Patents by Inventor Harprit Singh Chhatwal

Harprit Singh Chhatwal 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).

  • Noise suppressor
    Patent number: 7912567
    Abstract: A method of determining noise in an audio stream, the method comprising: acquiring a plurality of consecutive time frames of the audio stream each comprising samples of the audio stream; generating a discrete frequency spectrum for each frame responsive to the frame samples; partitioning the frequency spectrum of each frame into a plurality of same frequency bands; determining an audio energy for each frequency band in each frame; and determining an estimate of noise energy for each frequency band in a temporally last time frame responsive to a relatively small number of smallest values for the audio energy in the frequency band of the plurality of time frames.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: March 22, 2011
    Assignee: AudioCodes Ltd.
    Inventors: Harprit Singh Chhatwal, Hui Li, Andrew Linkens, Mark Smith
  • Noise suppressor
    Publication number: 20080219472
    Abstract: A method of determining noise in an audio stream, the method comprising: acquiring a plurality of consecutive time frames of the audio stream each comprising samples of the audio stream; generating a discrete frequency spectrum for each frame responsive to the frame samples; partitioning the frequency spectrum of each frame into a plurality of same frequency bands; determining an audio energy for each frequency band in each frame; and determining an estimate of noise energy for each frequency band in a temporally last time frame responsive to a relatively small number of smallest values for the audio energy in the frequency band of the plurality of time frames.
    Type: Application
    Filed: March 7, 2007
    Publication date: September 11, 2008
    Inventors: Harprit Singh Chhatwal, Hui Ll, Andrew Linkens, Mark Smith