Sivantos Pte. Ltd.

Siemens Audiologische Technik Gmbh

Siemens Medical Instruments Pte. Ltd.

Siemens Corporation

Henning Puder

Eghart Fischer

Matthias Fröhlich

Jens Hain

Andre Steinbuss

Tobias Daniel Rosenkranz

Matthias Latzel

Thomas Pilgrim

Rainer Martin

André Steinbuβ

Frank Naumann

Homayoun Kamkar-Parsi

Tobias Wurzbacher

Wolfgang Sörgel

Umut Goekay

Dianna Yee

Wolfgang Soergel

Alexander Schasse

Justinian Rosca

Heiko Claussen

Ulrich Kornagel

Walter Kellermann

Volkmar Hamacher

Maja Serman

Heinz Goeckler

Georg-Erwin Arndt

Robert Bäuml

Homayoun Kamkar Parsi

Thomas Fischer

Martin Bouchard

Marc Aubreville

Michael T Loiacono

Thomas Hanses

Frank Beck

Daniel Alfsmann

Timo Gerkmann

Klaus Reindl

Tim Fingscheidt

Oliver Dreβler

Rosa-Linde Fischer

Robert Baüml

Thomas Kurbiel

Ivine Kuruvila

Ulrich Hoppe

Stefan Handrick

Patrick Bauer

Stefan Meier

Hala AS´AD

Oliver DREßLER

Umut GÖKAY

Heinz Pr Goeckler

André Steinbuss

André Steinbuß

Matthias FrÀ¶hlich

Rainer Prof Martin

A method for directional signal processing of signals of a microphone array, including first and second microphones generating first and second input signals from an ambient sound, uses the first input signal to form a reference signal transformed into the frequency domain, thereby generating a frequency-space reference signal. The first and second input signals are transformed into the frequency domain, and a first frequency-space directional signal is formed in the frequency domain using the transformed first and second input signals. A frequency-resolved comparison of the frequency-space reference signal with the first frequency-space directional signal or signal derived therefrom in the frequency domain, is used to generate frequency-dependent first gain factors to generate a time filter in the time domain. The reference signal is filtered by the time filter and an output signal is generated from the reference signal filtered by the time filter.

Hearing instrument and method for directional signal processing of signals in a microphone array

A system response of an individual listener's brain to a sound signal stimulus is estimated. The system response represents the generation of an electroencephalography signal measured at a given measuring point of the listener's head by the sound signal stimulus. A sound signal with the sound signal stimulus is presented to the ear of the listener. An audio signal corresponding to the sound signal is generated, and audio signal data is extracted from the audio signal with a measuring electrode that measures an electroencephalography training signal. A measurement data set is generated from the first electroencephalography training signal. A noise signal is measured on the listener's head while the first sound signal impinges on the listener's ear. A Gaussian conditional probability density function taken as the system response of the listener's brain to the sound signal stimulus, with respect to the given measurement point.

Method of estimating a system response of an individual listener's brain to a sound signal stimulus

A method for processing an input audio signal includes using a first analytical filter bank to divide the input audio signal in a first frequency splitting process into a plurality of first frequency bands. The first frequency bands of a first subgroup are divided in a further frequency splitting process by a further analytical filter bank into a plurality of frequency subbands. The divided input audio signal is frequency-selectively processed or amplified. The divided and processed input audio signal is then combined again into an output audio signal. A prediction is applied to the first frequency bands of the first subgroup and/or the frequency subbands derived therefrom, to compensate for latency differences between the first frequency bands and the frequency subbands as a result of the or each further frequency splitting process. A device or hearing aid for carrying out the method is also provided.

Method and device for frequency-selective processing of an audio signal with low latency

A method operates a hearing device in present surroundings such that noise cancellation of the hearing device is activated, so that ambient sounds are reduced for a user of the hearing device. A desired value for the voice volume of the user is determined for the present surroundings. An actual value for the voice volume of the user is measured. If the actual value is lower than the desired value, the hearing device takes a measure to prompt the user to speak more loudly. Additionally, a hearing device is configured to implement the method.

Method for operating a hearing device, and hearing device

The phase responses of a first and a second microphone are adjusted with first and second filters that filter their microphone signals. The first filter corresponds to a first contribution to a phase shift between the microphones and includes a first adaptation parameter. The second filter corresponds to a second contribution to the phase shift and has a second adaptation parameter. A global filter, which is formed with the first and second filters, represents the first and second contributions to the phase shift and includes the first and second adaptation parameters. The global filter determines a first value for the first adaptation parameter and a second value for the second adaptation parameter via a multidimensional optimization. The phase responses are adjusted by applying the first filter and the second filter to at least one of the microphone signals with the adaptation parameters set to the first and second values, respectively.

Method of adjusting the respective phase responses of a first microphone and a second microphone

A method for operating a hearing device is specified. The hearing device has at least one microphone that picks up an input sound signal and converts it into an electrical input signal. The hearing device has a signal processing section that modifies the electrical input signal on the basis of an audiogram of a user and thereby generates a first electrical output signal. The hearing device has an active noise reduction system that generates a second electrical output signal in order to reject a noise component. The hearing device has a receiver that converts the first electrical output signal and the second electrical output signal into an output sound signal, for output to the user. The active noise reduction system is operated in parallel with the signal processing section. A corresponding hearing device is programmed to perform the method.

An input signal is provided with a low microphone noise in a hearing apparatus. The microphone noise in the input signal of the hearing apparatus is reduced, by the input signal being filtered by a Wiener filter, if a noise power determined at the input signal is smaller than a predetermined limit value. The Wiener filter is however deactivated, if the noise power is greater than the limit value or equal to the limit value.

Hearing apparatus with a facility for reducing a microphone noise and method for reducing microphone noise

A method of operating a hearing apparatus and hearing apparatus having at least one of a first microphone or a second microphone which generate a first microphone signal and a second microphone signal respectively, the first microphone and the second microphone being arranged in at least one of a first hearing device and a second hearing device, a third microphone which generates a third microphone signal, the third microphone being arranged in an external device, and a signal processing unit, wherein in the signal processing unit the third microphone signal and at least one of the first microphone signal or the second microphone signal are processed together thereby producing an output signal with an enhanced signal to noise ratio compared to the first microphone signal and/or the second microphone signal.

Hearing apparatus

A method operates a hearing device. A first input signal is generated by a first input transducer of the hearing device from an ambient sound signal. An external input transducer outside of the hearing device generates an external input signal from the ambient sound signal. A relative transfer function from the external input transducer to the hearing device with respect to a target signal source is ascertained based on the first input signal and/or external input signal. The external input signal is filtered by the relative transfer function, thereby generating an estimated target signal. Noise suppression takes place in the hearing device based on the estimated target signal.

Method for operating a hearing device and hearing device system

A method and an apparatus reduce feedback in a hearing aid device. The method includes the step of acquiring a first feedback transfer function at a first point in time on a feedback path from a signal processing device via an electro-acoustic transducer, an acoustic signal path from the electro-acoustic transducer to an acousto-electric transducer and via the acousto-electric transducer back to the signal processing device. In a further step, a weighted mean value function is determined in a manner dependent on amplitude absolute values of the first feedback transfer function. A second feedback transfer function is estimated by an adaptive filter, wherein coefficients of the adaptive filter are determined in a manner dependent on the weighted mean value function. The adaptive filter is applied to a signal which is derived from an acoustic input signal of the acousto-electric transducer.

Method for feedback suppression

A method performs frequency-dependent reduction of noise in an input signal, wherein the input signal is allocated to a main signal path and to an auxiliary signal path. A filter bank separates the input signal into a plurality of frequency bands each having a certain bandwidth and center frequency. In the auxiliary signal path, the bandwidth of the signal component is reduced in each frequency band thus forming a reduced frequency band in each case. Wherein in each reduced frequency band, a reduction parameter is determined from the signal component of the input signal, and wherein in the main signal path in each frequency band, noise in the input signal is reduced by use of the reduction parameter in that frequency band.

Method and hearing aid for frequency-dependent reduction of noise in an input signal

A method transmits an audio signal from a transmitter to a receiver and a hearing device, particularly a hearing aid, contains a communication facility which is provided and configured for transmitting and/or receiving an audio signal according to the method. A hearing device system has two hearing devices and is provided and configured to transmit audio signals between the two hearing devices by their communication facilities according to the method.

Method and hearing device for transmitting an audio signal from a transmitter to a receiver

A method performs noise suppression in hearing aids. A step of the method involves a first audio signal being split into a plurality of essentially disjunct frequency bands. A further step of the method involves a reference band being selected from the plurality of frequency bands, which reference band has an establishable first component of a speech signal. Another step involves a correlation between the reference band and a first frequency band being ascertained. A further step involves a value that indicates a second component of a speech signal in the first frequency band being ascertained on the basis of the correlation. Another step of the method involves a noise suppression being set in the first frequency band on the basis of the ascertained value.

Method and apparatus for noise suppression based on inter-subband correlation

Method and apparatus for feedback suppression

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Erlangen, Germany

Henning Puder