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    HARMONIC BANDWIDTH EXTENSION OF AUDIO SIGNALS
    41.
    发明专利
    HARMONIC BANDWIDTH EXTENSION OF AUDIO SIGNALS 未知

    公开(公告)号：CA2936987C

    公开(公告)日：2019-05-21

    申请号：CA2936987

    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.

    Signal re-use during bandwidth transition period
    45.
    发明专利
    Signal re-use during bandwidth transition period 未知

    公开(公告)号：AU2016307721A1

    公开(公告)日：2018-02-01

    申请号：AU2016307721

    申请日：2016-06-24

    Applicant: QUALCOMM INC

    Inventor： SUBASINGHA SUBASINGHA SHAMINDA ,  ATTI VENKATRAMAN ,  RAJENDRAN VIVEK

    IPC: G10L19/005 ,  G10L19/24 ,  G10L21/038

    Abstract: A method includes determining an error condition during a bandwidth transition period of an encoded audio signal. The error condition corresponds to a second frame of the encoded audio signal, where the second frame sequentially follows a first frame in the encoded audio signal. The method also includes generating audio data corresponding to a first frequency band of the second frame based on audio data corresponding to the first frequency band of the first frame. The method further includes re-using a signal corresponding to a second frequency band of the first frame to synthesize audio data corresponding to the second frequency band of the second frame.

    SYSTEM AND METHOD OF REDUNDANCY BASED PACKET TRANSMISSION ERROR RECOVERY
    47.
    发明专利
    SYSTEM AND METHOD OF REDUNDANCY BASED PACKET TRANSMISSION ERROR RECOVERY 未知

    公开(公告)号：CA2953604A1

    公开(公告)日：2016-02-04

    申请号：CA2953604

    申请日：2015-07-27

    Applicant: QUALCOMM INC

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

    IPC: H04L1/18 ,  H04L1/00

    Abstract: A device includes a receiver, a buffer, a transmitter, and an analyzer. The receiver is configured to receive a plurality of packets that corresponds to at least a subset of a sequence of packets. Error correction data of a first packet of the plurality of packets includes a partial copy of a second packet of the plurality of packets. The analyzer is configured to determine whether a particular packet of the sequence is missing from the buffer, and to determine whether a partial copy of the particular packet is stored in the buffer. The analyzer is also configured to send, via the transmitter, a retransmit message to a second device based at least in part on determining that the buffer does not store the particular packet and that the buffer does not store the partial copy of the particular packet.

    HARMONIC BANDWIDTH EXTENSION OF AUDIO SIGNALS
    50.
    发明专利
    HARMONIC BANDWIDTH EXTENSION OF AUDIO SIGNALS 未知

    公开(公告)号：MY180821A

    公开(公告)日：2020-12-09

    申请号：MYPI2016702572

    申请日：2015-02-10

    Applicant: QUALCOMM INC

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

    Abstract: A method includes separating, at a device, an input audio signal ( 102) into at least a low-band signal (122) and a high-band signal (124). 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 ( 182, 282) based on the low-band signal and the non-linear processing function. The method also includes generating at least one adjustment parameter (178) based on the first extended signal, the high-band signal, or both.

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