A computer-readable medium comprising a plurality of instructions executable by a processor to create independent quiet zones (102, 342, 402), each comprising one or more listening regions, in a listening area, the computer-readable medium comprising: instructions to retrieve a first set of weighting factors and a second set of weighting factors, the first set of weighting factors configured to establish a first location and size of a first quiet zone (102, 342, 402) in the listening area, and the second set of weighting factors configured to establish a second location and size of a second quiet zone (102, 342, 402) in the listening area; instructions to calculate a first filter adjustment based on undesired sound (514, 516) and a first error signal (550, 720) received from a first listening region included in the listening area; instructions to calculate a second filter adjustment based on the undesired sound (514, 516) and a second error signal (558, 720) received from a second listening region included in the listening area; instructions to apply the first set of weighting factors to the first filter adjustment and the second filter adjustment to update a first adaptive filter, the first adaptive filter configured to generate a first anti-noise signal (524, 704) to destructively interfere with the undesired sound (514, 516) to produce the first quiet zone (102, 342, 402); and instructions to apply the second set of weighting factors to the first filter adjustment and the second filter adjustment to update a second adaptive filter, the second adaptive filter configured to generate a second anti-noise signal (526, 704) to destructively interfere with the undesired sound (514, 516) to produce the second quiet zone (102, 342, 402). instructions to retrieve a first set of weighting factors and a second set of weighting factors, the first set of weighting factors configured to establish a first location and size of a first quiet zone (102, 342, 402) in the listening area, and the second set of weighting factors configured to establish a second location and size of a second quiet zone (102, 342, 402) in the listening area; instructions to calculate a first filter adjustment based on undesired sound (514, 516) and a first error signal (550, 720) received from a first listening region included in the listening area; instructions to calculate a second filter adjustment based on the undesired sound (514, 516) and a second error signal (558, 720) received from a second listening region included in the listening area; instructions to apply the first set of weighting factors to the first filter adjustment and the second filter adjustment to update a first adaptive filter, the first adaptive filter configured to generate a first anti-noise signal (524, 704) to destructively interfere with the undesired sound (514, 516) to produce the first quiet zone (102, 342, 402); and instructions to apply the second set of weighting factors to the first filter adjustment and the second filter adjustment to update a second adaptive filter, the second adaptive filter configured to generate a second anti-noise signal (526, 704) to destructively interfere with the undesired sound (514, 516) to produce the second quiet zone (102, 342, 402).