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    Method and apparatus for characterizing inhalation noise and calculating parameters based on the characterization
    52.
    发明专利
    Method and apparatus for characterizing inhalation noise and calculating parameters based on the characterization 未知

    公开(公告)号：AU2005262586A1

    公开(公告)日：2006-01-19

    申请号：AU2005262586

    申请日：2005-06-09

    Applicant: MOTOROLA INC

    Inventor： KUSHNER WILLIAM M ,  JASIUK MARK A ,  HARTON SARA M

    IPC: G10L15/00

    Abstract: A method for characterizing inhalation noise within a pressurized air delivery system, the method including the steps of: generating an inhalation noise model ( 912, 1012 ) based on inhalation noise; receiving an input signal ( 802 ) that includes inhalation noise comprising at least one inhalation noise burst; comparing ( 810 ) the input signal to the noise model to obtain a similarity measure; comparing the similarity measure to at least one threshold ( 832, 834 ) to detect the at least one inhalation noise burst; and characterizing ( 1354, 1356 ) the at least one detected inhalation noise burst.

    METHOD AND APPARATUS FOR CODING GAIN INFORMATION IN A SPEECH CODING SYSTEM
    54.
    发明专利
    METHOD AND APPARATUS FOR CODING GAIN INFORMATION IN A SPEECH CODING SYSTEM 未知

    公开(公告)号：AU2003291397A1

    公开(公告)日：2004-06-03

    申请号：AU2003291397

    申请日：2003-11-06

    Applicant: MOTOROLA INC

    Inventor： MITTAL UDAR ,  JASIUK MARK A ,  ASHLEY JAMES P

    IPC: G10L19/08 ,  G10L19/04

    Abstract: A speech coder that performs analysis-by-synthesis coding of a signal determines gain parameters for each constituent component of multiple constituent components of a synthetic excitation signal. The speech coder generates a target vector based on an input signal. The speech coder further generates multiple constituent components associated with the synthetic excitation signal, wherein one constituent component of the multiple constituent components is based on a shifted version of another constituent component of the multiple constituent components. The speech coder further evaluates an error criteria based on the target vector and the multiple constituent components to determine a gain associated with each constituent component of the multiple constituent components.

    Vector quantization system for speech encoding/decoding
    56.
    发明专利
    Vector quantization system for speech encoding/decoding 未知

    公开(公告)号：GB2364870A

    公开(公告)日：2002-02-06

    申请号：GB0017145

    申请日：2000-07-13

    Applicant: MOTOROLA INC

    Inventor： GIBBS JONATHAN ALASTAIR ,  JASIUK MARK A ,  EVANS ALUN CHRISTOPHER ,  SMITH AARON

    IPC: G10L19/07 ,  G10L19/06

    Abstract: A method of providing robust quantization of speech spectral parameters tolerant to spectral balance and speaker variations, includes the steps of, for each of a plurality of line spectral frequencies (LSFs) of a speech spectrum, quantizing (14) the displacement (12) of the LSF from an estimate (42) of its long-term mean, and, at an encoder (10) and a decoder (20), reconstructing (22,34) an estimate of the LSF from the quantized displacement and the long-term LSF mean estimate, and filtering (26,30,32) the reconstructed LSF estimate, thereby providing a subsequent long-term LSF mean estimate. In an alternative (fig 2), a prediction error, derived from the LSF from which a current short-term LSF mean value and a current moving average predicted LSF estimate have been subtracted, is quantized and, at an encoder and a decoder, the prediction error is dequantized and a next-current short-term LSF mean value and a next-current moving average predicted LSF estimate are determined.

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