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Title: A new method for epoch detection based on the Cohen's class of time frequency representations
Authors: Navarro-Mesa, Juan L. 
Lleida-Solano, E.
Moreno-Bilbao, A.
UNESCO Clasification: 3307 Tecnología electrónica
Keywords: Epoch detection
Speech analisys
Time-frequency representations
Issue Date: 2001
Publisher: 1070-9908
Journal: IEEE Signal Processing Letters 
Abstract: This paper presents a new method for detecting the instants of glottal closure (IGC), or epochs, in noisy environments based on the Cohen's class time-frequency representations (TFR), We define a detection function inspired in a time-frequency formulation for optimum detection and apply a morphologic closing over it to determine the epochs. It compares favorably with other methods (e.g., the SIFT-based and the Frobenius Norm [FN] function) in different levels of Gaussian noise. Experiments are carried over a data base compossed of ten speakers.
ISSN: 1070-9908
DOI: 10.1109/97.935737
Source: IEEE Signal Processing Letters[ISSN 1070-9908],v. 8, p. 225-227
Appears in Collections:Artículos
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