发明名称 |
MODEL-BASED DISTORTION COMPENSATING NOISE REDUCTION APPARATUS AND METHOD FOR SPEECH RECOGNITION |
摘要 |
A model-based distortion compensating noise reduction apparatus for speech recognition, includes: a speech absence probability calculator for calculating the probability distribution for absence and existence of a speech using the sound absence and existence information for the frames; a noise estimation updater for estimating a more accurate noise component by updating the variance of the clean speech and noise for each frame; and a speech absence probability-based noise filter for outputting a first clean speech through the speech absence probability transmitted from the speech absence probability calculator and a first noise filter. Further, the model-based distortion compensating noise reduction apparatus includes a post probability calculator for calculating post probabilities for mixtures using a GMM containing a clean speech in the first clean speech; and a final filter designer for forming a second noise filter and outputting an improved final clean speech signal using the second noise filter.
|
申请公布号 |
US2011077939(A1) |
申请公布日期 |
2011.03.31 |
申请号 |
US20090626548 |
申请日期 |
2009.11.25 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
JUNG HO YOUNG;KANG BYUNG OK |
分类号 |
G10L21/02 |
主分类号 |
G10L21/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|