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    Harmonic bandwidth extension of audio signals
    94.
    发明专利
    Harmonic bandwidth extension of audio signals 未知

    公开(公告)号：AU2015217340B2

    公开(公告)日：2018-05-31

    申请号：AU2015217340

    申请日：2015-02-10

    Applicant: QUALCOMM INC

    Inventor： SUBASINGHA SUBASINGHA SHAMINDA ,  KRISHNAN VENKATESH ,  ATTI VENKATRAMAN S ,  RAJENDRAN VIVEK

    IPC: G10L21/038

    Abstract: A method includes separating, at a device, an input audio signal into at least a low-band signal and a high-band signal. The low-band signal corresponds to a low-band frequency range and the high-band signal corresponds to a high-band frequency range. The method also includes selecting a non-linear processing function of a plurality of non-linear processing functions. The method further includes generating a first extended signal based on the low-band signal and the non-linear processing function. The method also includes generating at least one adjustment parameter based on the first extended signal, the high-band signal, or both.

    Conference audio management
    97.
    发明专利
    Conference audio management 未知

    公开(公告)号：AU2016244809A1

    公开(公告)日：2017-09-14

    申请号：AU2016244809

    申请日：2016-03-30

    Applicant: QUALCOMM INC

    Inventor： ATTI VENKATRAMAN S ,  SINDER DANIEL J ,  LEUNG NIKOLAI ,  RAJENDRAN VIVEK

    IPC: H04M3/56

    Abstract: A method for managing audio during a conference includes receiving, at a first buffer of a mobile device, a first audio stream from a first device associated with a first participant of the conference. The method also includes receiving, at a second buffer of the mobile device, a second audio stream from a second device associated with a second participant of the conference. The method further includes generating a control signal at a delay controller of the mobile device. The control signal is provided to the first buffer and to the second buffer to synchronize first buffered audio that is output from the first buffer with second buffered audio that is output from the second buffer.

    Encoder selection
    98.
    发明专利
    Encoder selection 未知

    公开(公告)号：AU2016244807A1

    公开(公告)日：2017-09-14

    申请号：AU2016244807

    申请日：2016-03-30

    Applicant: QUALCOMM INC

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

    IPC: G10L19/20 ,  G10L25/27

    Abstract: A device includes a first classifier and a second classifier coupled to the first classifier. The first classifier is configured to output first decision data that indicates a classification of an audio frame as a speech frame or a non-speech frame, the first decision data determined based on first probability data associated with a first likelihood of the audio frame being the speech frame and based on second probability data associated with a second likelihood of the audio frame being the non-speech frame. The second classifier is configured to output second decision data based on the first probability data, the second probability data, and the first decision data, the second decision data includes an indication of a selection of a particular encoder of multiple encoders available to encode the audio frame.

    Sistema, procedimientos, aparato y medios legibles por ordenador para la asignación de bits para la transmisión redundante de datos de audio
    100.
    发明专利
    Sistema, procedimientos, aparato y medios legibles por ordenador para la asignación de bits para la transmisión redundante de datos de audio 未知

    公开(公告)号：ES2621417T3

    公开(公告)日：2017-07-04

    申请号：ES12813673

    申请日：2012-12-20

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  KRISHNAN VENKATESH ,  SINDER DANIEL J

    IPC: G10L19/107 ,  G10L19/005 ,  G10L19/09 ,  H04L1/00 ,  H04L1/08

    Abstract: Un procedimiento (M100, M200, M300, M400) de procesamiento de una señal de audio, comprendiendo dicho procedimiento: el cálculo (T200, T210, T220, T250) de al menos un valor de una métrica de decisión para una segunda trama de la señal de audio que es posterior en la señal de audio a una primera trama de la señal de audio; y en base a dicho al menos un valor calculado de la métrica de decisión, la selección (T300, T350) de uno entre una pluralidad de candidatos de reasignación, en el que dicho al menos un valor calculado se basa en una medida de la capacidad de compresión de la segunda trama, y en el que dicho candidato de reasignación seleccionado indica una reasignación de una asignación inicial de bits para la segunda trama en una primera parte de bits que se utiliza para codificar la segunda trama y una segunda parte de bits que se utiliza para codificar una copia redundante de la primera trama.

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