Widex A/s

Peter Magnus Norgaard

Thilo Volker Thiede

Kristian Tjalfe Klinkby

Helge Pontoppidan Foeh

Jakob Nielsen

Morten Kroman

Jorgen Cederberg

Jan Hellinghus

Mike Lind Rank

Michael Ungstrup

Carsten Paludan-Muller

Helge Pontoppidan Föh

A hearing aid system (), wherein changes to the settings is only allowed if a hearing aid performance verification is carried out with a successful result as well as a method of operating such a hearing aid system.

Method of fine tuning a hearing aid system and a hearing aid system

A method of estimating a feedback path of a hearing aid (). The invention also relates to a hearing aid () adapted to carry out said method.

Method of estimating a feedback path of a hearing aid and a hearing aid

The present invention relates to a system comprising a telephone () and a hearing aid (). The analog signal to the loudspeaker () of the telephone () is picked up and digitalized at the telephone where after it is wirelessly transmitted to the hearing aid () using a radio transceiver at the telephone (), coupling with a radio at the hearing aid. The sound from the telephone () is hereby transmitted directly to the hearing aid without relying on the acoustic coupling between the telephone speaker () and the hearing aid microphones and may further be transmitted to both left and right hearing aid at the same time. The invention provides a telephone, a hearing aid and a method of communicating with a hearing aid.

Method and system for wireless communication between a telephone and a hearing aid

A hearing aid system includes a first () and a second () hearing aid, each having link means for establishing a short-range wireless connection () between the first and the second hearing aid. At least the first hearing aid has means to monitor whether the link to the second hearing aid is active and alert means to issue an alert based on a condition of the link or on a condition of the second hearing aid. The alert can be a spoken message, a visual indicator, or a message sent to an external unit (). The invention further provides a method to issue an alarm in a first hearing aid.

Hearing aid system with lost partner functionality

A method for controlling adaptation of a feedback suppression filter in a hearing aid comprises the step of suspending the adaptation of the feedback suppression filter when the level of a hearing aid reference signal is below a predetermined threshold. The invention further provides a hearing aid with a feedback suppression filter and with means for suspending adaptation of the feedback suppression filter.

Method for control of adaptation of feedback suppression in a hearing aid, and a hearing aid

A hearing aid has means () for detecting fast transients in the input signal and means () for attenuating the detected transients prior to presenting the signal with the attenuated transients to a user. Detection is performed by measuring the peak difference of the signal upstream of a band split filter bank () and comparing the peak difference against at least one peak difference limit. Then, if a transient is detected, a state machine () analyzes the peak level and the absolute average level of the signal and engages a gain calculator () to follow either the peak level or the absolute average level of the input signal for at least the duration of the transient in order to attenuate the transient. The engagement of the gain calculator () is performed in each frequency band dependent of the detected transient. The invention further provides a method for detecting fast transients.

Hearing aid and a method of detecting and attenuating transients

A method comprises deriving a control signal () from an input signal (). The process of deriving the control signal comprises a standard processing () so as to provide a standard processed control signal component () based on a standard compressor characteristic, and an individualized processing () so as to provide an individualized processed control signal component () based on an individualized compressor characteristic. The standard and individualized processed control signal components are multiplied together to form the control signal. The invention further provides a hearing aid.

Method of processing a signal in a hearing aid, a method of fitting a hearing aid and a hearing aid

A hearing aid comprises at least one microphone (M) for converting input sound into an input signal, a subtraction node for subtracting a feedback cancellation signal from the input signal thereby generating a processor input signal, a hearing aid processor (G) for producing a processor output signal by applying an amplification gain to the processor input signal, a receiver (R) for converting the processor output signal into output sound, an adaptive feedback cancellation filter for adaptively deriving the feedback cancellation signal from the processor output signal by applying filter coefficients, calculation means for calculating the autocorrelation of a reference signal, and an adaptation means for adjusting the filter coefficients with an adaptation rate, wherein the adaptation rate is controlled in dependency of the autocorrelation of the reference signal.

Hearing aid, and a method for control of adaptation rate in anti-feedback systems for hearing aids

A method for user individualized fitting of a hearing aid comprises: Performing an initial fitting () of the hearing aid in an interactive session between the hearing aid user and a fitter, monitoring, for a predetermined period after the initial fitting, the hearing aid user's choice of at least some of the settings of the hearing aid and storing the results of the monitoring in a log. The log is transmitted () to the fitter for evaluation () of preferred user settings. If the evaluation reveals that the preferred user settings are acceptable, the fitting of the hearing aid is finalized () accordingly.

Method for user indvidualized fitting of a hearing aid

A hearing aid comprises two microphones, directional processing means for combining the respective audio signals to form a spatial signal, a beamformer for controlling the directional processing means to provide adaptation of the spatial signal, and means for boosting low frequencies of the spatial signal. A feedback estimator generates a feedback compensation signal, which is combined with the boosted spatial signal. By applying feedback compensation only after directional processing and low frequency boosting, the device avoids interference by the feedback estimator with the function of the beamformer. The invention also provides a method of processing signals in a hearing aid.

Hearing aid and a method of processing input signals in a hearing aid

A hearing aid () with multiple microphones comprises a first microphone () for converting sound into a first audio signal, a second microphone () for converting sound into a second audio signal, directional processing means for combining the first and said second audio signal according to a mixing ratio to form a spatial signal, estimating means for estimating a first acoustic feedback signal entering the first microphone and a second acoustic feedback signal entering the second microphone, processing means () for processing said spatial signal by applying a gain not exceeding a resulting maximum gain limit to form a hearing loss compensation signal, wherein the resulting maximum gain limit is derived from the first and second acoustic feedback signals and the mixing ratio, and an output transducer () for converting the hearing loss compensation signal into an acoustic output. The invention further provides a method and a computer program product.

Hearing aid and method of utilizing gain limitation in a hearing aid

A hearing aid comprises an input transducer (), a subtraction node for subtracting a feedback cancellation signal from the electrical input signal thereby generating a processor input signal, a signal processor (), an output transducer (), a pair of equalization filters () for selecting from the processor input and output signals a plurality of frequency band signals, a frequency equalization unit for frequency equalization for the selected frequency band signals, and an adaptive feedback estimation filter () for adaptively deriving the feedback cancellation signal from the equalized frequency band signals. The equalization of selected frequency bands of the input signals of the adaptive feedback cancellation filter provides for an improved and in particular a faster adaption of the feedback cancellation. The invention further provides a method of reducing acoustic feedback of a hearing aid, and a hearing aid circuit.

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Frederiksberg, Denmark

Peter Magnus Norgaard