Patents by Inventor Martin Sieler

Martin Sieler 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 masking defects in a stream of audio data
    Patent number: 6421802
    Abstract: In a method for concealing errors in an audio data stream the occurrence of an error is detected in the audio data stream, audio data prior to the occurrence of the fault being intact audio data. Thereafter a spectral energy of a subgroup of the intact audio data is calculated. After forming a pattern for substitute data on the basis of the spectral energy calculated for the subgroup of the intact audio data, substitute data for erroneous or missing audio data which correspond to the subgroup are created on the basis of the pattern.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: July 16, 2002
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Wolfgang Schildbach, Jürgen Herre, Martin Sieler, Karlheinz Brandenburg, Heinz Gerhäuser
  • Process of low sampling rate digital encoding of audio signals
    Patent number: 6185539
    Abstract: In a method for coding an audio signal digitized at a low sampling rate to obtain time domain audio samples. A frequency domain representation of the time domain audio samples is produced. The frequency domain representation includes successive frequency lines. These frequency lines are grouped into a plurality of scale factor bands. The successive frequency lines in a scale factor band are coded with the same scale factor. A plurality of regions is formed by grouping the scale factor bands, wherein successive scale factor bands form a region within which all the scale factors are coded with the same number of bits, which is determined according to the largest scale factor of the region. The scale factors assigned to scale factor bands within the highest region that includes the higher frequency successive frequency lines are set to zero. The frequency lines in the highest region are coded using the zero-valued scale factors that correspond to a multiplication factor of 1.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: February 6, 2001
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Oliver Kunz, Martin Dietz, Rainer Buchta, Jürgen Zeller, Karlheinz Brandenburg, Martin Sieler, Heinz Gerhäuser
  • Process of low sampling rate digital encoding of audio signals
    Patent number: RE44897
    Abstract: In a method for coding an audio signal digitized at a low sampling rate to obtain time domain audio samples. A frequency domain representation of the time domain audio samples is produced. The frequency domain representation includes successive frequency lines. These frequency lines are grouped into a plurality of scale factor bands. The successive frequency lines in a scale factor band are coded with the same scale factor. A plurality of regions is formed by grouping the scale factor bands, wherein successive scale factor bands form a region within which all the scale factors are coded with the same number of bits, which is determined according to the largest scale factor of the region. The scale factors assigned to scale factor bands within the highest region that includes the higher frequency successive frequency lines are set to zero. The frequency lines in the highest region are coded using the zero-valued scale factors that correspond to a multiplication factor of 1.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: May 13, 2014
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Oliver Kunz, Martin Dietz, Rainer Buchta, Jurgen Zeller, Karlheinz Brandenburg, Martin Sieler, Heinz Gerhauser