H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 25/00 (2006.01)
Patent
CA 2639969
There is presented a hearing aid with multiple microphones which comprises a first microphone for converting sound into a first audio signal, a second microphone for converting sound into a second audio signal, directional processing means for combining the first and said second audio signal according to a mixing ratio to form a spatial signal, estimating means for estimating a first acoustic feedback signal entering the first microphone and a second acoustic feedback signal entering the second microphone, processing means for processing said spatial signal by applying a gain not exceeding a resulting maximum gain limit to form a hearing loss compensation signal, wherein the resulting maximum gain limit is derived from the first and second acoustic feedback signals and the mixing ratio, and an output transducer for converting the hearing loss compensation signal into an acoustic output.
L'invention concerne une prothèse auditive à microphones multiples comprenant un premier microphone destiné à convertir un son en un premier signal audio, un second microphone destiné à convertir un son en un second signal audio, des moyens de traitement directionnels permettant de combiner le premier et le second signal audio en fonction d'un rapport de mélange afin de former un signal spatial, des moyens d'estimation permettant d'estimer un premier signal de rétroaction acoustique entrant dans le premier microphone et un second signal de rétroaction acoustique entrant dans le second microphone, des moyens de traitement permettant de traiter le signal spatial par application d'un gain ne dépassant pas une limite de gain maximum résultant afin de former un signal de compensation de perte auditive, la limite de gain maximum résultant étant dérivée du premier et du second signal de rétroaction acoustique et du rapport de mélange, et un émetteur-récepteur de sortie permettant de convertir le signal de compensation de perte auditive en une sortie acoustique.
Foeh Helge Pontoppidan
Klinkby Kristian Tjalfe
Norgaard Peter Magnus
Thiede Thilo Volker
Smart & Biggar
Widex A/s
LandOfFree
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