Patents by Inventor Thomas Jacobsson

Thomas Jacobsson 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).

  • Sound synthesiser
    Publication number: 20060005690
    Abstract: A sound synthesizer is provided that reduces the computational requirements of a synthesizer with a high degree of polyphony, while ensuring that audible artifacts are kept to a minimum. The synthesizer comprises a plurality of samples stored in a memory; a plurality of voices each comprising means for calculating an output using a plurality of samples selected from the plurality of samples stored in the memory; wherein a voice is active when calculating an output; wherein the number of samples selected by the means for calculating depends upon the number of active voices.
    Type: Application
    Filed: August 11, 2003
    Publication date: January 12, 2006
    Inventors: Thomas Jacobsson, Andrej Petef, Alberto Jimenez Felstrom
  • Method for removing aliasing in wave table based synthesizers
    Patent number: 6900381
    Abstract: A method and apparatus are provided for changing the pitch of a tabulated waveform in wavetable based synthesizers. Harmonics that normally would be aliased before a transposition process are removed by a discrete time low pass filter at the same time that the tabulated waveform is reconstruction and resampling.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: May 31, 2005
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ulf Lindgren, Alberto Jimenez Feltström, Thomas Jacobsson
  • Method for removing aliasing in wave table based synthesisers
    Publication number: 20030033338
    Abstract: A method and apparatus are provided for changing the pitch of a tabulated waveform in wavetable based synthesizers. Harmonics that normally would be aliased before a transposition process are removed by a discrete time low pass filter at the same time that the tabulated waveform is reconstruction and resampling.
    Type: Application
    Filed: May 16, 2002
    Publication date: February 13, 2003
    Inventors: Ulf Lindgren, Alberto Jimenez Feltstrom, Thomas Jacobsson