In-the-ear hearing aid with reduced occlusion effect and...

H - Electricity – 04 – R

Patent

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Details

H04R 25/02 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2286037

An in-the-ear hearing aid comprises a plug (1) for arrangement in the ear channel and having a shell-like wall facing the interior of the ear channel and an exterior faceplate (2) which together define a generally closed cavity (3), in which the individual components of the hearing aid are arranged. An acoustical link in th form of a hose or tube piece (13) is provided between an orifice (14) at the external side of the part of the wall of the plug (1) facing the interior of the ear channel and the residual volume (12) of the internal cavity of the plug (1) and forms together with said residual volume (12) an approximated acoustical circuit having a resonance frequency in the region of the first voice sound formants of the user. Thereby a significantly reduces occlusion effect can be obtained in a simple way in a completed hearing aid.

L'invention concerne une prothèse auditive "intra-conque" comprenant un obturateur (1), destiné à être inséré dans le conduit auditif externe et doté d'une paroi en forme de coque faisant face à l'intérieur du conduit auditif externe, et une plaque frontale (2) extérieure. L'obturateur et la plaque frontale définissent ensemble une cavité (3) généralement fermée, dans laquelle sont placés les différents composants de la prothèse auditive. Une liaison acoustique, sous la forme d'un flexible ou d'un tube (13), est réalisée entre un orifice (14) du côté extérieur de la partie de la paroi de l'obturateur (1) faisant face à l'intérieur du conduit auditif externe et le volume restant (12) de la cavité interne de l'obturateur (1). Cette liaison acoustique forme avec le volume (12) restant un circuit acoustique dont la fréquence de résonance se situe approximativement dans la plage de celle des premiers organes formateurs de sons vocaux de l'utilisateur. On obtient ainsi une réduction significative de l'effet d'occlusion d'une manière simple dans une prothèse auditive.

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