Electrical audio signal processing systems and devices – Hearing aids – electrical – Wideband gain control
Patent
1996-08-22
2000-06-06
Le, Huyen
Electrical audio signal processing systems and devices
Hearing aids, electrical
Wideband gain control
381312, 381320, H04R 2500
Patent
active
06072885&
ABSTRACT:
A hearing compensation system for the hearing impaired comprises an input transducer for converting acoustical information at an input to electrical signals at an output, an output transducer for converting electrical signals at an input to acoustical information at an output, a plurality of bandpass filters, each bandpass filter having an input connected to the output of said input transducer, a plurality of AGC circuits, each individual AGC circuit associated with a different one of the bandpass filters and having an input connected to the output of its associated bandpass filter and an output connected to the input of the output transducer. The bandpass filters and AGC circuits may be divided into two processing channels, one for low frequencies and one for high frequencies and may drive separate audio transducers, one configured for maximum efficiency at low frequencies and one configured for maximum efficiency at high frequencies.
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Chabries Douglas M.
Mead Carver A.
Stockham, Jr. Thomas G.
Le Huyen
Sonic Innovations, Inc.
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