Hearing aid with means for estimating the ear plug fitting
First Claim
1. A hearing aid comprising a receiver and at least one first microphone for transforming an acoustical signal surrounding a hearing aid user into an electrical signal, said hearing aid comprisingan ear plug part adapted for fitting tightly in the ear canal of a hearing aid user such that an inner volume is formed in the inner part of the ear canal between the ear plug part and the ear drum of the hearing aid user, said ear plug part comprising a second microphone adapted for transforming an acoustical signal in said volume into an electrical signal,an estimator for estimating the effective size of the air leak between said inner volume and the surroundings based on the acoustical signal detected in said volume by said second microphone from a predetermined acoustical signal at a frequency below 1000 Hz, generated by said receiver, anda notifier for notifying the hearing aid user if the size of said air leak is outside a predefined range.
1 Assignment
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Accused Products
Abstract
A hearing aid (1) comprising a receiver (2) and at least one first microphone for transforming an acoustic signal surrounding a hearing aid user into an electrical signal, where the hearing aid comprises an ear plug part prepared for fitting tightly into the car canal (11) of a hearing aid user such that an inner volume is formed in the inner part of the ear canal between the car plug part and the car drum of the hearing aid user. The car plug part comprises a second microphone (3) arranged for transforming an acoustic signal in the volume into an electrical signal. The hearing aid comprises estimating means for estimating the effective size of the air leak between the inner volume and the surroundings based on the acoustical signal detected in said volume by said second microphone (3) from a known acoustical signal below 1000 Hz generated by the receiver. The hearing aid further comprises notification means for notifying the hearing aid user if the size range of the air leak is outside a predefined range.
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Citations
14 Claims
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1. A hearing aid comprising a receiver and at least one first microphone for transforming an acoustical signal surrounding a hearing aid user into an electrical signal, said hearing aid comprising
an ear plug part adapted for fitting tightly in the ear canal of a hearing aid user such that an inner volume is formed in the inner part of the ear canal between the ear plug part and the ear drum of the hearing aid user, said ear plug part comprising a second microphone adapted for transforming an acoustical signal in said volume into an electrical signal, an estimator for estimating the effective size of the air leak between said inner volume and the surroundings based on the acoustical signal detected in said volume by said second microphone from a predetermined acoustical signal at a frequency below 1000 Hz, generated by said receiver, and a notifier for notifying the hearing aid user if the size of said air leak is outside a predefined range.
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11. A method for estimating the effective size of the air leak of a hearing aid ear plug arranged in the ear canal of a hearing aid user, said method comprising
arranging an ear plug part in the ear canal of a hearing aid user such that an inner volume is formed in the inner part of the ear canal between the ear plug part and the ear drum of the hearing aid user, generating a predetermined acoustical signal at a frequency below 1000 Hz by a receiver of said hearing aid, transforming said acoustical signal in said inner volume into an electrical signal by a microphone arranged in said ear plug part and facing said inner volume, estimating the effective size of the air leak between said inner volume and the surroundings based on the acoustical signal detected in said inner volume by said microphone, and notifying the hearing aid user if the effective size of said air leak is outside a predefined range.
Specification