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    METODO Y APARATO PARA ESTIMAR ENERGIA DE BANDA ALTA EN UN SISTEMA DE EXTENSION DE ANCHO DE BANDA.
    81.
    发明专利
    METODO Y APARATO PARA ESTIMAR ENERGIA DE BANDA ALTA EN UN SISTEMA DE EXTENSION DE ANCHO DE BANDA. 未知

    公开(公告)号：MX2010008288A

    公开(公告)日：2010-08-31

    申请号：MX2010008288

    申请日：2009-02-05

    Applicant: MOTOROLA INC

    Inventor： JASIUK MARK A ,  RAMABADRAN TENKASI V

    IPC: G10L21/02

    Abstract: Un método (100) incluye recibir (101) una señal de audio digital de entrada que comprende una señal de banda angosta; la señal de audio digital de entrada es procesada (102) para generar una señal de audio digital procesada; se determina (103) un estimado del nivel de energía de banda alta correspondiente a una señal de audio digital de entrada de ancho de banda extendido; se realiza la modificación del nivel de energía de banda alta estimado con base en una precisión de la estimación y/o características de la señal de banda angosta (104); una señal de audio digital de banda alta es generada con base en el estimado modificado del nivel de energía de banda alta y un espectro de banda alta estimado correspondiente al estimado modificado del nivel de energía de banda alta (105).

    METODO Y APARATO PARA DETECTAR Y ATENUAR RUIDO DE INHALACION EN UN SISTEMA DE COMUNICACION.
    82.
    发明专利
    METODO Y APARATO PARA DETECTAR Y ATENUAR RUIDO DE INHALACION EN UN SISTEMA DE COMUNICACION. 未知

    公开(公告)号：MXPA06015240A

    公开(公告)日：2007-03-26

    申请号：MXPA06015240

    申请日：2005-06-06

    Applicant: MOTOROLA INC

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

    IPC: G10L21/02 ,  H04B15/00

    Abstract: Un metodo para detectar y atenuar ruido de inhalacion en un sistema de comunicacion acoplado a un sistema de suministro de aire presurizado, el metodo incluye los pasos de: generar un modelo de ruido de inhalacion (912, 1012) con base en el ruido de inhalacion; recibir una sefial de entrada (802) que incluya ruido de inhalacion; comparar (810) la sefial de entrada con el modelo de ruido para obtener una medida de similitud; determinar (854) un factor de ganancia con base en la medida de similitud; y modificar (852) la senal de entrada con base en el factor de ganancia, en donde el ruido de inhalacion en la senal de entrada es atenuado con base en el factor de ganancia.

    83.
    发明专利
    未知

    公开(公告)号：DE60305907D1

    公开(公告)日：2006-07-20

    申请号：DE60305907

    申请日：2003-02-14

    Applicant: MOTOROLA INC

    Inventor： RAMABADRAN TENKASI V ,  SMITH AARON M ,  JASIUK MARK A

    IPC: G10L19/02 ,  G10L19/04 ,  G10L19/06 ,  G10L19/08

    Abstract: A system or method for modeling a signal, such as a speech signal, in which harmonic frequencies and amplitudes are identified and the harmonic magnitudes are interpolated to obtain spectral magnitudes at a set of fixed frequencies. An inverse transform is applied to the spectral magnitudes to obtain a pseudo auto-correlation sequence, from which linear prediction coefficients are calculated. From the linear prediction coefficients, model harmonic magnitudes are generated by sampling the spectral envelope defined by the linear prediction coefficients. A set of scale factors are then calculated as the ratio of the harmonic magnitudes to the model harmonic magnitudes and interpolated to obtain a second set of scale factors at the set of fixed frequencies. The spectral envelope magnitudes at the set of fixed frequencies are multiplied by the second set of scale factors to obtain new spectral magnitudes and the process is iterated to obtain final linear prediction coefficients. The signal is modeled by the linear prediction coefficients.

    85.
    发明专利
    未知

    公开(公告)号：AT208082T

    公开(公告)日：2001-11-15

    申请号：AT92917101

    申请日：1992-08-03

    Applicant: MOTOROLA INC

    Inventor： GERSON IRA A ,  WINTER ERIC H ,  JASIUK MARK A

    IPC: G10L19/04 ,  G10L19/00 ,  G10L19/06 ,  G10L19/12 ,  G10L19/14 ,  H03M13/35

    Abstract: A method for protecting information bits wherein input data bits, at least some of which are to be protected, are sorted based upon information determined from a subset of the input data bits. An error control coding technique is applied to at least some of the sorted bits. In the preferred embodiment, an input data stream of voice coder bits is separated into arrays of bits. A first array (302) comprises voice coder bits needing error protection, with the bits arranged in order of importance determined by voicing mode. The second array (303) comprises bits that will not be error protected. The bits from the first array are provided to the input of an encoder (304), then the encoded bits are combined (305) with the bits from the second array (303) to form a bit stream.

    Vector sum excited linear predictive coding speech coder
    87.
    发明专利
    Vector sum excited linear predictive coding speech coder 未知

    公开(公告)号：DE4447647C2

    公开(公告)日：2000-05-11

    申请号：DE4447647

    申请日：1994-03-07

    Applicant: MOTOROLA INC

    Inventor： GERSON IRA A ,  JASIUK MARK A ,  HARTMAN MATTHEW A

    IPC: G10L19/06 ,  G10L19/083 ,  G10L19/135 ,  G10L25/06 ,  G10L25/24 ,  G10L19/04

    Abstract: The method comprises the steps of segmenting the optimal reflection coefficient vector into two segments, and providing an array of predetermined vectors of coefficients, with each vector having multiple elements. A first vector is selected from the array. The residual error is calculated corresp. to the first selected vector. The above steps are repeated for each vector in the array. A vector is chosen from the first array with the lowest residual error, which defines the initial conditions for the second segment. A second array of predetermined vectors of reflection coefficients are provided, each vector having multiple elements. The above steps are repeated for the second segment, using the second array of vectors so forming a second chosen vector.

    METHOD FOR GENERATING A SPECTRAL NOISE WEIGHTING FILTER FOR USE IN A SPEECH CODER
    88.
    发明专利
    METHOD FOR GENERATING A SPECTRAL NOISE WEIGHTING FILTER FOR USE IN A SPEECH CODER 未知

    公开(公告)号：CA2132006C

    公开(公告)日：1998-04-28

    申请号：CA2132006

    申请日：1994-01-18

    Applicant: MOTOROLA INC

    Inventor： JASIUK MARK A ,  GERSON IRA A ,  HARTMAN MATTHEW A

    IPC: G10L19/12 ,  H03H17/00 ,  H03H17/02 ,  H03M7/30 ,  H03M7/38 ,  H04B14/04 ,  G10L5/00

    Abstract: Analysis by synthesis calculates a difference by subtracting (130) synthesized s peech from input speech. The synthesized speech is formed by exciting long and short term filters (124,126) with excitation vectors from a codebook store (114) which is searched by codebook generation (120). A weighting filter (132) is applied to the difference signal a nd the weighted difference is used to calculate an energy measure (134) which is used to control the codebook search (140). The weighting filter is an Rth-order filter controlled with calculated coefficients. The method for calculating coefficients models the frequency respo nse of L Pth-order filters by a single Rth-order filter, where the order R ~ LxP. This method increases the control of a speech coder filter wi thout an increase in hardware complexity.

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