05907622 is referenced by 80 patents and cites 18 patents.

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 gain amplifier for amplifying the audio signal in response to a gain control signal and a device for generating the gain control signal in response to a volume control signal. The volume control signal is generated in response to the noise and desired volume signals so that the volume control signal increases in response to increases in the noise signal. The volume control signal increases at a rate of increase and the rate of increase decreases as the volume control signal increases.

Title
Automatic noise compensation system for audio reproduction equipment
Application Number
8/531846
Publication Number
5907622
Application Date
September 21, 1995
Publication Date
May 25, 1999
Inventor
A Michael Dougherty
110 B Inman St., Cambridge, 02139
MA, US
Agent
Lappin & Kusmer
IPC
H03G 3/20
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