Patents by Inventor Kai Wa Ng

Kai Wa Ng 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).

  • Speaker verification utilizing compressed audio formants
    Patent number: 6898568
    Abstract: A identity of a remote speaker is verified by receiving compressed audio formants from a remote Internet telephony client and comparing the compressed audio formants with sample compressed audio formants known to represent the person the remote speaker purports to be. The compressed audio formants include energy and pitch data characterizing the residue of the speaker uttering a predetermined pass phrase and a plurality of formant coefficients characterizing the resonance of the speaker.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: May 24, 2005
    Assignee: Innomedia PTE LTD
    Inventors: Kai Wa Ng, Nan Sheng Lin, Jing Zheng Ouyang
  • Speaker verification utilizing compressed audio formants
    Publication number: 20030014247
    Abstract: A identity of a remote speaker is verified by receiving compressed audio formants from a remote Internet telephony client and comparing the compressed audio formants with sample compressed audio formants known to represent the person the remote speaker purports to be. The compressed audio formants include energy and pitch data characterizing the residue of the speaker uttering a predetermined pass phrase and a plurality of formant coefficients characterizing the resonance of the speaker.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Kai Wa Ng, Nan Sheng Lin, Jing Zheng Ouyang