Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Directional Audio Coding: Filterbank and STFT-based Design

Authors: Faller, Christof; Pulkki, Ville

AES Convention 120 · Paper 6658 · May 2006

Abstract

Directional audio coding (DirAC) is a method for spatial sound representation, applicable to arbitrary audio reproduction methods. In the analysis part, properties of the sound field in time and frequency in a single point are measured and transmitted as side information together with one or more audio waveforms. In the synthesis part, the properties of the sound field are reproduced using separate techniques for point-like virtual sources and diffuse sound. Different implementations of DirAC are described and differences between them are discussed. A modification of DirAC is presented, which provides a link to Binaural Cue Coding and parametric multi-channel audio coding in general (e.g. MPEG Surround).

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6658
Publication date
May 6, 2006
Session subject
Spatial Perception and Processing
Affiliation
EPFL Lausanne; Helsinki University of Technology (See document for exact affiliation information.)
Type
Convention Paper