Widex A/s

Jorgen Cederberg

Peter Magnus Norgaard

Kristian Tjalfe Klinkby

Klaus Krogsgaard

Michael Ungstrup

Kristian Timm Andersen

Thilo Volker Thiede

Henning Haugaard Andersen

Helge Pontoppidan Foeh

Mette Dahl Meincke

Andreas Brinch Nielsen

Villy Jensen

A method of operating a hearing aid system, comprising a hearing aid (), adapted for detection of congestion of a sound output of the hearing aid. The invention also relates to hearing aid systems capable of carrying out such a method.

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

A hearing aid fitting system () adapted for providing sound samples illustrating the impact on sound quality from a hearing aid system defect and a method of providing such sound samples. The invention also relates to a hearing aid system and computer program code capable of carrying out such a method of providing sound samples illustrating the impact on sound quality from a hearing aid system defect and methods of operating and fitting hearing aid systems.

A hearing aid (), adapted for detection of congestion of a sound output. The invention also relates to a method of detection of congestion of a sound output.

Hearing aid and a method of operating a hearing aid system

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 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.

Growing community of inventors

Farum, Denmark

Jorgen Cederberg