Patents by Inventor Christian Park KJELDSEN

Christian Park KJELDSEN 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: 8682013
    Abstract: In digital hearing devices, it is common to reduce the preamplifier gain when very loud signals are received in order to avoid clipping. It is known to temporarily reduce the preamplifier gain with fast attack and release times when a clipping of the input signal in the digitizer is expected. Perceived signal quality of the audible signal provided to the user of the hearing device is herein improved by simultaneously providing relatively fast and relatively slow temporary reductions of the amplifier gain such that the slow gain reductions reduce the occurrences of fast gain reductions. This allows the hearing device to provide a high quality sound to the user where clipping is reduced due to the fast gain reductions and where signal artifacts, such as pumping and switching noise, produced by the fast gain reductions is reduced due to the slow gain reductions.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 25, 2014
    Assignee: Oticon A/S
    Inventors: Christian Park Kjeldsen, Jørn Skovgaard
  • Publication number: 20120263329
    Abstract: In digital hearing devices, it is common to reduce the preamplifier gain when very loud signals are received in order to avoid clipping. It is known to temporarily reduce the preamplifier gain with fast attack and release times when a clipping of the input signal in the digitiser is expected. Perceived signal quality of the audible signal provided to the user of the hearing device is herein improved by simultaneously providing relatively fast and relatively slow temporary reductions of the amplifier gain such that the slow gain reductions reduce the occurrences of fast gain reductions. This allows the hearing device to provide a high quality sound to the user where clipping is reduced due to the fast gain reductions and where signal artefacts, such as pumping and switching noise, produced by the fast gain reductions is reduced due to the slow gain reductions.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 18, 2012
    Applicant: OTICON A/S
    Inventors: Christian Park KJELDSEN, Jørn SKOVGAARD