Patent ID: 11869477
Assignee: BOSE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A non-transitory storage medium comprising program code that, when executed by a processor, carries out the steps of:
generating, with a noise-cancellation filter, a noise-cancellation signal;
setting a first scaling gain of an amplifier disposed between the noise-cancellation filter and at least one speaker to less than unity in response to a signal representative of the noise-cancellation signal exceeding a threshold;
applying, with the amplifier, the first scaling gain to a current sample of the noise-cancellation signal such that the scaled noise-cancellation signal is a linear reduction of the current sample of the noise-cancellation signal; and
outputting the scaled noise-cancelation signal to at least one speaker, wherein, the scaled noise-cancellation signal, when actuated by the at least one speaker, cancels noise within at least one cancellation zone, wherein the signal representative of the noise-cancellation signal is the scaled noise-cancellation signal from a previous sample of the noise-cancellation signal, wherein the threshold is the threshold of a limiter disposed between the amplifier and the at least one speaker.