EP 1594344 A2 20051109 - Method of obtaining acoustical characteristics, hearing instrument and manufacturing method thereof
Title (en)
Method of obtaining acoustical characteristics, hearing instrument and manufacturing method thereof
Title (de)
Verfahren zum Erlangen akustischer Eigenschaften, Hörgerät und dessen Herstellungsverfahren
Title (fr)
Méthode pour obtenir des charactéristiques acoustiques, prothèse auditive et son procédé de fabrication
Publication
Application
Priority
EP 05405460 A 20050803
Abstract (en)
According to the invention, a hearing instrument comprising at least one inner microphone (6) operable to determine a sensing signal representative of an acoustic signal at a position in front of the user's eardrum - which may be an acoustic signal at a position between an ITE (or ITC or CIC) hearing instrument and the eardrum or between an earpiece and the eardrum - is used. In accordance with the invention, in front of the eardrum an acoustic signal is produced. The inner microphone creates a sensing signal representative of the acoustic signal, and the signal processing unit of the hearing instrument determines a characteristic of the user's ear canal based thereon and memorizes values indicative of the characteristic. According to a preferred embodiment, the characteristic is an acoustic coupling transfer characteristic, which is determined based on a comparison of a signal representative of the input signal of the hearing instrument's receiver and the sensing signal. In contrast to the state of the art, no control loop is necessary to adapt the gain to the ear canal characteristic, but the memorized values may be used therefor.
IPC 1-7
IPC 8 full level
H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 25/70 (2013.01 - EP US); H04R 25/453 (2013.01 - EP); H04R 2225/0216 (2019.04 - EP US); H04R 2225/023 (2013.01 - EP); H04R 2225/025 (2013.01 - EP); H04R 2460/15 (2013.01 - EP)
Citation (applicant)
- CH 678692 A5 19911031 - PHONAK AG
- US 4596902 A 19860624 - GILMAN SAMUEL [US]
- US 6658122 B1 20031202 - WESTERMANN SOREN ERIK [DK], et al
- EP 1316783 A2 20030604 - PHONAK AG [CH]
- EP 1681904 A1 20060719 - PHONAK AG [CH]
Citation (examination)
- US 4289143 A 19810915 - CANAVESIO FRANCO, et al
- US 5792072 A 19980811 - KEEFE DOUGLAS H [US]
- EP 1465454 A2 20041006 - GENNUM CORP [CA]
- EP 1467595 A2 20041013 - GENNUM CORP [CA]
- US 6219427 B1 20010417 - KATES JAMES MITCHELL [US], et al
Designated contracting state (EPC)
CH DE DK LI
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05405460 A 20050803