Widex A/s

Morten Agerbaek Nordahn

Martin Rung

Jan Topholm

Jorgen Mejner Olsen

Klaus Henrik Vaarbroe

Per Kokholm Sorensen

Carsten Paludan-Muller

Lars Friis

Peter Nordland Jensen

Jørgen Mejner Olsen

Ole Hau

Jan Tøpholm

Soren Christensen

Anders Holm Jessen

Inge Balling

David Morris

Per Kokholm SØRENSEN

Søren Christensen

A hearing aid () comprising a receiver () 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 () 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 () 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 () 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.

Hearing aid with means for estimating the ear plug fitting

A hearing aid () adapted for operation in a sound amplification mode and for operation in an occlusion measurement mode, has a microphone () adapted for transforming an acoustic sound level external to a hearing aid users ear canal () into a first electrical signal which is guided to an A/D converter forming a first digitized electrical signal. The hearing aid has signal processing means with a filter bank () with means for splitting an electrical signal into frequency bands, and a receiver () adapted for generating acoustic sounds in the ear canal of a user when in said amplification mode, and for transforming the acoustic sound level in the ear canal into a second electrical signal, when in occlusion measurement mode. The invention also provides a system and a method for measuring the occlusion effect.

System, method and hearing aids for in situ occlusion effect measurement

A hearing aid earpiece () is provided, that is custom fitted to the individual shape of the ear canal of a user and manufactured in a rapid prototyping process. The earpiece comprises a sound conduit () that is adapted for conveying an acoustic signal from an acoustic inlet port towards an acoustic outlet port and wherein the sound conduit is looped such that at least one geometrical plane will intersect the sound conduit at least three times thereby providing a length of the sound conduit exceeding a largest outer dimension of the hearing aid earpiece. The invention also relates to a hearing aid comprising such a hearing aid earpiece and a method for manufacturing such an earpiece.

Hearing aid earpiece and a method of manufacturing a hearing aid earpiece

In a method and system for fitting the gain of a hearing aid () for a hearing impaired person, a loop gain of the hearing aid in the ear canal () of the hearing impaired person is measured for at least one frequency band. An effective vent parameter such as a corresponding vent diameter for the hearing aid by determining a vent parameter that generates the best fit between a modelled and the measured loop gain is estimated, a vent effect value based on the estimated effective vent parameter is determined, and a corrected hearing aid gain is provided by means of the determined vent effect value. The invention provides a method, a computer program, a system for fitting a hearing aid, a hearing aid and a computer system.

Method and system for fitting a hearing aid

A hearing aid () comprises at least one microphone (), a signal processing means () and an output transducer (). The signal processing means is adapted to receive an input signal from the microphone. The signal processing means is adapted to apply a hearing aid gain to the input signal to produce an output signal to be output by the output transducer, and the signal processing means further comprises means for adjusting the hearing aid gain up or down until the hearing aid gain differs from the direct transmission gain by more than a predetermined value.

Hearing aid and method of compensation for direct sound in hearing aids

A hearing aid () comprises at least one microphone (), a signal processing means () and an output transducer (). The signal processing means is adapted to receive an input signal from the microphone. The signal processing means is adapted to apply a hearing aid gain to the input signal to produce an output signal to be output by the output transducer, and the signal processing means comprises means for adjusting the hearing aid gain by a direct transmission gain calculated for the hearing aid. The invention further provides a method and a system for reducing noise, as well as a computer program product.

Method and system of noise reduction in a hearing aid

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Bronshoj, Denmark

Morten Agerbaek Nordahn