Patents by Inventor Xingjun Wu

Xingjun Wu 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).

  • Method of encoding synthetic speech
    Patent number: 6014623
    Abstract: A method of synthetic speech, wherein the method forms a speech data base, the speech data base includes plural syllables, each of the syllables having a total frame number of the syllable and plural frame parameters. Each of the frame parameter is formed using an energy amount, a speech pitch period, and 10 Line Spectrum Pair (LSP) speech parameters. Thereafter, each LSP speech parameter is encoded using 4 bit Differential Quantization.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: January 11, 2000
    Assignee: United Microelectronics Corp.
    Inventors: Xingjun Wu, Yihe Sun
  • LSP speech synthesis device
    Patent number: 5873063
    Abstract: A speech synthesis application specific integrated circuit (ASIC) based on an Line Spectrum Pair (LSP) scheme. In the ASIC, the LSP parameter is encoded and two's complement fixed-point serial pipeline arithmetic operations with rounding are performed by an LSP speech synthesis digital filter. The operating rate demanded for the ASIC is low, and the elements of the ASIC are mostly in serial shift structure. So, the area of the LSP speech synthesis ASIC is much less than the conventional chip.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: February 16, 1999
    Assignee: United Microelectronics Corporation
    Inventors: Xingjun Wu, Yihe Sun