A Michael Dougherty: Automatic noise compensation system for audio reproduction equipment. Lappin & Kusmer, May 25, 1999: US05907622 (80 worldwide citation)

The disclosed audio signal processing system produces an acoustic signal in a listening space and includes devices for generating a desired volume signal, a noise signal representative of ambient noise conditions in the listening space, and an audio signal. The system further includes a variable gai ...

A Michael Dougherty: Noise estimating system for use with audio reproduction equipment. Lappin & Kusmer, February 16, 1999: US05872852 (64 worldwide citation)

The disclosed system for estimating the ambient noise level in a listening space includes a memory for storing a plurality of noise values at memory locations therein, each of the noise values being representative of the ambient noise in the listening space associated with a corresponding set of con ...

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