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21 records (took 0.025 seconds)

    1.
    发明专利
    未知

    公开(公告)号：AT376239T

    公开(公告)日：2007-11-15

    申请号：AT01961541

    申请日：2001-08-29

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MINDE TOR ,  STEINARSON ARNE ,  UVLIDEN ANDERS

    IPC: G10L19/12

    Abstract: A multi-part fixed codebook includes both individual fixed codebooks for each channel and a shared fixed codebook. Although the shared fixed codebook is common to all channels, the channels are associated with individual lags. Furthermore, the individual fixed codebooks are associated with individual gains, and the individual lags are also associated with individual gains. The excitation from each individual fixed codebook is added to the corresponding excitation (a shared codebook vector, but individual lags and gains for each channel) from the shared fixed codebook.

    Multi-channel signal encoding and decoding
    2.
    发明专利
    Multi-channel signal encoding and decoding 未知

    公开(公告)号：AU2001282801B2

    公开(公告)日：2007-06-07

    申请号：AU2001282801

    申请日：2001-08-29

    Applicant: ERICSSON TELEFON AB L M

    Inventor： UVLIDEN ANDERS ,  MINDE TOR BJORN ,  STEINARSON ARNE

    IPC: G10L19/12

    Abstract: A multi-part fixed codebook includes both individual fixed codebooks for each channel and a shared fixed codebook. Although the shared fixed codebook is common to all channels, the channels are associated with individual lags. Furthermore, the individual fixed codebooks are associated with individual gains, and the individual lags are also associated with individual gains. The excitation from each individual fixed codebook is added to the corresponding excitation (a shared codebook vector, but individual lags and gains for each channel) from the shared fixed codebook.

    Handling variable delay in objective speech quality assessment
    3.
    发明专利
    Handling variable delay in objective speech quality assessment 未知

    公开(公告)号：AU1319801A

    公开(公告)日：2001-05-08

    申请号：AU1319801

    申请日：2000-10-24

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KARLSSON ANDERS ,  LUNDBERG JONAS ,  STEINARSON ARNE

    IPC: G10L19/00 ,  H04L1/24 ,  H04L1/20

    Abstract: A speech quality estimation technique that employs an arbitrary, speech quality estimation algorithm. The speech quality estimation technique analyzes a reference speech signal and a test speech signal, and based on this analysis, identifies the level of continuous delay variation, if any, and the location of and size of any intermittent delay variations along the test signal. The reference speech signal and/or the test speech signal are adjusted to account for continuous delay variation and intermittent delay variations, such that the reference speech signal and the test signal are similarly scaled with respect to the time domain. The reference speech signal and the test speech signal are then compared for the purpose of generating a speech quality estimation. The resulting speech quality estimation is then adjusted based on the level of continuous delay variation and any intermittent delay variations.

    5.
    发明专利
    未知

    公开(公告)号：SE0003284L

    公开(公告)日：2002-03-16

    申请号：SE0003284

    申请日：2000-09-15

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MINDE TOR BJOERN ,  STEINARSON ARNE ,  UVLIDEN ANDERS

    IPC: G10L19/12 ,  G10L19/00

    Abstract: A multi-part fixed codebook includes both individual fixed codebooks for each channel and a shared fixed codebook. Although the shared fixed codebook is common to all channels, the channels are associated with individual lags. Furthermore, the individual fixed codebooks are associated with individual gains, and the individual lags are also associated with individual gains. The excitation from each individual fixed codebook is added to the corresponding excitation (a shared codebook vector, but individual lags and gains for each channel) from the shared fixed codebook.

    6.
    发明专利
    未知

    公开(公告)号：SE0003284D0

    公开(公告)日：2000-09-15

    申请号：SE0003284

    申请日：2000-09-15

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MINDE TOR BJOERN ,  LUNDBERG TOMAS ,  STEINARSON ARNE ,  UVLIDEN ANDERS

    IPC: G10L19/12 ,  G10L

    Abstract: A multi-part fixed codebook includes both individual fixed codebooks for each channel and a shared fixed codebook. Although the shared fixed codebook is common to all channels, the channels are associated with individual lags. Furthermore, the individual fixed codebooks are associated with individual gains, and the individual lags are also associated with individual gains. The excitation from each individual fixed codebook is added to the corresponding excitation (a shared codebook vector, but individual lags and gains for each channel) from the shared fixed codebook.

    CODIFICACION DE SEÑALMULTI-CANAL.
    7.
    发明专利
    CODIFICACION DE SEÑALMULTI-CANAL. 未知

    公开(公告)号：ES2291340T3

    公开(公告)日：2008-03-01

    申请号：ES01961541

    申请日：2001-08-29

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MINDE TOR BJORN ,  STEINARSON ARNE ,  UVLIDEN ANDERS

    IPC: G10L19/12

    Abstract: Un codificador de señales de análisis por síntesis predictivo lineal multicanal que incluye un libro de código fijo multiparte, incluyendo un libro de código fijo individual (FC1, FC2) para cada canal; un libro de código fijo compartido (FCS) que contiene los vectores de libro de código que son comunes a todos los canales; y medios (40) para analizar la correlación entre canales y cambiar dinámicamente, dependiendo de la correlación entre canales actual, la asignación de bits de codificación entre dicho dichos libros de códigos fijos individuales y dicho libro de código fijo compartido.

    9.
    发明专利
    未知

    公开(公告)号：DE60026058D1

    公开(公告)日：2006-04-20

    申请号：DE60026058

    申请日：2000-10-24

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KARLSSON ANDERS ,  LUNDBERG JONAS ,  STEINARSON ARNE

    IPC: G10L19/00 ,  H04L1/20 ,  H04L1/24

    Abstract: A speech quality estimation technique that employs an arbitrary, speech quality estimation algorithm. The speech quality estimation technique analyzes a reference speech signal and a test speech signal, and based on this analysis, identifies the level of continuous delay variation, if any, and the location of and size of any intermittent delay variations along the test signal. The reference speech signal and/or the test speech signal are adjusted to account for continuous delay variation and intermittent delay variations, such that the reference speech signal and the test signal are similarly scaled with respect to the time domain. The reference speech signal and the test speech signal are then compared for the purpose of generating a speech quality estimation. The resulting speech quality estimation is then adjusted based on the level of continuous delay variation and any intermittent delay variations.

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