Patents by Inventor Andrey N. Trofimov

Andrey N. Trofimov 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 and apparatus for speech compression using multi-mode code excited linear predictive coding
    Patent number: 5729655
    Abstract: An apparatus and method of coding speech. The apparatus includes a first circuit being coupled to receive a first signal, the first signal corresponds to the speech signal. The first circuit is for generating a first set of parameters corresponding to the first frame. The apparatus includes a second circuit, being coupled to receive a second signal and the first set of parameters, the second signal corresponding to the speech signal, and the second circuit is for generating a third signal. The apparatus further includes a pulse train analyzer, being coupled to the second circuit, for generating a third match value, a third set of parameters, and a third excitation value. The apparatus further including a fourth circuit, being coupled to the second circuit, for generating a fourth match value, a fourth set of parameters, and a fourth excitation value. The apparatus further including a fifth circuit, being coupled to the third circuit and the fourth circuit, for selecting a mode corresponding to a match value.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: March 17, 1998
    Assignees: Alaris, Inc., G.T. Technology, Inc.
    Inventors: Victor D. Kolesnik, Andrey N. Trofimov, Irina E. Bocharova, Victor Yu Krachkovsky, Boris D. Kudryashov, Eugeny P. Ovsjannikov, Boris K. Trojanovsky, Sergei I. Kovalov
  • Method and apparatus for speech compression using multi-mode code excited linear predictive coding
    Patent number: 5602961
    Abstract: An apparatus and method of coding speech. The apparatus includes a first circuit being coupled to receive a first signal, the first signal corresponds to the speech signal. The first circuit is for generating a first set of parameters corresponding to the first frame. The apparatus includes a second circuit, being coupled to receive a second signal and the first set of parameters, the second signal corresponding to the speech signal, and the second circuit is for generating a third signal. The apparatus further includes a pulse train analyzer, being coupled to the second circuit, for generating a third match value, a third set of parameters, and a third excitation value. The apparatus further including a fourth circuit, being coupled to the second circuit, for generating a fourth match value, a fourth set of parameters, and a fourth excitation value. The apparatus further including a fifth circuit, being coupled to the third circuit and the fourth circuit, for selecting a mode corresponding to a match value.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: February 11, 1997
    Assignees: Alaris, Inc., GT Technology
    Inventors: Victor D. Kolesnik, Andrey N. Trofimov, Irina E. Bocharova, Victor Y. Krachkovsky, Boris D. Kudryashov, Eugeny P. Ovsjannikov, Boris K. Trojanovsky, Sergei I. Kovalov