Method and device for compensating for partial hearing loss
Patent 4868880 Issued on September 19, 1989. Estimated Expiration Date: 
June 1, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 1, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAutomatic gain selector for a noise suppression system Patent #: 4630305 InventorApplicationNo. 07/200870 filed on 06/01/1988US Classes:381/320, Spectral control381/106, With amplitude compression/expansion381/98INCLUDING FREQUENCY CONTROLExaminersPrimary: Isen, Forester W.Attorney, Agent or FirmInternational ClassH04R 25/00 (20060101)AbstractA method and device for compensating for partial hearing loss by converting a time domain signal corresponding to a sound into a series of digital component values in the frequency domain, performing a nonlinear amplitude gain operation in the frequency domain on each of the digital component values and converting the digital component values back into a time domain signal corresponding to the sound with compensation for partial hearing loss.Other References
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