Patents by Inventor Homayoun Kamkar Parsi

Homayoun Kamkar Parsi 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).

  • Publication number: 20160066102
    Abstract: A hearing aid device and a method for operating the hearing aid device. The hearing aid device has an acousto-electrical transducer, a signal processing unit, an electro-acoustic transducer and a unit for recognizing a wearer's own voice. The hearing aid device detects and recognizes the wearer's own voice by way of the recognition unit and, when the wearer's own voice has been detected, operates the signal processing unit with a modified signal processing parameter that is modified such that the sound of the wearer's own voice is improved.
    Type: Application
    Filed: August 28, 2015
    Publication date: March 3, 2016
    Inventors: ULRICH GIESE, SEBASTIAN PAPE, MARKO LUGGER, HOMAYOUN KAMKAR PARSI
  • Patent number: 9277333
    Abstract: A method operates a hearing aid system and the hearing aid system has at least two hearing aid devices, between which a signal path is provided, and with at least one signal processing unit, which is provided to process audio signals. In the method the signal processing apparatus filters first audio signals with a filter predetermined for a defined spatial direction, from which a useful signal arrives, so that second audio signals are generated, in which the components of the useful signal in the second audio signals are equalized to a greater degree than in the first audio signals. The second audio signals are then filtered with an adaptive filter, so that third audio signals are generated, in which the components of the useful signal are equalized to an even greater degree than in the second audio signals.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: March 1, 2016
    Assignee: Sivantos Pte. Ltd.
    Inventors: Marc Aubreville, Eghart Fischer, Homayoun Kamkar Parsi, Walter Kellermann, Stefan Meier, Henning Puder, Klaus Reindl
  • Patent number: 9253581
    Abstract: A hearing aid system has at least two hearing aid devices to be worn on both sides of a wearer's head. The hearing aid devices have a transducer for picking up an acoustic signal and converting same into a first audio signal in each case. A signal processing unit processes audio signals received from each hearing aid device through a signal connection. The signal processing unit evaluates a signal component from a preferred direction in relation to the head of the wearer in the first audio signals. By way of the first audio signals the signal processing unit generates a first binaural directional microphone signal and adjusts its directional characteristic as a function of the evaluation.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: February 2, 2016
    Assignee: Sivantos Pte. Ltd.
    Inventors: Marc Aubreville, Eghart Fischer, Homayoun Kamkar Parsi
  • Patent number: 9253571
    Abstract: A hearing apparatus for a binaural supply contains a first earhook to be worn on one ear, having a plurality of microphones, and a first signal processing device which is configured to generate a local earpiece signal for an earpiece of the first earhook from microphone signals of the microphones by use of multichannel signal processing of each of the microphone signals. A beam forming device and a transmission device are additionally provided in the first earhook. The beam forming device is configured to generate a directional output signal from the microphone signals by signal processing which has fewer channels than that of the first signal processing device, and wherein the transmission device is set up to transmit the directional output signal as an electrical or electromagnetic signal from the first earhook.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: February 2, 2016
    Assignee: Sivantos Pte. Ltd.
    Inventors: Marc Aubreville, Eghart Fischer, Homayoun Kamkar Parsi, Stefan Petrausch
  • Publication number: 20150264478
    Abstract: Signals free of wind noise should be made available with a short latency time in particular for binaural hearing device provision. To this end a method and a hearing apparatus are proposed, in which in a first branch with a first latency time the wind is analyzed and in a second branch with a shorter, second latency time the wind is reduced for a transmission signal.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 17, 2015
    Inventors: MARC AUBREVILLE, EGHART FISCHER, HOMAYOUN KAMKAR PARSI, STEFAN PETRAUSCH
  • Publication number: 20140341407
    Abstract: A method for beam-forming for a hearing aid system is disclosed. The hearing aid system has a left and a right hearing aid device for disposal on a head of a wearer. The hearing aid devices each have microphones for converting the sound into a left and a right input signal and also a signal processing device which receives the two input signals. In the method a number of different linear combinations of the left and the right input signal are provided, are assessed according to a predetermined signal criterion and, in dependence thereof, one of the linear combinations is selected as a beam signal.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 20, 2014
    Applicant: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.
    Inventors: EGHART FISCHER, HOMAYOUN KAMKAR PARSI
  • Publication number: 20140314260
    Abstract: A hearing aid system has at least two hearing aid devices to be worn on both sides of a wearer's head. The hearing aid devices have a transducer for picking up an acoustic signal and converting same into a first audio signal in each case. A signal processing unit processes audio signals received from each hearing aid device through a signal connection. The signal processing unit evaluates a signal component from a preferred direction in relation to the head of the wearer in the first audio signals. By way of the first audio signals the signal processing unit generates a first binaural directional microphone signal and adjusts its directional characteristic as a function of the evaluation.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 23, 2014
    Applicant: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.
    Inventors: MARC AUBREVILLE, EGHART FISCHER, HOMAYOUN KAMKAR PARSI
  • Publication number: 20140314259
    Abstract: A method operates a hearing aid system and the hearing aid system has at least two hearing aid devices, between which a signal path is provided, and with at least one signal processing unit, which is provided to process audio signals. In the method the signal processing apparatus filters first audio signals with a filter predetermined for a defined spatial direction, from which a useful signal arrives, so that second audio signals are generated, in which the components of the useful signal in the second audio signals are equalized to a greater degree than in the first audio signals. The second audio signals are then filtered with an adaptive filter, so that third audio signals are generated, in which the components of the useful signal are equalized to an even greater degree than in the second audio signals.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 23, 2014
    Applicant: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.
    Inventors: MARC AUBREVILLE, EGHART FISCHER, HOMAYOUN KAMKAR PARSI, WALTER KELLERMANN, STEFAN MEIER, HENNING PUDER, KLAUS REINDL
  • Publication number: 20140314258
    Abstract: A hearing aid system is enabled for binaural microphone adjustment by way of the wearer's own voice. The hearing aid system has a first and a second hearing aid having a first and a second acousto-electric converter. The converters have a signal link with a signal processing unit which determines and compensates for signal deviations caused by the first and second acousto-electric converters on the basis of signals from the wearer's own voice. The wearer's own voice is recognized by a special facility.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 23, 2014
    Applicant: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.
    Inventors: HOMAYOUN KAMKAR PARSI, MARKO LUGGER
  • Patent number: 8660281
    Abstract: A method for a multi microphone noise reduction in a complex noisy environment is proposed. A left and a right noise power spectral density for a left and a right noise input frame is estimated for computing a diffuse noise gain. A target speech power spectral density is extracted from the noise input frame. A directional noise gain is calculated from the target speech power spectral density and the noise power spectral density. The noisy input frame is filtered by Kalman filtering method. A Kalman based gain is generated from the Kalman filtered noisy frame and the noise power spectral density. A spectral enhancement gain is computed by combining the diffuse noise gain, the directional noise gain, and the Kalman based gain. The method reduces different combinations of diverse background noise and increases speech intelligibility, while guaranteeing to preserve the interaural cues of the target speech and directional background noises.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: February 25, 2014
    Assignee: University of Ottawa
    Inventors: Martin Bouchard, Homayoun Kamkar Parsi
  • Publication number: 20130259239
    Abstract: A hearing apparatus for a binaural supply contains a first earhook to be worn on one ear, having a plurality of microphones, and a first signal processing device which is configured to generate a local earpiece signal for an earpiece of the first earhook from microphone signals of the microphones by use of multichannel signal processing of each of the microphone signals. A beam forming device and a transmission device are additionally provided in the first earhook. The beam forming device is configured to generate a directional output signal from the microphone signals by signal processing which has fewer channels than that of the first signal processing device, and wherein the transmission device is set up to transmit the directional output signal as an electrical or electromagnetic signal from the first earhook.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 3, 2013
    Applicant: SIEMENS MEDICAL INSTRUMENTS PTE. LTD.
    Inventors: MARC AUBREVILLE, EGHART FISCHER, HOMAYOUN KAMKAR PARSI, STEFAN PETRAUSCH
  • Publication number: 20110305345
    Abstract: A method for a multi microphone noise reduction in a complex noisy environment is proposed. A left and a right noise power spectral density for a left and a right noise input frame is estimated for computing a diffuse noise gain. A target speech power spectral density is extracted from the noise input frame. A directional noise gain is calculated from the target speech power spectral density and the noise power spectral density. The noisy input frame is filtered by Kalman filtering method. A Kalman based gain is generated from the Kalman filtered noisy frame and the noise power spectral density. A spectral enhancement gain is computed by combining the diffuse noise gain, the directional noise gain, and the Kalman based gain. The method reduces different combinations of diverse background noise and increases speech intelligibility, while guaranteeing to preserve the interaural cues of the target speech and directional background noises.
    Type: Application
    Filed: February 3, 2010
    Publication date: December 15, 2011
    Applicant: UNIVERSITY OF OTTAWA
    Inventors: Martin Bouchard, Homayoun Kamkar Parsi