Systems, methods, apparatus, and computer-readable media for automatic control of active noise cancellation

摘要

Active noise cancellation is combined with spectrum modification of a reproduced audio signal to enhance intelligibility.

主权项

1. A method of processing a reproduced audio signal, said method comprising performing the following acts within a device that is configured to process audio signals:
based on information from a first channel of a sensed multichannel audio signal and information from a second channel of the sensed multichannel audio signal, generating a noise estimate; based on information from the noise estimate and a power ratio of a subband power estimate of the noise estimate to a corresponding subband power estimate of the reproduced audio signal, boosting at least one frequency subband of the reproduced audio signal with respect to at least one other frequency subband of the reproduced audio signal to produce an equalized audio signal; based on information from a sensed noise reference signal, generating an anti-noise signal; and combining the equalized audio signal and the anti-noise signal to produce an audio output signal.