Patents by Inventor Kim Hong Kook

Kim Hong Kook 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).

  • Pseudo-cepstral adaptive short-term post-filters for speech coders
    Patent number: 7269553
    Abstract: Methods and systems for filtering synthesized or reconstructed speech are implemented. A filter based on a set of linear predictive coding (LPC) coefficients is constructed by transforming the LPC coefficients to the pseudo-cepstrum, a domain existing between LPC domain and the line spectral frequency (LSF) domain. The resulting filter can emphasize spectral frequencies associated with various formants, or spectral peaks, of an inverse transfer function relating to the LPC coefficients, and can de-emphasize spectral frequencies associated with various spectral minima, or spectral valleys, of the inverse transfer function relating to the LPC coefficients.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: September 11, 2007
    Assignee: AT&T Corp.
    Inventors: Hong-Goo Kang, Kim Hong Kook