DocumentCode :
1089947
Title :
A pitch extraction algorithm based on LPC inverse filtering and AMDF
Author :
Un, Chong Kwan ; Yang, Shih-chien
Volume :
25
Issue :
6
fYear :
1977
fDate :
12/1/1977 12:00:00 AM
Firstpage :
565
Lastpage :
572
Abstract :
We present an efficient algorithm for determining fundamental frequency and voiced/unvoiced (V/UV) decision of speech. The pitch extractor utilizes the cross-correlation average magnitude difference function (AMDF) waveform that is obtained from the linear prediction residual signal. The decision logic used in pitch extraction is simple and reliable. The periodicity and null depth of AMDF waveforms, together with the average residual energy and the past pitch information, are used in the decision logic for fundamental frequency and V/UV decision. Computer simulation of the algorithm yielded accurate results, even for difficult phonemes for pitch extraction.
Keywords :
Autocorrelation; Computer simulation; Data mining; Filtering algorithms; Frequency; Linear predictive coding; Logic; Signal processing algorithms; Speech processing; Vocoders;
fLanguage :
English
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
0096-3518
Type :
jour
DOI :
10.1109/TASSP.1977.1163005
Filename :
1163005
Link To Document :
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