The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2005
Filed:
Nov. 22, 1999
Douglas Melvin Chabries, Orem, UT (US);
Richard Wesley Christiansen, Highland, UT (US);
Aaron Michael Hammond, Provo, UT (US);
William Charles Borough, Fort Collins, CO (US);
Douglas Melvin Chabries, Orem, UT (US);
Richard Wesley Christiansen, Highland, UT (US);
Aaron Michael Hammond, Provo, UT (US);
William Charles Borough, Fort Collins, CO (US);
Brigham Young University, Provo, UT (US);
Abstract
A hearing compensation system for the hearing impaired comprises a plurality of bandpass filters having an input connected to an input transducer and each bandpass filter having an output connected to the input of one of a plurality of multiplicative AGC circuits whose outputs are summed together and connected to the input of an output transducer. The multiplicative AGC circuits attenuate acoustic signals having a constant background level without the loss of speech intelligibility. The identification of the background noise portion of the acoustic signal is made by the constancy of the envelope of the input signal in each of the several frequency bands. The background noise that will be suppressed includes multi-talker speech babble, fan noise, feedback whistle, florescent light hum, and white noise.