Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Combined Source and Perceptual Audio Coding

Authors: Ferreira, Anibal J. S.; Rocha, Andre C.

AES Convention 115 · Paper 5982 · October 2003

Abstract

An advanced Audio Spectral Coder (ASC) is described that implements a new approach to the problem of efficient audio compression by combining source coding with perceptual coding techniques. This approach involves the audio segmentation into three main components: transient events in the time domain, harmonic structures of sinusoids and stationary noise in the MDCT frequency domain. It is shown that this segmentation permits the independent parametrization and coding of components according to appropriate representation models and applicable psychoacoustic rules. The coding performance of ASC is characterized and it is shown that due to its underlying structure, addiitional functionalities other than compression are also possible namely bitstream semantic scalability, access and classification.

Details

Published in
AES Convention 115
AES Convention
115
Paper number
5982
Publication date
October 6, 2003
Session subject
Psychoacoustics; Audio Coding
Affiliation
School of Engineering of the University of Porto (FEUP-DEEC) / INESC Porto, Porot, Portugal ; INESC Porto, Porto, Portugal (See document for exact affiliation information.)
Type
Convention Paper