Widex A/s

Lars Baekgaard Jensen

Kristian Tjalfe Klinkby

Christian Christiansen Burger

Joe Jensen

Svend Vitting Andersen

Tina Ahlberg Larsen

Morten Kroman

Klaus Henrik Vaarbroe

Kim Hjortgaard Nielsen

Christian Christiansen BÜRGER

A method () of operating a hearing aid system (), wherein the dynamic range of input signal levels is improved by reducing the sensitivity of an input transducer in response to a trigger event while at the same time applying a gain adapted to compensate the reduced sensitivity and a hearing aid system () adapted to carry out the method.

Hearing aid system and a method of operating a hearing aid system

A programming equipment () for programming (fitting) of a programmable hearing aid () comprises means for receiving information on the state of operation of signal processing systems included in the hearing aid. This information is utilized to present a graphical representation of the state of operation of these systems to the person performing the programming. The invention further provides a hearing aid and a method of programming a hearing aid.

Equipment for programming a hearing aid and a hearing aid

A hearing aid system and method of operating the hearing aid system, wherein the impedance of a hearing aid receiver is measured, values of two hearing aid receiver parameters are derived based on the measurements, an electro-acoustical model of the receiver is provided using the derived values, the model is used to predict (i) a non-distorted membrane displacement based on the derived values of the parameters measured at a zero bias voltage, and (ii) a distorted membrane displacement based on the derived values of the parameters measured at a non-zero bias voltage, based on the predicted displacements, a compensation gain is determined suitable to compensate non-linear distortion of the hearing aid receiver, and the compensation gain is applied to the processing of a hearing aid input signal.

Method of operating a hearing aid system and a hearing aid system

A hearing aid system and method of operating the hearing aid system, wherein the impedance of a hearing aid receiver is measured, the measured impedance is used to determine non-linearity characteristics of the receiver, and upon detecting that the non-linearity exceeds a threshold, the user is alerted and/or the receiver non-linearity is compensated.

A method for manufacturing a hearing aid component adapted for fitting in the auditory canal of a hearing aid user, the hearing aid component having a covering of resilient material on at least part of its outside surface and having an inner sound conveying part, the method including the steps of acquiring data representing the shape of the auditory canal of the user; forming a three-dimensional computer model of the shape of the hearing aid component based on the acquired data; forming a three-dimensional computer model of a mould for casting the covering; manufacturing the mould in a rapid prototyping process based on the three-dimensional model; casting the covering in the mould; removing the mould from the covering; and forming the hearing aid component by joining the covering with the inner sound conveying part.

Method for manufacturing a hearing aid having a custom fitted resilient component

A signal processing apparatus () for a hearing aid with a controllable directional characteristic is provided which comprises a directional controller () receiving first and second microphone signals () and output an output signal (), a signal analyzer () which detects whether at least one of said first and second microphone signals being undesired signals, and wherein said directional controller minimizes the output signal by adjusting the directional characteristic only if the signal analyzer has detected undesired signals.

Method for controlling the directionality of the sound receiving characteristic of a hearing aid and a signal processing apparatus

In an output stage for a hearing aid (), a reduction in the power consumption for low level input signals is obtained through the use of a time-averaging output driver (), whereby the output transducer is subject to three different conditions of operations, this being obtained through the generation of three-state control signals for control of a H-bridge. The three-state control signals are generated through the use of a time-averaging device whereby the two-level output of a single bit Sigma-Delta modulator () is transformed to a set of control signals that, at any given time, can assume one of three states. In a preferred embodiment the time-averaging device is a delay ().

Output stage for a hearing aid and method of driving output stage

A hearing aid with a test controller for detection of a defect in the signal path of the hearing aid is provided. The test controller controls a test signal generator and a probe means for determination of a signal parameter, such as signal level, frequency spectrum, phase characteristic, auto-correlation, cross-correlation, etc. A set of signal switches controlled by the test controller is provided for connecting a desired test signal generator or a desired probe means to a desired point in the signal path for testing of a desired part of the hearing aid. Further signal switches are provided for coupling hearing aid components into and out of the signal path of the hearing aid.

Hearing aid with a self-test capability

A hearing aid with a directional characteristic, including at least two spaced apart input transducers and wherein transducer signal type, such as transducer noise, wind noise, sound emitted from a sound source located in the surroundings of the hearing aid, distorted signals, such as clipped signals, slew rate limited signals, etc, is determined, and wherein signal processing in the hearing aid, such as transducer matching, filtering, signal combination, etc, is adapted according to the determined signal type. For example, the directional characteristic may be switched to an omnidirectional characteristic when at least one of the input transducer signals is dominated by noise or distortion, and/or adaptive matching of input transducers may be put on hold while at least one of the input transducer signals is dominated by noise or distortion.

Growing community of inventors

Farum, Denmark

Lars Baekgaard Jensen