04882762 is referenced by 112 patents and cites 5 patents.

A programmable low voltage multi-band compression system suitable for use with hearing aids is described. Received audio signals are processed by a band split filter which separates the received audio signal into a plurality of frequency bands. A plurality of compressors coupled to the band split filter compresses each of the respective frequency bands. The output of the compressor are then summed to generate a composite audio signal. The compression ratio of each of the compressors is set, in response to a set of control signals, to a preselected independent value. The average gain of each of the compressors is set to a preselected level independently of the other compressors. In addition, the compression ratio of each compressor may vary with input signal level. Another set of control signals is employed for setting the gain of the compressor to provide a volume control function.

Title
Multi-band programmable compression system
Application Number
7/160023
Publication Number
4882762
Application Date
February 23, 1988
Publication Date
November 21, 1989
Inventor
Fred D Waldhauer
La Honda
CA, US
Assignee
Resound Corporation
CA, US
IPC
H04B 1/64
H04R 29/00
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