Title :
A flexible tiling of the time axis for adaptive wavelet packet decompositions
Author :
Pena, Antonio S. ; Prelcic, Nuria González ; Serantes, Carlos
Author_Institution :
ETSE Telecomunicacion, Vigo Univ., Spain
Abstract :
A segmentation procedure of time sequences based on a time-frequency analysis is presented. The use of both a wavelet packet transform and the original time signal provides a set of spectral and time parameters that allows the algorithm to locate some proper break points to split the input frame into a discrete number of smaller segments. Some examples showing the performance of the method are also presented. An application to wavelet-based audio coding is also discussed
Keywords :
adaptive signal processing; audio coding; band-pass filters; filtering theory; parameter estimation; sequences; spectral analysis; time-frequency analysis; time-varying filters; wavelet transforms; adaptive wavelet packet decompositions; algorithm; break points; flexible tiling; input frame; performance; spectral parameters; split and merge process; time axis; time parameters; time sequences segmentation; time signal; time-frequency analysis; time-varying orthogonal filter banks; wavelet based audio coding; wavelet packet transform; Audio coding; Discrete wavelet transforms; Filters; Frequency; Performance analysis; Signal analysis; Speech analysis; Wavelet analysis; Wavelet packets; Wavelet transforms;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.599467
