Patents by Inventor TOBIAS DANIEL ROSENKRANZ

TOBIAS DANIEL ROSENKRANZ 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).

  • Patent number: 10674283
    Abstract: A method distorts the frequency of an input signal that is present as an audio signal. Here, the input signal is divided into a low-frequency signal component and a high-frequency signal component. These two signal components adjoin one another at a cut-off frequency. The high-frequency signal component is frequency-distorted and overlaid with the low-frequency signal component to form an output signal. An associated gain factor is modified, at least for an edge region, containing the cut-off frequency, of the high-frequency signal component and/or of the low-frequency signal component, such that a level difference between a signal level of the low-frequency signal component and a signal level of the frequency-distorted high-frequency signal component is increased.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: June 2, 2020
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Tobias Wurzbacher
  • Patent number: 10652670
    Abstract: A method operates a hearing aid which has at least one input transducer and at least one output transducer. An input signal is generated by the at least one input transducer from a sound signal in the environment. From the input signal, a classification of a hearing situation of the environment is determined and/or at least one of four parameters including tonality, loudness, stationarity and reverberation time is determined for the sound signal of the environment. A first intermediate signal is generated in dependence on the input signal by signal processing. Wherein by the classification of the hearing situation and by at least one of the four parameters of tonality, loudness, stationarity and reverberation time, at least one parameter of a frequency distortion is predetermined. The frequency distortion predetermined in this way is applied to the first intermediate signal.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: May 12, 2020
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Sebastian Best, Stefan Petrausch, Tobias Wurzbacher, Christoph Lueken, Nicola Cebulla, Christos Oreinos
  • Patent number: 10652668
    Abstract: A method performs frequency distortion of an audio signal. The audio signal is divided at at least one division frequency into a low-frequency band and a high-frequency band. A frequency-distorted signal is generated through respectively different distortions of frequencies for the high-frequency band and for the low-frequency band. The division frequency is selected such that it is located between two neighboring tones of a given tonal system.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: May 12, 2020
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Tobias Wurzbacher, Christos Oreinos
  • Publication number: 20190394579
    Abstract: A method of suppressing an acoustic reverberation in an audio signal includes providing an audio signal, carrying out a first level measurement of the audio signal and carrying out a second level measurement of the audio signal at least temporarily during the first level measurement. The first level measurement is carried out with a decay time and/or adjustment time that differs from a decay time or adjustment time of the second level measurement. An acoustic reverberation of the sound event in the audio signal is suppressed by attenuating the audio signal in response to a sound event in the audio signal. The attenuation is controlled as a function of a difference between the first level measurement and the second level measurement. A hearing device is also provided.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Inventors: TOBIAS DANIEL ROSENKRANZ, OLIVER DRESSLER
  • Publication number: 20190394583
    Abstract: In a method of audio reproduction in a hearing device, a first external signal is provided, a geometric data set is predetermined for a head shape of a user of the hearing device, and a first position is predetermined for a first virtual speaker. A propagation of the first external signal from the first virtual speaker to a first local unit of the hearing device is simulated based on the geometric data set for the head shape of the user and on the first position and a first virtual spatial signal is generated in the process. A first reproduction signal is generated from the first virtual spatial signal, and a first output transducer reproduces the first reproduction signal in the first local unit of the hearing device.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 26, 2019
    Inventors: BOON SIANG TAN, HOONG YIH CHAN, HENNING PUDER, TOBIAS DANIEL ROSENKRANZ
  • Publication number: 20190333530
    Abstract: A method reduces noise in an audio signal. In the method a signal component subsequent to the prediction time is predicted for a plurality of prediction times with reference to signal components of the audio signal that are respectively prior to the prediction time. A predicted audio signal is formed from the signal components respectively following a prediction time, and a noise-reduced audio signal is generated based on the predicted audio signal.
    Type: Application
    Filed: April 30, 2019
    Publication date: October 31, 2019
    Inventor: TOBIAS DANIEL ROSENKRANZ
  • Patent number: 10462581
    Abstract: A method for detecting a defect in a hearing instrument that has at least one first input transducer and at least one output transducer. A first transfer function of a first acoustic system, which includes the output transducer and the first input transducer, is determined, and at least a first reference function for the first transfer function is determined. The first transfer function is compared with the first reference function and a defect in the hearing instrument is detected based on the comparison. A hearing instrument with an input transducer and an output transducer is set up to carry out the method.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: October 29, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Wurzbacher, Tobias Daniel Rosenkranz
  • Patent number: 10397712
    Abstract: A method for the frequency distortion of an audio signal includes splitting the audio signal into a plurality of specified frequency bands, in which a band limit frequency is defined in each case by two respective immediately adjacent frequency bands. A first frequency band and a second frequency band lying immediately above the first frequency band are determined on the basis of the audio signal. A distortion of the frequencies differing from the distortion applied to signal components in the second frequency band is applied to signal components in the first frequency band, and a frequency-distorted signal is generated as a result. A method for suppressing an acoustic feedback in an acoustic system and a hearing aid are also provided.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: August 27, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Tobias Wurzbacher
  • Patent number: 10334371
    Abstract: 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.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: June 25, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Henning Puder, Tobias Daniel Rosenkranz, Tobias Wurzbacher
  • Patent number: 10313803
    Abstract: A method suppresses feedback in a hearing instrument. A microphone generates an input signal and a loudspeaker generates an acoustic signal which is partially fed back to the microphone via an acoustic feedback path. An intermediate signal is generated along a main signal path depending on the input signal, and an output signal is formed on the basis of the intermediate signal. A voice activity of a user is monitored, a transfer function of an electro-acoustic closed signal loop formed by the main signal path and the feedback path is estimated, that, depending on the transfer function of the closed signal loop and the voice activity of the user, the intermediate signal is decorrelated to form the output signal. A compensation signal is generated from the output signal and is fed to the input signal for feedback compensation, and the output signal is fed to the loudspeaker for reproduction.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 4, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Tobias Wurzbacher
  • Patent number: 10277991
    Abstract: A method operates a binaural hearing aid system with first and second hearing aids. A first audio signal of the first hearing aid is divided into a first high-frequency component and a first low-frequency component. A second audio signal of the second hearing aid is divided into a second high-frequency component and a second low-frequency component. A first provisional division frequency is specified for the division of the first audio signal into the first high-frequency component and the first low-frequency component. A second provisional division frequency is specified for the division of the second audio signal into the second high-frequency component and the second low-frequency component. A division frequency is defined on the basis of the first provisional division frequency and the second provisional division frequency. The first and second audio signals are divided at the division frequency into respective high-frequency components and low-frequency components.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: April 30, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Tobias Wurzbacher, Christoph Lueken, Christos Oreinos
  • Patent number: 10257621
    Abstract: A method for operating a hearing system is defined, wherein a sound signal emanating from a sound source is measured by a plurality of microphones, which are fitted in different devices. Each of the microphones detects the sound signal and generates therefrom a microphone signal. The hearing system is binaural and two of the devices are each embodied as a hearing aid. For at least the two microphone signals from the microphones of the hearing aids there is determined an individual reverberation time in each case, and the individual reverberation times are combined in a dataset from which a general reverberation time is determined. An operating parameter of the hearing system is adjusted according to the general reverberation time. A corresponding hearing system is also defined.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 9, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Stefan Petrausch
  • Patent number: 10231064
    Abstract: A method improves a picked-up signal in a hearing system. The hearing system has at least one hearing device, particularly a hearing aid. The hearing aid device has an associated first directional microphone that has an adjustable first directional characteristic with a preferential direction. The first directional microphone converts sound into a first signal that is adopted in the picked-up signal. A speech activity of a user of the hearing system is monitored, and recognition of a speech activity of the user prompts the preferential direction of the first directional characteristic to be adjusted in comparison with a frontal direction of the user such that the sound sensitivity of the first directional microphone undergoes attenuation in the frontal direction.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: March 12, 2019
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Homayoun Kamkar-Parsi, Marko Lugger
  • Publication number: 20190075403
    Abstract: A method for detecting a defect in a hearing instrument that has at least one first input transducer and at least one output transducer. A first transfer function of a first acoustic system, which includes the output transducer and the first input transducer, is determined, and at least a first reference function for the first transfer function is determined. The first transfer function is compared with the first reference function and a defect in the hearing instrument is detected based on the comparison. A hearing instrument with an input transducer and an output transducer is set up to carry out the method.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 7, 2019
    Inventors: TOBIAS WURZBACHER, TOBIAS DANIEL ROSENKRANZ
  • Patent number: 10123135
    Abstract: 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.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 6, 2018
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Henning Puder
  • Publication number: 20180255405
    Abstract: A method distorts the frequency of an input signal that is present as an audio signal. Here, the input signal is divided into a low-frequency signal component and a high-frequency signal component. These two signal components adjoin one another at a cut-off frequency. The high-frequency signal component is frequency-distorted and overlaid with the low-frequency signal component to form an output signal. An associated gain factor is modified, at least for an edge region, containing the cut-off frequency, of the high-frequency signal component and/or of the low-frequency signal component, such that a level difference between a signal level of the low-frequency signal component and a signal level of the frequency-distorted high-frequency signal component is increased.
    Type: Application
    Filed: February 9, 2018
    Publication date: September 6, 2018
    Inventors: TOBIAS DANIEL ROSENKRANZ, TOBIAS WURZBACHER
  • Publication number: 20180255407
    Abstract: A method for the frequency distortion of an audio signal includes splitting the audio signal into a plurality of specified frequency bands, in which a band limit frequency is defined in each case by two respective immediately adjacent frequency bands. A first frequency band and a second frequency band lying immediately above the first frequency band are determined on the basis of the audio signal. A distortion of the frequencies differing from the distortion applied to signal components in the second frequency band is applied to signal components in the first frequency band, and a frequency-distorted signal is generated as a result. A method for suppressing an acoustic feedback in an acoustic system and a hearing aid are also provided.
    Type: Application
    Filed: February 26, 2018
    Publication date: September 6, 2018
    Inventors: TOBIAS DANIEL ROSENKRANZ, TOBIAS WURZBACHER
  • Patent number: 10063980
    Abstract: A method improves a picked-up signal in a hearing system. The hearing system has at least one hearing device, particularly a hearing aid. The hearing aid device has an associated first directional microphone that has an adjustable first directional characteristic with a preferential direction. The first directional microphone converts sound into a first signal that is adopted in the picked-up signal. A speech activity of a user of the hearing system is monitored, and recognition of a speech activity of the user prompts the preferential direction of the first directional characteristic to be adjusted in comparison with a frontal direction of the user such that the sound sensitivity of the first directional microphone undergoes attenuation in the frontal direction.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 28, 2018
    Assignee: Sivantos Pte. Ltd.
    Inventors: Tobias Daniel Rosenkranz, Homayoun Kamkar-Parsi, Marko Lugger
  • Publication number: 20180213337
    Abstract: A method improves a picked-up signal in a hearing system. The hearing system has at least one hearing device, particularly a hearing aid. The hearing aid device has an associated first directional microphone that has an adjustable first directional characteristic with a preferential direction. The first directional microphone converts sound into a first signal that is adopted in the picked-up signal. A speech activity of a user of the hearing system is monitored, and recognition of a speech activity of the user prompts the preferential direction of the first directional characteristic to be adjusted in comparison with a frontal direction of the user such that the sound sensitivity of the first directional microphone undergoes attenuation in the frontal direction.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Inventors: TOBIAS DANIEL ROSENKRANZ, HOMAYOUN KAMKAR-PARSI, MARKO LUGGER
  • Publication number: 20180213336
    Abstract: A method operates a binaural hearing aid system with first and second hearing aids. A first audio signal of the first hearing aid is divided into a first high-frequency component and a first low-frequency component. A second audio signal of the second hearing aid is divided into a second high-frequency component and a second low-frequency component. A first provisional division frequency is specified for the division of the first audio signal into the first high-frequency component and the first low-frequency component. A second provisional division frequency is specified for the division of the second audio signal into the second high-frequency component and the second low-frequency component. A division frequency is defined on the basis of the first provisional division frequency and the second provisional division frequency. The first and second audio signals are divided at the division frequency into respective high-frequency components and low-frequency components.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 26, 2018
    Inventors: TOBIAS DANIEL ROSENKRANZ, TOBIAS WURZBACHER, CHRISTOPH LUEKEN, CHRISTOS OREINOS