公开(公告)号：US20110058685A1

公开(公告)日：2011-03-10

申请号：US12920299

申请日：2008-08-27

申请人： Shigeki Sagayama ,  Nobutaka Ono ,  Hirokazu Kameoka ,  Kenichi Miyamoto ,  Jonathan Le Roux

发明人： Shigeki Sagayama ,  Nobutaka Ono ,  Hirokazu Kameoka ,  Kenichi Miyamoto ,  Jonathan Le Roux

IPC分类号： H03G5/00

CPC分类号： G10L21/0272

摘要： The present invention obtains a separated signal from an audio signal based on the anisotropy of smoothness of spectral elements in the time-frequency domain. A spectrogram of the audio signal is assumed to be a sum of a plurality of sub-spectrograms, and smoothness of spectral elements of each sub-spectrogram in the time-frequency domain has directionality on the time-frequency plane. The method comprises obtaining a distribution coefficient for distributing spectral elements of said audio signal in the time-frequency domain to at least one sub-spectrogram based on the directionality of the smoothness of each sub-spectrogram on the time-frequency plane, and separating at least one sub-spectrogram from said spectral elements of said audio signal using said distribution coefficient.

摘要翻译： 本发明基于时频域中的频谱元素的平滑度的各向异性从音频信号中获得分离的信号。 假设音频信号的频谱是多个子频谱图的和，并且时频域中的每个子频谱图的频谱元素的平滑度在时间 - 频率平面上具有方向性。 该方法包括：基于时频平面上的每个子频谱图的平滑度的方向性，获得用于将时频域中的所述音频信号的频谱元素分配到至少一个子频谱图的分布系数，并且在 使用所述分布系数，从所述音频信号的所述频谱元素的至少一个子频谱图。