listening area, the non-transitory computer-readable medium comprising: instructions to determine a first filter adjustment based on a first error signal indicative of an undesired sound in a first listening region included in the listening area; instructions to determine a second filter adjustment based on a second error signal indicative of the undesired sound in a second listening region included in the listening area; instructions to set and apply a first weighing factor to the first filter adjustment, and set and apply a second weighting factor to the second filter adjustment, the first and second weighting factors set to values selected from a plurality of non-zero incremental values; and instructions to update a set of filter coefficients of an adaptive filter based on the first weighted filter adjustment and the second weighted filter adjustment, the adaptive filter configured to generate an anti-noise signal to destructively interfere with the undesired sound to create the quiet zone.