Patents by Inventor Petra Deutgen

Petra Deutgen 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).

  • System and method for modifying speech signals
    Patent number: 6704711
    Abstract: A system and method for speech signal enhancement upsamples a narrowband speech signal at a receiver to generate a wideband speech signal. The lower frequency range of the wideband speech signal is reproduced using the received narrowband speech signal. The received narrowband speech signal is analyzed to determine its formants and pitch information. The upper frequency range of the wideband speech signal is synthesized using information derived from the received narrowband speech signal.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: March 9, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Harald Gustafsson, Ulf Lindgren, Clas Thurban, Petra Deutgen
  • Speech band sampling rate expansion
    Patent number: 6507820
    Abstract: The present-invention relates to a method for the band expansion of speech for telephones, in particular for mobile telephones, by increasing the effective sampling rate of the speech signal by the insertion of additional samples and subsequent filtering of the expanded bandwidth speech signal.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: January 14, 2003
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Petra Deutgen
  • System and method for modifying speech signals
    Publication number: 20010044722
    Abstract: A system and method for speech signal enhancement upsamples a narrowband speech signal at a receiver to generate a wideband speech signal. The lower frequency range of the wideband speech signal is reproduced using the received narrowband speech signal. The received narrowband speech signal is analyzed to determine its formants and pitch information. The upper frequency range of the wideband speech signal is synthesized using information derived from the received narrowband speech signal.
    Type: Application
    Filed: January 5, 2001
    Publication date: November 22, 2001
    Inventors: Harald Gustafsson, Ulf Lindgren, Clas Thurban, Petra Deutgen