DocumentCode :
3187567
Title :
Dynamic time warping with path control and non-local cost
Author :
Stettiner, Yoram ; Malah, David ; Chazan, Dan
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
fYear :
1994
fDate :
9-13 Oct 1994
Firstpage :
174
Abstract :
Dynamic time warping (DTW) is a dynamic programming technique widely used for solving time-alignment problems. The classical DTW constrains only the first derivative of the warping function, hence allowing no direct control over the warping function curvature. Moreover, it implicitly assumes-inappropriately for some applications-that the noise is white. We propose a multidimensional dynamic-programming technique which can efficiently solve time-warping optimization problems involving colored noise, and allows control over the warping function curvature. The technique is demonstrated for the co-channel speech separation problem. Applications employing DTW can benefit from the new technique, which offers improved accuracy and robustness in the presence of colored noise and competing speech
Keywords :
speech processing; co-channel speech separation problem; colored noise; competing speech; dynamic time warping; multidimensional dynamic-programming technique; nonlocal cost; path control; time-alignment problems; warping function curvature; Additive noise; Colored noise; Control systems; Cost function; Dynamic programming; Functional programming; Noise robustness; Speech enhancement; Telecommunication control; White noise;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Pattern Recognition, 1994. Vol. 3 - Conference C: Signal Processing, Proceedings of the 12th IAPR International Conference on
Conference_Location :
Jerusalem
Print_ISBN :
0-8186-6275-1
Type :
conf
DOI :
10.1109/ICPR.1994.577150
Filename :
577150
Link To Document :
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