H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 25/00 (2006.01) A61F 11/06 (2006.01)
Patent
CA 2636029
Noise reduction circuitry in a hearing aid includes a programmable filter (41) coupled to a microphone (31) coupled to the ear canal. The filter is programmed in a feedback loop in which the coefficients of the filter are set in accordance with a signal from the microphone. The filter is programmed for a transfer function that is substantially the inverse of the spectrum of the sound detected by the microphone to provide a relatively quiet chamber in the ear canal.
La présente invention concerne un circuit de réduction de bruit dans une prothèse auditive,comprenant un filtre programmable (41) couplé à un microphone (31) couplé au canal de l~oreille. Le filtre est programmé dans une boucle de rétroaction dans laquelle les coefficients du filtre sont définis en accord avec un signal du microphone. Le filtre est programmé pour une fonction de transfert qui est substantiellement l~inverse du spectre du son détecté par le microphone pour fournir une chambre relativement calme dans le canal auditif.
Borden Ladner Gervais Llp
Zounds Inc.
LandOfFree
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