| 摘要 |
PROBLEM TO BE SOLVED: To obtain sufficient sturdiness with respect to noise or the like in a real environment. SOLUTION: Sturdiness in the real environment is obtained by filter processing audio signals, so as to divide the signals into a plurality of bands, estimating the fundamental period of each band, separating the signals into periodical components and non-periodical components, extracting periodical component power, normalizing the extracted periodical component power using the method such as histogram, so as to obtain entropy, and the entropy is used as a featured parameter of the audio signals for pattern identification and audio interval detection or the like to obtain sturdiness in the real environment. COPYRIGHT: (C)2006,JPO&NCIPI
|
