利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

1 条记录 (耗时 0.022 秒)

    Pseudo-cepstral adaptive short-term post-filters for speech coders
    1.
    发明授权
    Pseudo-cepstral adaptive short-term post-filters for speech coders 失效
    用于语音编码器的伪倒频自适应短期后置滤波器

    公开(公告)号：US07269553B2

    公开(公告)日：2007-09-11

    申请号：US10684852

    申请日：2003-10-14

    申请人： Hong-Goo Kang ,  Kim Hong Kook

    发明人： Hong-Goo Kang ,  Kim Hong Kook

    IPC分类号： G10L19/04 ,  G10L21/00

    CPC分类号： G10L21/0208 ,  G10L19/04 ,  G10L21/0232

    摘要： Methods and systems for filtering synthesized or reconstructed speech are implemented. A filter based on a set of linear predictive coding (LPC) coefficients is constructed by transforming the LPC coefficients to the pseudo-cepstrum, a domain existing between LPC domain and the line spectral frequency (LSF) domain. The resulting filter can emphasize spectral frequencies associated with various formants, or spectral peaks, of an inverse transfer function relating to the LPC coefficients, and can de-emphasize spectral frequencies associated with various spectral minima, or spectral valleys, of the inverse transfer function relating to the LPC coefficients.

    摘要翻译： 实现滤波合成或重构语音的方法和系统。 通过将LPC系数变换到伪倒频谱（LPC域和线谱频率（LSF）域之间存在的域）来构造基于一组线性预测编码（LPC）系数的滤波器。 所得到的滤波器可以强调与与LPC系数相关的逆传递函数的各种共振峰或者谱峰相关的频谱频率，并且可以去除与相关的逆传递函数的各种频谱最小值或频谱谷相关联的频谱频率 到LPC系数。