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    SPEECH CODING WITH COMFORT NOISE VARIABILITY FEATURE FOR INCREASED FIDELITY
    1.
    发明申请
    SPEECH CODING WITH COMFORT NOISE VARIABILITY FEATURE FOR INCREASED FIDELITY 审中-公开
    语音编码与舒适的噪声可变性特征增加的风险

    公开(公告)号：WO0031719A3

    公开(公告)日：2003-03-20

    申请号：PCT/SE9902023

    申请日：1999-11-08

    Applicant: ERICSSON TELEFON AB L M

    Inventor： EKUDDEN ERIK ,  HAGEN ROAR ,  JOHANSSON INGEMAR

    IPC: G10L19/00 ,  H04B14/04 ,  H04M1/00 ,  H04M1/725

    CPC classification number: G10L19/012

    Abstract: The quality of comfort noise generated by a speech decoder (93) during non-speech periods is improved by modifying (30, 75) comfort noise parameter values (33) normally used to generate the comfort noise. The comfort noise parameter values are modified in response to variability information (43) associated with a background noise parameter. The modified comfort noise parameter values (35) are then used to generate the comfort noise.

    Abstract translation: 通过修改（30,75）通常用于产生舒适噪声的舒适噪声参数值（33）来提高在非语音周期期间由语音解码器（93）产生的舒适噪声的质量。 响应于与背景噪声参数相关联的可变性信息（43）来修改舒适噪声参数值。 改进的舒适噪声参数值（35）然后用于产生舒适噪声。

    LINEAR PREDICTIVE ANALYSIS-BY-SYNTHESIS ENCODING METHOD AND ENCODER
    2.
    发明申请
    LINEAR PREDICTIVE ANALYSIS-BY-SYNTHESIS ENCODING METHOD AND ENCODER 审中-公开
    线性预测分析综合编码方法和编码器

    公开(公告)号：WO0016315A3

    公开(公告)日：2000-05-25

    申请号：PCT/SE9901433

    申请日：1999-08-24

    Applicant: ERICSSON TELEFON AB L M

    Inventor： EKUDDEN ERIK ,  HAGEN ROAR

    IPC: H03M7/30 ,  G10L19/083 ,  H03M7/36 ,  G10L19/12

    CPC classification number: G10L19/083

    Abstract: A linear predictive analysis-by-synthesis encoder includes a search algorithm block (50) and a vector quantizer (58) for vector quantizing optimal gains from a plurality of subframes in a frame. The internal encoder states are updated using (50, 52, 54, 56) the vector quantized gains.

    Abstract translation: 合成线性预测分析编码器包括用于向量量化来自帧中多个子帧的最优增益的搜索算法块（50）和矢量量化器（58）。 使用（50,52,54,56）矢量量化增益来更新内部编码器状态。

    4.
    发明专利
    未知

    公开(公告)号：DE69922388T2

    公开(公告)日：2005-12-22

    申请号：DE69922388

    申请日：1999-08-24

    Applicant: ERICSSON TELEFON AB L M

    Inventor： EKUDDEN ERIK ,  HAGEN ROAR

    IPC: H03M7/30 ,  G10L19/083 ,  H03M7/36 ,  G10L19/14

    Abstract: A linear predictive analysis-by-synthesis encoder includes a search algorithm block (50) and a vector quantizer (58) for vector quantizing optimal gains from a plurality of subframes in a frame. The internal encoder states are updated (50, 52, 54, 56) using the vector quantized gains.

    5.
    发明专利
    未知

    公开(公告)号：DE69917677T2

    公开(公告)日：2005-06-02

    申请号：DE69917677

    申请日：1999-11-08

    Applicant: ERICSSON TELEFON AB L M

    Inventor： EKUDDEN ERIK ,  HAGEN ROAR ,  JOHANSSON INGEMAR

    IPC: G10L19/012 ,  G10L19/00 ,  G10L19/04 ,  H04B14/04 ,  H04M1/00 ,  H04M1/725

    Abstract: The quality of comfort noise generated by a speech decoder during non-speech periods is improved by modifying comfort noise parameter values normally used to generate the comfort noise. The comfort noise parameter values are modified in response to variability information associated with a background noise parameter. The modified comfort noise parameter values are then used to generate the comfort noise.

    AN ADAPTIVE CRITERION FOR SPEECH CODING
    10.
    发明专利
    AN ADAPTIVE CRITERION FOR SPEECH CODING 未知

    公开(公告)号：MY123316A

    公开(公告)日：2006-05-31

    申请号：MYPI9903552

    申请日：1999-08-19

    Applicant: ERICSSON TELEFON AB L M

    Inventor： EKUDDEN ERIK ,  HAGEN ROAR

    IPC: G01L19/14 ,  G10L19/00 ,  G10L19/08 ,  G10L19/14 ,  G10L25/93 ,  H03M7/30 ,  H03M7/36

    Abstract: IN PRODUCING FROM AN ORIGINAL SPEECH SIGNAL A PLURALITY OF PARAMETERS FROM WHICH AN APPROXIMATION OF THE ORIGINAL SPEECH SIGNAL CAN BE RECONSTRUCTED, A FURTHER SIGNAL IS GENERATED IN RESPONSE TO THE ORIGINAL SPEECH SIGNAL, WHICH FURTHER SIGNAL IS INTENDED TO REPRESENT THE ORIGINALSPEECH SIGNAL. AT LEAST ONE OF THE PARAMETERS (DWE) IS DETERMINED USING FIRST AND SECOND DIFFERENCES BETWEEN THE ORIGINAL SPEECH SIGNAL AND THE FURTHER SIGNAL. THE FIRST DIFFERENCE (DW) IS A DIFFERENCE BETWEEN A WAVEFORM ASSOCIATED WITH THE ORIGINAL SPEECH SIGNAL AND A WAVEFORM ASSOCIATED WITH THE FURTHER SIGNAL, AND THE SECOND DIFFERENCE (DE) IS A DIFFERENCE BETWEEN AN ENERGY PARAMETER DERIVED FROM THE ORIGINAL SPEECH SIGNAL AND A CORRESPONDING ENERGY PARAMETER ASSOCIATED WITH THE FURTHER SIGNAL.FIGURE 5

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