中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

143 records (took 0.028 seconds)

    22.
    发明专利
    未知

    公开(公告)号：DE69935233D1

    公开(公告)日：2007-04-05

    申请号：DE69935233

    申请日：1999-09-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： JOHANSSON INGEMAR ,  SVEDBERG JONAS ,  UVLIDEN ANDERS

    IPC: G10L19/00 ,  G10L19/12 ,  G10L19/08 ,  G10L19/14 ,  H03M7/36

    Abstract: In producing an approximation of an original speech signal from encoded information about the original speech signal, current parameters (EnPar(i)) associated with a current segment of the original speech signal are determined from the encoded information. Reproduction of a noise component of the original speech signal is improved by using at least one of the current parameters and corresponding previous parameters respectively associated with previous segments of the original speech signal (31, 37, 39) to produce a modified parameter (EnPar(i) mod ). The modified parameter is then used (25, 40) to produce an approximation of the current segment of the original speech signal.

    23.
    发明专利
    未知

    公开(公告)号：DE69929069T2

    公开(公告)日：2006-07-20

    申请号：DE69929069

    申请日：1999-08-24

    Applicant: ERICSSON TELEFON AB L M

    Inventor： UVLIDEN ANDERS ,  SVEDBERG JONAS

    IPC: G10L19/22 ,  H03M7/30 ,  H03M7/36

    Abstract: A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector ( 22 ) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.

    SPEECH CODING WITH BACKGROUND NOISE REPRODUCTION
    27.
    发明专利
    SPEECH CODING WITH BACKGROUND NOISE REPRODUCTION 未知

    公开(公告)号：CA2340160A1

    公开(公告)日：2000-03-23

    申请号：CA2340160

    申请日：1999-09-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： JOHANSSON INGEMAR ,  SVEDBERG JONAS ,  UVLIDEN ANDERS

    IPC: G10L19/12 ,  G10L19/08 ,  H03M7/36 ,  G10L19/00 ,  G10L19/14

    Abstract: In producing an approximation of an original speech signal from encoded information about the original speech signal, current parameters (EnPar(i)) associated with a current segment of the original speech signal are determin ed from the encoded information. Reproduction of a noise component of the original speech signal is improved by using at least one of the current parameters and corresponding previous parameters respectively associated wit h previous segments of the original speech signal (31, 37, 39) to produce a modified parameter (EnPar(i)mod). The modified parameter is then used (25, 4 0) to produce an approximation of the current segment of the original speech signal.

    28.
    发明专利
    未知

    公开(公告)号：SE9803164D0

    公开(公告)日：1998-09-16

    申请号：SE9803164

    申请日：1998-09-16

    Applicant: ERICSSON TELEFON AB L M

    Inventor： UVLIDEN ANDERS ,  SVEDBERG JONAS

    IPC: G10L19/22 ,  H03M7/30 ,  H03M7/36 ,  G10L

    Abstract: A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector ( 22 ) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.

    ADAPTIVE ENCODING OF TRANSIENT AUDIO SIGNALS
    29.
    发明专利
    ADAPTIVE ENCODING OF TRANSIENT AUDIO SIGNALS 未知

    公开(公告)号：AU2023385242A1

    公开(公告)日：2025-05-01

    申请号：AU2023385242

    申请日：2023-11-22

    Applicant: ERICSSON TELEFON AB L M

    Inventor： KINUTHIA CHARLES ,  SVEDBERG JONAS ,  JANSSON TOFTGÅRD TOMAS

    IPC: G10L19/20 ,  G10L19/02 ,  G10L19/025 ,  G10L19/04 ,  G10L19/22 ,  G10L25/81

    Abstract: A method and an encoder to adjust a coding scheme selection when detecting a transient in an input sound signal. The encoder encodes the input signal in frames using a frequency-domain, FD, coding scheme or time-domain, TD, coding scheme. The method comprises detecting one or more of a transient attack and a transient release in the input signal and a location of the one or more of the transient attack and the transient release in at least one of a current frame and a previous frame. Based on a plurality of conditions associated with the one or more of the transient attack and the transient release it is determined whether or not to force a TD coding scheme, and selecting the TD coding scheme responsive to determining that the TD coding scheme is forced to be used.

Patent Agency Ranking