Patents by Inventor Eghart Fischer
Eghart Fischer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240276161Abstract: A method for operating a binaural hearing system having first and second hearing instruments uses respective first and second input transducers to generate first and second input signals from an ambient sound. The first and second input signals are subjected to respective first and second low-latency analyses to determine at least one first and at least one second respective parameter of a signal processing. The first parameter is transmitted to the second hearing instrument and the second parameter is transmitted to the first hearing instrument. A synchronized parameter is determined in the first and second hearing instruments based on the first and second parameters. The synchronized parameter is applied in the first hearing instrument to signal components of the first input signal and in the second hearing instrument to signal components of the second input signal. A binaural hearing system is configured to carry out the method.Type: ApplicationFiled: January 19, 2024Publication date: August 15, 2024Inventors: Eghart Fischer, Cecil Wilson, Sebastian Best, Oliver Dressler
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Patent number: 12047747Abstract: 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.Type: GrantFiled: June 27, 2022Date of Patent: July 23, 2024Assignee: Sivantos Pte. Ltd.Inventors: Henning Puder, Eghart Fischer, Tobias Daniel Rosenkranz
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Publication number: 20240244382Abstract: A hearing aid with a low-latency filter and a method of operating such a hearing aid (500).Type: ApplicationFiled: March 25, 2024Publication date: July 18, 2024Applicant: WIDEX A/SInventors: Thomas Bo ELMEDYB, Lars Dalskov MOSGAARD, Rasmus BENDTSEN, Jannik ANDERSEN, Benjamin DIEUDONNÉ, Peter WAHRMAN, Niels JENSEN, Eghart FISCHER
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Patent number: 12029572Abstract: 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.Type: GrantFiled: November 30, 2020Date of Patent: July 9, 2024Assignee: Sivantos Pte. Ltd.Inventors: Ivine Kuruvila, Ulrich Hoppe, Stefan Handrick, Eghart Fischer, Maja Serman, Henning Puder
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Publication number: 20240031746Abstract: A method operates a binaural hearing device having two individual devices. The individual devices each have an input transducer to receive an acoustic signal and convert it into a multi-channel input signal, impulse noise suppression to generate an attenuation curve to reduce impulse noise signal levels, an amplifier for the multi-channel signal amplification of the input signal and for generating an output signal based on the attenuation curve, an output transducer to convert the output signal into a sound signal, and a transceiver unit for signal coupling between the individual devices. In each individual device a scalar limitation value is defined from the attenuation curve. The limitation values are communicated to the respective other individual device. A common limitation value is defined from the two limitation values. The attenuation curves are limited with the common limitation value, and the signal amplification is set based on the limited attenuation curves.Type: ApplicationFiled: July 18, 2023Publication date: January 25, 2024Inventor: Eghart Fischer
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Patent number: 11743637Abstract: A method for directional signal processing for an acoustic system, wherein first and second input transducers generate a first and a second input signal from an ambient sound. First and second intermediate signals are generated from the first and second input signal, wherein a preliminary superposition parameter is obtained for a first superposition of the first intermediate signal and the second intermediate signal in such a way that for the first superposition an attenuation in a first target direction has a maximum. A superposition parameter is formed from the preliminary superposition parameter so that a second superposition of the first and second intermediate signals, formed in the first target direction with the superposition parameter, has a pre-specified first value for a gain that is greater than zero. An output signal of the acoustic system is formed from the second superposition.Type: GrantFiled: August 26, 2021Date of Patent: August 29, 2023Assignee: Sivantos Pte. Ltd.Inventors: Eghart Fischer, Johannes Zeitler
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Publication number: 20230047868Abstract: A hearing system includes a hearing instrument for capturing a sound signal from an environment of the hearing instrument. The captured sound signal is processed, and the processed sound signal is output to a user of the hearing instrument. In a speech recognition step, the captured sound signal is analyzed to recognize speech intervals, in which the captured sound signal contains speech. In a speech enhancement procedure performed during recognized speech intervals, the amplitude of the processed sound signal is periodically varied according to a temporal pattern that is consistent with a stress rhythmic pattern of the user. A method for operating the hearing instrument is also provided.Type: ApplicationFiled: July 15, 2022Publication date: February 16, 2023Inventors: Cecil Wilson, Maja Serman, Eghart Fischer
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Publication number: 20230007408Abstract: 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.Type: ApplicationFiled: June 27, 2022Publication date: January 5, 2023Inventors: Henning Puder, Eghart Fischer, Tobias Daniel Rosenkranz
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Patent number: 11510018Abstract: A hearing system contains a hearing instrument and the hearing instrument is configured to support the hearing of a hearing-impaired user. The hearing instrument is operated via an operating method. The method includes capturing a sound signal from an environment of the hearing instrument, processing the captured sound signal to at least partially compensate the hearing-impairment of the user and outputting the processed sound signal to the user. The captured sound signal is analyzed to recognize speech intervals, in which the captured sound signal contains speech. During recognized speech intervals, at least one time derivative of an amplitude and/or a pitch of the captured sound signal is determined. The amplitude of the processed sound signal is temporarily increased, if the at least one derivative fulfills a predefined criterion.Type: GrantFiled: November 16, 2020Date of Patent: November 22, 2022Assignee: Sivantos Pte. Ltd.Inventors: Maja Serman, Cecil Wilson, Eghart Fischer
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Publication number: 20220070579Abstract: A method for directional signal processing for an acoustic system, wherein first and second input transducers generate a first and a second input signal from an ambient sound. First and second intermediate signals are generated from the first and second input signal, wherein a preliminary superposition parameter is obtained for a first superposition of the first intermediate signal and the second intermediate signal in such a way that for the first superposition an attenuation in a first target direction has a maximum. A superposition parameter is formed from the preliminary superposition parameter so that a second superposition of the first and second intermediate signals, formed in the first target direction with the superposition parameter, has a pre-specified first value for a gain that is greater than zero. An output signal of the acoustic system is formed from the second superposition.Type: ApplicationFiled: August 26, 2021Publication date: March 3, 2022Inventors: Eghart Fischer, Johannes Zeitler
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Patent number: 11089410Abstract: A method for directional signal processing for a hearing aid. First and second input transducers generate first and second input signals from an ambient acoustic signal. A forward signal and a backward signal are generated from the first and second input signals and a first directional parameter is determined as a linear factor of a linear combination of the forward and backward signals. The first directional signal has a maximum attenuation in a first direction. A correction parameter is ascertained such that a second directional signal has a defined relative attenuation in the first direction. The second directional signal is generated from the forward signal and the backward signal with the first directional parameter and the correction parameter or with the first directional signal and the omnidirectional signal based on the correction parameter. An output signal of the hearing aid is generated based on the second directional signal.Type: GrantFiled: August 10, 2020Date of Patent: August 10, 2021Assignee: Sivantos Pte. Ltd.Inventors: Eghart Fischer, Homayoun Kamkar-Parsi, Jens Hain
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Publication number: 20210161418Abstract: 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.Type: ApplicationFiled: November 30, 2020Publication date: June 3, 2021Inventors: Ivine Kuruvila, Ulrich Hoppe, Stefan Handrick, Eghart Fischer, Maja Serman, Henning Puder
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Publication number: 20210152949Abstract: A hearing system contains a hearing instrument and the hearing instrument is configured to support the hearing of a hearing-impaired user. The hearing instrument is operated via an operating method. The method includes capturing a sound signal from an environment of the hearing instrument, processing the captured sound signal to at least partially compensate the hearing-impairment of the user and outputting the processed sound signal to the user. The captured sound signal is analyzed to recognize speech intervals, in which the captured sound signal contains speech. During recognized speech intervals, at least one time derivative of an amplitude and/or a pitch of the captured sound signal is determined. The amplitude of the processed sound signal is temporarily increased, if the at least one derivative fulfills a predefined criterion.Type: ApplicationFiled: November 16, 2020Publication date: May 20, 2021Inventors: Maja Serman, Cecil Wilson, Eghart Fischer
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Publication number: 20210044908Abstract: A method for directional signal processing for a hearing aid. First and second input transducers generate first and second input signals from an ambient acoustic signal. A forward signal and a backward signal are generated from the first and second input signals and a first directional parameter is determined as a linear factor of a linear combination of the forward and backward signals. The first directional signal has a maximum attenuation in a first direction. A correction parameter is ascertained such that a second directional signal has a defined relative attenuation in the first direction. The second directional signal is generated from the forward signal and the backward signal with the first directional parameter and the correction parameter or with the first directional signal and the omnidirectional signal based on the correction parameter. An output signal of the hearing aid is generated based on the second directional signal.Type: ApplicationFiled: August 10, 2020Publication date: February 11, 2021Inventors: EGHART FISCHER, HOMAYOUN KAMKAR-PARSI, JENS HAIN
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Patent number: 10659890Abstract: A method for operating a hearing device. In the hearing device a first directional signal and a second directional signal are generated from an ambient sound signal. The first directional signal and the second directional signal are used to determine at a first response time a first adaptation coefficient for a first superposition of the first directional signal with the second directional signal for the purpose of noise suppression. It is intended here that the first directional signal and the second directional signal are used to determine at a second response time a second adaptation coefficient for a second superposition of the first directional signal with the second directional signal for the purpose of noise suppression. The first adaptation coefficient and the second adaptation coefficient are used to determine an output adaptation coefficient for forming an output signal by superposition of the first directional signal and the second directional signal.Type: GrantFiled: April 23, 2018Date of Patent: May 19, 2020Assignee: Sivantos Pte. Ltd.Inventors: Oliver Dressler, Eghart Fischer
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Patent number: 10412507Abstract: A method for operating a hearing device includes generating first and second input signals from a sound signal by using respective first and second input transducers, providing a first angle and an angular range and, with respect to frequency bands, based on the first and second input signals and first angle, forming an attenuation directional signal having relative attenuation at least for a second angle in the angular range about the first angle and thereby setting and an overlay parameter. A gain directional signal is formed based on the first and second input signals and the overlay parameter and/or second angle, having relative gain for the second angle. An angled directional signal is generated from the attenuation directional signal and the gain directional signal. An output signal is generated based on the angled directional signal. A hearing device and a binaural hearing device system are also provided.Type: GrantFiled: August 23, 2018Date of Patent: September 10, 2019Assignee: Sivantos Pte. Ltd.Inventor: Eghart Fischer
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Patent number: 10231063Abstract: In a binaural hearing aid system audio signals are transmitted between an antenna facility of a left ITE hearing aid and an antenna facility of a right ITE hearing aid. Binaural beam forming is based on a natural directivity of the pinna and/or based on a head shadowing effect. Each antenna facility has an antenna arrangement with a coil core made of magnetically permeable material, and extending along a longitudinal axis, a further electric hearing aid component, which emits electromagnetic interference radiation, and an at least partially planar shield made of magnetically permeable material. The shield is arranged between the antenna arrangement and the further hearing aid component transversely to the longitudinal axis of the coil core and the shield is arranged at a distance of 50 to 150 micrometers from the coil core, preferably 75 to 100 micrometers.Type: GrantFiled: September 6, 2017Date of Patent: March 12, 2019Assignee: Sivantos Pte. Ltd.Inventors: Peter Nikles, Juergen Reithinger, Homayoun Kamkar-Parsi, Eghart Fischer
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Publication number: 20190075405Abstract: A method for operating a hearing device includes generating first and second input signals from a sound signal by using respective first and second input transducers, providing a first angle and an angular range and, with respect to frequency bands, based on the first and second input signals and first angle, forming an attenuation directional signal having relative attenuation at least for a second angle in the angular range about the first angle and thereby setting and an overlay parameter. A gain directional signal is formed based on the first and second input signals and the overlay parameter and/or second angle, having relative gain for the second angle. An angled directional signal is generated from the attenuation directional signal and the gain directional signal. An output signal is generated based on the angled directional signal. A hearing device and a binaural hearing device system are also provided.Type: ApplicationFiled: August 23, 2018Publication date: March 7, 2019Inventor: EGHART FISCHER
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Publication number: 20180310105Abstract: A method for operating a hearing device. In the hearing device a first directional signal and a second directional signal are generated from an ambient sound signal. The first directional signal and the second directional signal are used to determine at a first response time a first adaptation coefficient for a first superposition of the first directional signal with the second directional signal for the purpose of noise suppression. It is intended here that the first directional signal and the second directional signal are used to determine at a second response time a second adaptation coefficient for a second superposition of the first directional signal with the second directional signal for the purpose of noise suppression. The first adaptation coefficient and the second adaptation coefficient are used to determine an output adaptation coefficient for forming an output signal by superposition of the first directional signal and the second directional signal.Type: ApplicationFiled: April 23, 2018Publication date: October 25, 2018Inventors: OLIVER DRESSLER, EGHART FISCHER
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Patent number: 10051382Abstract: 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.Type: GrantFiled: January 22, 2016Date of Patent: August 14, 2018Assignee: Sivantos Pte. Ltd.Inventors: Eghart Fischer, Ulrich Kornagel, Rainer Martin, Henning Puder, Alexander Schasse