Title :
An adaptive tree search algorithm with application to multiresolution based perceptive audio coding
Author :
Prelcic, Nuria González ; Pena, Antonio S.
Author_Institution :
Dept. de Tecnoloxias das Comunicacions, Vigo Univ., Spain
Abstract :
Search algorithms for selecting signal decompositions based on the minimization of a cost functional have been proposed in the literature, in addition to several additive and non-additive information costs. We introduce a new cost function and a search algorithm built from a perceptual criterion. Their efficiency is demonstrated with results showing higher quality compressed audio signals than preliminary approaches at similar bit-rates
Keywords :
adaptive systems; audio coding; audio signals; data compression; minimisation; signal resolution; tree searching; adaptive tree search algorithm; additive information costs; bit rates; compressed audio signal quality; cost functional minimization; efficiency; multiresolution based perceptive audio coding; nonadditive information costs; signal decompositions; Audio coding; Auditory system; Bandwidth; Cost function; Distortion; Frequency; Minimization methods; Signal analysis; Signal resolution; Wavelet packets;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1996., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Paris
Print_ISBN :
0-7803-3512-0
DOI :
10.1109/TFSA.1996.546700
