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    SYSTEMS AND METHODS OF COMMUNICATING REDUNDANT FRAME INFORMATION
    114.
    发明专利
    SYSTEMS AND METHODS OF COMMUNICATING REDUNDANT FRAME INFORMATION 未知

    公开(公告)号：CA2925582A1

    公开(公告)日：2015-04-16

    申请号：CA2925582

    申请日：2014-10-09

    Applicant: QUALCOMM INC

    Inventor： ATTI VENKATRAMAN S ,  RAJENDRAN VIVEK ,  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.

    116.
    发明专利
    未知

    公开(公告)号：BRPI0720873A2

    公开(公告)日：2014-03-04

    申请号：BRPI0720873

    申请日：2007-12-27

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  KANDHADAI ANANTHAPADMANABHAN A

    IPC: G10L19/02 ,  G10L19/04 ,  H04J3/16

    Abstract: A method for dimming a first packet associated with a first bit rate to a second packet associated with a second bit rate is described. A first packet is received. The first packet is analyzed to determine a first bit rate associated with the first packet. Bits associated with at least one parameter are discarded from the first packet. Remaining bits associated with one or more parameters and a special identifier are packed into a second packet associated with a second bit rate. The second packet is transmitted.

    117.
    发明专利
    未知

    公开(公告)号：BRPI0719728A2

    公开(公告)日：2014-03-04

    申请号：BRPI0719728

    申请日：2007-11-30

    Applicant: QUALCOMM INC

    Inventor： KANDHADAL ANANTHAPADMANABHAN A ,  RAJENDRAN VIVEK

    IPC: G10L21/02 ,  G06F7/38 ,  G06F17/10

    Abstract: A dynamic normalization factor for a current frame of a signal is determined to reduce loss in precision for low-level signals. The normalization factor depends on an amplitude of the current frame of the signal. The normalization factor also depends on values of filter states after one or more operations were performed on a previous frame of a normalized signal and on the normalization factor for the previous frame. The current frame of the signal is normalized based on the normalization factor that is determined. The states' normalization factor may be adjusted based on the normalization factor that is determined.

    SYSTEMS AND METHODS FOR INCLUDING AN IDENTIFIER WITH A PACKET ASSOCIATED WITH A SPEECH SIGNAL
    118.
    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：CA2657424C

    公开(公告)日：2013-05-28

    申请号：CA2657424

    申请日：2007-07-31

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  KANDHADAI ANANTHAPADMANABHAN A

    IPC: H04L47/43 ,  G10L19/08 ,  H04W28/06

    Abstract: A method for including an identifier with a packet associated with a speech 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 determination is made if the packet is encoded as a wideband packet or a narrowband packet. An identifier is packed in the packet based on the determination. 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 used 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 illegal values provided from the N-bit parameter.

    119.
    发明专利
    未知

    公开(公告)号：BRPI0714825A2

    公开(公告)日：2013-05-21

    申请号：BRPI0714825

    申请日：2007-07-31

    Applicant: QUALCOMM INC

    Inventor： RAJENDRAN VIVEK ,  KANDHADAI ANANTHAPADMANABHAN A

    IPC: G10L19/00 ,  H04L47/43

    Abstract: A method for including an identifier with a packet associated with a speech 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 determination is made if the packet is encoded as a wideband packet or a narrowband packet. An identifier is packed in the packet based on the determination. 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 used 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 illegal values provided from the N-bit parameter.

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