DECODING METHOD AND DEVICE
    1.
    发明申请
    DECODING METHOD AND DEVICE 有权
    解码方法和设备

    公开(公告)号:US20090204394A1

    公开(公告)日:2009-08-13

    申请号:US12427848

    申请日:2009-04-22

    IPC分类号: G10L21/00

    CPC分类号: G10L19/005

    摘要: A decoding method and device are provided. The spectrum parameter of a current bad data frame is determined. Specifically, a number of continuous bad frames that occur currently is determined. A spectrum parameter of a good data frame before the current bad data frame is determined. And a constant mean value of a spectrum parameter is determined. Then, the spectrum parameter of the good data frame is adaptively shifted towards the constant mean value of the spectrum parameter according to the number of the continuous bad data frames to calculate and obtain spectrum parameter information of the current bad frame. When the continuous bad data frames occur, the relevance between the spectrum parameter of the nearest good frame and the spectrum parameter of the current bad frame is gradually reduced, so that more accurate spectrum parameter of the current bad data frame can be obtained, thereby obtaining a better speech quality under a same code rate and a same frame error rate.

    摘要翻译: 提供了一种解码方法和装置。 确定当前不良数据帧的频谱参数。 具体地,确定当前发生的多个连续的坏帧。 确定当前不良数据帧之前的良好数据帧的频谱参数。 并确定频谱参数的恒定平均值。 然后,根据连续不良数据帧的数量,将良好数据帧的频谱参数自适应地偏移到频谱参数的常数平均值,以计算并获得当前坏帧的频谱参数信息。 当发生连续不良数据帧时,最近好帧的频谱参数与当前不良帧的频谱参数之间的相关性逐渐减小,从而可以获得当前不良数据帧的更准确的频谱参数,从而获得 在相同的码率和相同的帧错误率下,更好的语音质量。