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    SYSTEMS AND METHODS FOR INCLUDING AN IDENTIFIER WITH A PACKET ASSOCIATED WITH A SPEECH SIGNAL
    122.
    发明专利
    SYSTEMS AND METHODS FOR INCLUDING AN IDENTIFIER WITH A PACKET ASSOCIATED WITH A SPEECH SIGNAL 未知

    公开(公告)号：CA2657424A1

    公开(公告)日：2008-02-07

    申请号：CA2657424

    申请日：2007-07-31

    Applicant: QUALCOMM INC

    Inventor： KANDHADAI ANANTHAPADMANABHAN A ,  RAJENDRAN VIVEK

    IPC: G10L19/00 ,  H04L47/43

    Abstract: A method for including an identifier with a packet associated with a spee ch signal is described. A signal is received. The signal is partitioned into a plurality of frames. A frame of the signal is encoded into a packet. A de termination is made if the packet is encoded as a wideband packet or a narro wband packet. An identifier is packed in the packet based on the determinati on. The packet is transmitted. At least two illegal values are provided from an N-bit parameter, wherein at least one bit from the N-bit parameter is us ed to carry information. A number of bits from the N-bit parameter that are used to carry information is equal to log2(X), wherein X is the number of il legal values provided from the N-bit parameter.

    SYSTEMS, METHODS, AND APPARATUS FOR SIGNAL CHANGE DETECTION
    123.
    发明专利
    SYSTEMS, METHODS, AND APPARATUS FOR SIGNAL CHANGE DETECTION 未知

    公开(公告)号：CA2657420A1

    公开(公告)日：2008-02-07

    申请号：CA2657420

    申请日：2007-07-31

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  KANDHADAI ANANTHAPADMANABHAN A

    IPC: G10L11/02 ,  G10L19/00 ,  G10L25/93

    Abstract: Disclosed configurations include systems, methods, and apparatus arranged to generate a sequence of spectral tilt values that is based on inactive fr ames of a speech signal. For each of a plurality of inactive frames of the s peech signal, a transmit decision is made according to a change calculated a mong at least two corresponding values of the sequence. The outcome of the t ransmit decision determines whether a silence description is transmitted for the corresponding inactive frame.

    Systems and methods of communicating redundant frame information
    124.
    发明专利
    Systems and methods of communicating redundant frame information 未知

    公开(公告)号：NZ717780A

    公开(公告)日：2021-05-28

    申请号：NZ71778014

    申请日：2014-10-09

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  ATTI VENKATRAMAN S ,  KRISHNAN VENKATESH

    IPC: H04L1/00 ,  H04L1/08

    Abstract: A method includes receiving a second audio frame at a decoder. The second audio frame follows a first audio frame in an audio signal and includes a first number of bits allocated to primary coding information associated with the second audio frame, a second number of bits allocated to redundant coding information associated with the first audio frame, and an indicator of a frame type of the first audio frame. In response to a frame erasure condition associated with the first audio frame, the second number of bits is determined based on the indicator and used to decode the first audio frame. In clean channel conditions, the first audio frame is received and decoded based on primary coding bits in the first audio frame, and the first number of bits is determined based on the indicator and used to decode the second audio frame.

    Sistemas, procedimientos, aparatos y medios legibles por ordenador para inyección de ruido
    125.
    发明专利
    Sistemas, procedimientos, aparatos y medios legibles por ordenador para inyección de ruido 未知

    公开(公告)号：ES2808302T3

    公开(公告)日：2021-02-26

    申请号：ES11750025

    申请日：2011-08-17

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  DUNI ETHAN ROBERT ,  KRISHNAN VENKATESH

    IPC: G10L19/028

    Abstract: Un procedimiento (M100) de procesamiento de una señal de audio, comprendiendo dicho procedimiento (M100): en base a información de la señal de audio, seleccionar (T100) una de una pluralidad de entradas de un libro de códigos; determinar (T200) ubicaciones, en un dominio de frecuencia, de elementos de valor cero de una primera señal que está basada en la entrada de libro de códigos seleccionada; calcular (T300) una energía de la señal de audio en las ubicaciones de dominio de frecuencia determinadas; calcular (T400) un valor de una medida de una distribución de la energía de la señal de audio entre las ubicaciones de dominio de frecuencia determinadas, en el que dicho valor calculado está basado en una relación entre (A) una energía total de un subconjunto adecuado de los elementos de la señal de audio en dichas ubicaciones de dominio de frecuencia determinadas y (B) una energía total de los elementos de la señal de audio en dichas ubicaciones de dominio de frecuencia determinadas; y en base a dicha energía calculada y dicho valor calculado, calcular (T500) un factor de ganancia de inyección de ruido.

    Audio bandwidth selection
    130.
    发明专利
    Audio bandwidth selection 未知

    公开(公告)号：AU2016244808B2

    公开(公告)日：2019-08-22

    申请号：AU2016244808

    申请日：2016-03-30

    Applicant: QUALCOMM INC

    Inventor： ATTI VENKATRAMAN S ,  CHEBIYYAM VENKATA SUBRAHMANYAM CHANDRA SEKHAR ,  RAJENDRAN VIVEK

    IPC: G10L19/26

    Abstract: A device includes a receiver configured to receive an audio frame of an audio stream. The device also includes a decoder configured to generate first decoded speech associated with the audio frame and to determine a count of audio frames classified as being associated with band limited content. The decoder is further configured to output second decoded speech based on the first decoded speech. The second decoded speech may be generated according to an output mode of the decoder. The output mode may be selected based at least in part on the count of audio frames.

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