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Convention Paper

Harmonic Structure Reconstruction in Audio Compression Method Based on Spectral Oriented Trees

Authors: Chang, Wei-Chen; Su, Alvin W.; Wang, Jing-Xin

AES Convention 120 · Paper 6809 · May 2006

Abstract

A novel audio compression method called Harmonic Structure Quad Tree is presented. The method employs a bit-plane based quantization-encoding method called Concurrent Encoding in Hierarchical Tree to encode MDCT coefficients of the overlapping audio frames. Scalability is easily achieved by discarding the tailing bits at any position of the bit-stream as long as head information is preserved. An embedded harmonic structure reconstruction method is proposed to predict and restore the coefficients missed during the encoding process. The proposed method is compared favorably to the popular MP3 coder in both pop and classic audio programs. No psychoacoustic model is used. The computation complexity and the coding table size are much smaller compared to those of MP3 coder.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6809
Publication date
May 6, 2006
Session subject
Low Bit-Rate Audio Coding
Affiliation
SCREAM Lab., National Cheng-Kung Univ. (See document for exact affiliation information.)
Type
Convention Paper