Title :
Mandarin four-tone recognition with the fuzzy C-means algorithm
Author :
Li, Jingjiao ; Xia, Xiaodong ; Gu, Shusheng
Author_Institution :
Technol. Center, HiSense Group, Qingdao, China
Abstract :
The pitch period detector based on the discrete wavelet transform (DWT) is described. Making use of the speech signal DWT at scale 2/sup 4/,2/sub 5/, the pitch period can be estimated. The parameter {a/sub 1/,a/sub 2/} of four-tone recognition is obtained by the fundamental frequency curve fitting. The fuzzy C-means algorithm is applied to four-tone recognition. The four-tone clustering centers are obtained. The tone value can be determined by the maximum memberships.
Keywords :
discrete wavelet transforms; fuzzy set theory; speech recognition; Chinese speech; DWT; Mandarin four-tone recognition; discrete wavelet transform; fundamental frequency curve fitting; fuzzy C-means algorithm; pitch period detector; speech signal; Clustering algorithms; Convolution; Detectors; Discrete wavelet transforms; Frequency; Human voice; Natural languages; Smoothing methods; Speech analysis; Wavelet analysis;
Conference_Titel :
Fuzzy Systems Conference Proceedings, 1999. FUZZ-IEEE '99. 1999 IEEE International
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5406-0
DOI :
10.1109/FUZZY.1999.793100
