Widex A/s

Thilo Volker Thiede

Peter Magnus Norgaard

Helge Pontoppidan Foeh

Kristian Tjalfe Klinkby

Peter Magnus Noergaard

Michael Ungstrup

Jorgen Cederberg

Helge Pontoppidan Föh

Tjalfe Kristian Klinkby

A method () of testing microphone performance of a hearing aid system, based on a determined correlation measure between a first and a second microphone signal, as well as a hearing aid system adapted to carry out such a method.

Method of testing microphone performance of a hearing aid system and a hearing aid system

A method () of testing microphone performance of a hearing aid system, based on a determined correspondence between a hearing aid microphone signal and a test signal provided by the hearing aid system, as well as a hearing aid system adapted to carry out such a method.

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

A binaural hearing aid system () is adapted to provide binaural beats to a hearing aid user. The invention further provides a method of generating binaural beats.

Binaural hearing aid system and a method of providing binaural beats

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 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 includes an input transducer for transforming an acoustic input signal into an electrical input signal, a processor for generating an electrical output signal by amplifying the electrical input signal with a processor gain, an output transducer for transforming the electrical output signal into an acoustic output signal, an adaptive feedback suppression filter for generating a feedback cancellation signal, and a model gain estimator generating an upper processor gain limit and for providing a control parameter indicating a possible misadjustment of the model.

Hearing aid with feedback model gain estimation

A hearing aid having an input transducer (), a signal processor (), an output transducer () and an adaptive filter () for generating a feedback cancellation signal () further comprises a norm estimator () generating a first norm signal () indicative of a norm of the electrical input signal and a second norm signal () indicative of a norm of a feedback-cancelled electrical input signal, a comparator for comparing the first and second norm signals and generating a difference value N&#x2212;Nand a decision unit disabling application of the feedback cancellation signal to the signal path of the hearing aid if the difference value is above a certain threshold value cthus avoiding the feedback cancellation mechanism actually increasing acoustic feedback of the hearing aid. The invention also provides a method for reducing acoustic feedback of a hearing aid, a computer program, and an electronic circuit for a hearing aid.

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Copenhagen, Denmark

Thilo Volker Thiede