W4 Listening to Perceptual Audio Coders
Chair: Markus Erne, Scopein Research, Aarau, Switzerland
Panelists:
Jürgen Herre, Fraunhofer Institute for Integrated Circuits, Erlangen, Germany
Bernd Edler, University of Hannover, Hannover, Germany
Heiko Purnhagen, University of Hannover, Hannover, Germany
Antonio Pena, Universidade de Vigo, Vigo, Spain
Gerald Schuller, Fraunhofer Institut, Ilmenau, Germany
Summary
Low bit rate audio coding has become a widely used technology during past years. By the use of sophisticated signal processing techniques, exploiting psychoacoustic phenomena, non-transparent coding results in artefacts sounding very different from traditional distortions which are frequently not obvious at all to the untrained listener.
The AES Technical Committee on Audio Coding therefore has produced a CD-ROM which presents some of the most common coding artefacts in more detail. The CD-ROM not only explains and comments on each of the coding artefacts separately but for each artefact audio examples are presented, using different degrees of distortion, varying from ‘subtle’ up to obvious. During this workshop, members of the AES-TC on Audio coding will present these artefacts in more detail and discuss their influence in practical coding applications.
