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.

fYear

2006

fDate

Dec. 2006

Firstpage

253

Lastpage

256

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia, 2006. ISM'06. Eighth IEEE International Symposium on

Conference_Location

San Diego, CA

Print_ISBN

0-7695-2746-9

Type

conf

DOI

10.1109/ISM.2006.3

Filename

4061175