Title :
A Fractal and Wavelet-Based Approach for Audio Coding.
Author :
Guido, Rodrigo Capobianco ; Vieira, Lucimar Sasso ; Junior, Sylvio Barbon ; Sanchez, Fabrício Lopes ; Guilherme, Marcio Borges Alonso ; Sérgio, Kim Inocêncio César ; Scarpa, Thais Lorasqui ; Fonseca, Everthon Silva ; Pereira, Jose Carlos ; Monteiro, Mauíi
Author_Institution :
Dept. of Phys. & Informatics, Sao Paulo Univ.
Abstract :
Towards an optimization-oriented approach for audio coding, this paper presents improved rate-distortion and perceptual strategies for bit allocation. The algorithm is based on best basis wavelet-packet trees and fractal dimension calculation. Transparent coding of high quality audio, signals sampled at 44.1 KHz using 16 bits PCM, is effectively achieved at low bit rates. Real time working of the decoder is confirmed, reassuring the usability of the proposed technique
Keywords :
audio coding; decoding; fractals; rate distortion theory; signal sampling; trees (mathematics); wavelet transforms; 44.1 KHz; PCM; audio coding; bit allocation; decoder; fractal dimension calculation; optimization-oriented approach; perceptual strategy; rate-distortion theory; signal sampling; wavelet-packet trees; Audio coding; Bit rate; Decoding; Entropy; Filters; Fractals; Physics; Rate-distortion; Switches; Wavelet packets;
Conference_Titel :
Multimedia, 2006. ISM'06. Eighth IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7695-2746-9
