Hearing aid signal-processing system
February 3, 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 ReferencesMethod and apparatus for setting an aural prosthesis to provide specific auditory deficiency corrections Method of and means for adaptively filtering near-stationary noise from speech Noise suppressor system Method and means for adaptively filtering near-stationary noise from an information bearing signal Speech intelligibility enhancement Device for the compensation of hearing impairments Processor controlled ear responsive hearing aid and method Hearing aid method and apparatus Automatic background noise estimator for a noise suppression system Audio signal processing circuit for use in a hearing aid and method for operating same Patent #: 4680798 InventorApplicationNo. 07/151850 filed on 02/03/1988US Classes:381/317, Noise compensation circuit381/320, Spectral control381/73.1, SOUND OR NOISE MASKING381/94.3In multiple frequency bandsExaminersPrimary: Ng, Jin F.Assistant: Byrd, Danita R. International ClassesH03G 3/20 (20060101)H04R 25/00 (20060101) AbstractA signal processing system for hearing aids estimates the absolute quantity of noise in each of a plurality of frequency bands. The audio gains are adjusted so as to minimize the effect of upward spread of masking, wherein noise in lower frequency bands decreases the intelligibility of speech sounds in higher frequency bands. The noise level in each frequency band is estimated by monitoring the amplitude distribution of sound events in that frequency band.Other References
| |
