Patents by Inventor Adam Hersbach

Adam Hersbach 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: 8351626
    Abstract: A method of adjusting frequency-dependent amplification in an audio amplification apparatus. The audio amplification apparatus includes a forward transfer path (2) connectable to an output transducer, the forward transfer path including a frequency transposing element. The method includes the steps of: presenting stimuli to the output transducer at a plurality of frequencies; adjusting the stimulus level (C) at each frequency to meet a predefined loudness perception level or detection threshold of the listener; deriving an equal loudness contour of output transducer levels from the adjusted stimuli levels; and deriving the frequency-dependent amplification of levels of input signals (I) at each frequency.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: January 8, 2013
    Assignee: Phonak AG
    Inventors: Adam Hersbach, Hugh McDermott, Andrea Simpson
  • Patent number: 8170248
    Abstract: There is disclosed a sound processing device (300) configured to apply a frequency shift to at least one frequency component of a received sound signal and to amplify at least part of the received sound signal. The processing device (300) is also adapted to generate an estimated feedback signal for combination with the received sound signal via a phase inverting feedback canceller (314). Associated methods (400, 600) of processing a sound signal are also disclosed.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: May 1, 2012
    Assignee: Phonak AG
    Inventors: Adam Hersbach, Ralph Peter Derleth
  • Publication number: 20100310084
    Abstract: An hearing prosthesis configured to cancel received bone-conducted sound. The hearing prosthesis comprises: first and second matched microphones configured to be implanted in a recipient in a spaced arrangement such that the first microphone receives air-conducted sound signals and bone-conducted sound signals substantially simultaneously, and wherein the second microphone receives bone-conducted sound signals at substantially the same time as the first microphone and receives the air-conducted sound signals after a time delay. The time delay results in a relative phase difference between the air-conducted sound signals and the bone-conducted sound signals received by the second microphone. The prosthesis also comprises a noise cancellation system configured to cancel, based on the phase difference, the bone-conducted sound signals received by the first and second microphones.
    Type: Application
    Filed: February 11, 2009
    Publication date: December 9, 2010
    Inventor: Adam Hersbach
  • Publication number: 20100278356
    Abstract: A method of adjusting frequency-dependent amplification in an audio amplification apparatus. The audio amplification apparatus includes a forward transfer path (2) connectable to an output transducer, the forward transfer path including a frequency transposing element.
    Type: Application
    Filed: July 12, 2010
    Publication date: November 4, 2010
    Applicant: Phonak AG
    Inventors: Adam Hersbach, Hugh McDermott, Andrea Simpson
  • Patent number: 7778426
    Abstract: A method of processing a sound signal in an audio amplification device using frequency transposition, the method including the steps of: (a) receiving (11) an input sound signal, (b) determining (19) gains for amplifying the input sound signal at a plurality of input frequencies, (c) transposing (20) one or more of the input frequencies of the amplified sound signal to generate one or more output signals at transposed frequencies, (d) determining (31-33) the presence of an undesired feedback signal component resulting from the amplification and frequency transposition of the input sound signal at the input frequencies, and (e) correcting (34) the output signal at each of the transposed frequencies to compensate for the presence of the undesired feedback signal component.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: August 17, 2010
    Assignee: Phonak AG
    Inventors: Hugh McDermott, Adam Hersbach, Andrea Simpson
  • Patent number: 7756276
    Abstract: A method of adjusting frequency-dependent amplification in an audio amplification apparatus. The audio amplification apparatus includes a forward transfer path (2) connectable to an output transducer, the forward transfer path including a frequency transposing element. The method includes the steps of: presenting stimuli to the output transducer at a plurality of frequencies; adjusting the stimulus level (C) at each frequency to meet a predefined loudness perception level or detection threshold of the listener; deriving an equal loudness contour of output transducer levels from the adjusted stimuli levels; and deriving the frequency-dependent amplification of levels of input signals (I) at each frequency.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 13, 2010
    Assignee: Phonak AG
    Inventors: Adam Hersbach, Hugh McDermott, Andrea Simpson
  • Publication number: 20080279395
    Abstract: There is disclosed a sound processing device (300) configured to apply a frequency shift to at least one frequency component of a received sound signal and to amplify at least part of the received sound signal. The processing device (300) is also adapted to generate an estimated feedback signal for combination with the received sound signal via a phase inverting feedback canceller (314). Associated methods (400, 600) of processing a sound signal are also disclosed.
    Type: Application
    Filed: November 10, 2006
    Publication date: November 13, 2008
    Applicant: PHONAK AG
    Inventors: Adam Hersbach, Ralph Derleth
  • Publication number: 20070269066
    Abstract: To improve processing of audio signals such audio signal is split (7) in two parts, one thereof being processed in time-domain (5) and at least the other part by frequency-domain processing (3). Thereby, the advantages of both processing domains are specifically exploited for respective parts of the signal to be processed.
    Type: Application
    Filed: May 19, 2006
    Publication date: November 22, 2007
    Applicant: PHONAK AG
    Inventors: Ralph Peter Derleth, Adam Hersbach
  • Patent number: 7248711
    Abstract: A method for frequency transposition in a communication device Or a hearing device, respectively, is disclosed by transforming an acoustical signal into an electrical signal (s) and by transforming the electrical signal from time domain into frequency domain to obtain a spectrum (S). A frequency transposition is being applied to the spectrum (S) in order to obtain a transposed spectrum (S?), whereby the frequency transposition is being defined by a nonlinear frequency transposition function. Thereby, it is possible to transpose lower frequencies almost linearly, while higher frequencies are transposed more strongly. As a result thereof, harmonic relationships are not distorted in the lower frequency range, and at the same time, higher frequencies can be moved to a lower frequency range, namely to an audible frequency range of the hearing impaired person.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: July 24, 2007
    Assignee: Phonak AG
    Inventors: Silvia Allegro, Olegs Timms, Adam Hersbach, Hugh McDermott, Evert Dijkstra
  • Publication number: 20060253209
    Abstract: There is disclosed, in one aspect, a signal processing device (100) including: processing means (108) for generating a spectral representation of an input sound signal; frequency transposition means (110) for transposing at least part of the input signal's spectral representation to a transposed output frequency, said frequency transposition means (110) being configured to process the portion of the input signal spectral representation such that a phase relationship that existed in the input signal's spectral representation is substantially maintained in the transposed portion of the spectral representation; and synthesis means (112) for generating an output signal including the transposed portion of the input signal. Associated methods of processing a received sound signal are also disclosed.
    Type: Application
    Filed: April 25, 2006
    Publication date: November 9, 2006
    Applicant: Phonak AG
    Inventors: Adam Hersbach, Hugh McDermott, Ralph Derleth
  • Publication number: 20050226427
    Abstract: A method of adjusting frequency-dependent amplification in an audio amplification apparatus. The audio amplification apparatus includes a forward transfer path (2) connectable to an output transducer, the forward transfer path including a frequency transposing element.
    Type: Application
    Filed: March 23, 2005
    Publication date: October 13, 2005
    Inventors: Adam Hersbach, Hugh McDermott, Andrea Simpson
  • Publication number: 20050094827
    Abstract: A method of processing a sound signal in an audio amplification device using frequency transposition, the method including the steps of: (a) receiving (11) an input sound signal, (b) determining (19) gains for amplifying the input sound signal at a plurality of input frequencies, (c) transposing (20) one or more of the input frequencies of the amplified sound signal to generate one or more output signals at transposed frequencies, (d) determining (31-33) the presence of an undesired feedback signal component resulting from the amplification and frequency transposition of the input sound signal at the input frequencies, and (e) correcting (34) the output signal at each of the transposed frequencies to compensate for the presence of the undesired feedback signal component.
    Type: Application
    Filed: August 19, 2004
    Publication date: May 5, 2005
    Applicant: Phonak AG
    Inventors: Hugh McDermott, Adam Hersbach, Andrea Simpson
  • Publication number: 20040264721
    Abstract: A method for frequency transposition in a communication device Or a hearing device, respectively, is disclosed by transforming an acoustical signal into an electrical signal (s) and by transforming the electrical signal from time domain into frequency domain to obtain a spectrum (S). A frequency transposition is being applied to the spectrum (S) in order to obtain a transposed spectrum (S′), whereby the frequency transposition is being defined by a nonlinear frequency transposition function. Thereby, it is possible to transpose lower frequencies almost linearly, while higher frequencies are transposed more strongly. As a result thereof, harmonic relationships are not distorted in the lower frequency range, and at the same time, higher frequencies can be moved to a lower frequency range, namely to an audible frequency range of the hearing impaired person.
    Type: Application
    Filed: March 5, 2004
    Publication date: December 30, 2004
    Applicant: Phonak AG
    Inventors: Silvia Allegro, Olegs Timms, Adam Hersbach, Hugh McDermott, Evert Dijkstra