Patents by Inventor Ananthapadamanabhan A. Kandhadai

Ananthapadamanabhan A. Kandhadai 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).

  • Sub-sampled excitation waveform codebooks
    Patent number: 7698132
    Abstract: Methods and apparatus are presented for reducing the number of bits needed to represent an excitation waveform. An acoustic signal in an analysis frame is analyzed to determine whether it is a band-limited signal. A sub-sampled sparse codebook is used to generate the excitation waveform if the acoustic signal is a band-limited signal. The sub-sampled sparse codebook is generated by decimating permissible pulse locations from the codebook track in accordance with the frequency characteristic of the acoustic signal.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: April 13, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Ananthapadamanabhan A. Kandhadai, Sharath Manjunath, Khaled El-Maleh