Patents by Inventor Markus Fruhmann

Markus Fruhmann 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).

  • Method for the dynamic range compression of an audio signal and corresponding hearing device
    Patent number: 8116491
    Abstract: It should be possible to carry out dynamic range compression in hearing devices, and in particular in hearing aids, so it is free from distortion and practically in real time. For this purpose it is proposed that the modulation spectrum be obtained from the audio or input signal. The modulation spectrum is subsequently directly modified corresponding to a predefined compression function. Finally a modified or compressed output signal is recovered from the modified modulation spectrum. Alternatively a complex envelope may be obtained from the input signal, which is filtered using time-variant modulation filtering corresponding to a predefined compression rule. A distortion-free, compressed output signal may also be recovered herefrom.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: February 14, 2012
    Assignee: Siemens Audiologische Technik GmbH
    Inventors: Josef Chalupper, Markus Fruhmann
  • Method for the dynamic range compression of an audio signal and corresponding hearing device
    Publication number: 20090287492
    Abstract: It should be possible to carry out dynamic range compression in hearing devices, and in particular in hearing aids, so it is free from distortion and practically in real time. For this purpose it is proposed that the modulation spectrum be obtained from the audio or input signal. The modulation spectrum is subsequently directly modified corresponding to a predefined compression function. Finally a modified or compressed output signal is recovered from the modified modulation spectrum. Alternatively a complex envelope may be obtained from the input signal, which is filtered using time-variant modulation filtering corresponding to a predefined compression rule. A distortion-free, compressed output signal may also be recovered herefrom.
    Type: Application
    Filed: October 2, 2007
    Publication date: November 19, 2009
    Inventors: Josef Chalupper, Markus Fruhmann