Patents by Inventor Dabien Liu

Dabien Liu 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).

  • Systems and methods for providing acoustic classification
    Patent number: 7337115
    Abstract: A speech recognition system receives an audio signal and detects various features of the audio signal. For example, the system classifies the audio signal into speech and non-speech portions, genders of speakers corresponding to the speech portions, and channel bandwidths used by the speakers. The system detects speaker turns based on changes in the speakers and assigns labels to the speaker turns. The system verifies the genders of the speakers and the channel bandwidths used by the speakers and identifies one or more languages associated with the audio signal. The system recognizes the speech portions of the audio signal based on the various features of the audio signal.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: February 26, 2008
    Assignees: Verizon Corporate Services Group Inc., BBN Technologies Corp.
    Inventors: Dabien Liu, Francis G. Kubala
  • Systems and methods for providing acoustic classification
    Publication number: 20040030550
    Abstract: A speech recognition system receives an audio signal and detects various features of the audio signal. For example, the system classifies the audio signal into speech and non-speech portions, genders of speakers corresponding to the speech portions, and channel bandwidths used by the speakers. The system detects speaker turns based on changes in the speakers and assigns labels to the speaker turns. The system verifies the genders of the speakers and the channel bandwidths used by the speakers and identifies one or more languages associated with the audio signal. The system recognizes the speech portions of the audio signal based on the various features of the audio signal.
    Type: Application
    Filed: July 2, 2003
    Publication date: February 12, 2004
    Inventors: Dabien Liu, Francis G. Kubala