On second-order statistics of log-periodogram with correlated components

被引：7
|
作者：
Ephraim, Y [1 ]
Roberts, WJJ
机构：
[1] George Mason Univ, Dept Elect & Comp Engn, Fairfax, VA 22030 USA
[2] Atlantic Coast Technol Inc, Silver Spring, MD 20904 USA
来源：
IEEE SIGNAL PROCESSING LETTERS | 2005年 / 12卷 / 09期
关键词：
log-periodogram; speech recognition;
D O I：
10.1109/LSP.2005.853049
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We derive an explicit expression for the covariance of the log-periodogram power spectral density estimator for a zero mean Gaussian process. We do not make the assumption that the spectral components of the process are uncorrelated. Applications to spectral estimation and to cepstral modeling in automatic speech recognition are discussed.
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页码：625 / 628
页数：4
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