IOSONO has presented the multi channel version of the new Spatial Audio Workstation at the AES Convention in London. Find out more.

In addition a tutorial on object-based production was given:

T5 – Spatial Audio Reproduction: From Theory to Production

Presenters:
Frank Melchior, IOSONO GmbH – Erfurt, Germany
Sascha Spors, Deutsche Telekom AG Laboratories – Berlin, Germany

Abstract:
Advanced high-resolution spatial sound reproduction systems like Wave Field Synthesis (WFS) and Higher-Order Ambisonics (HOA) are being used increasingly. Consequently more and more material is being produced for such systems. Established channel-based production processes from stereophony can only be applied to a certain extent. In the future, a paradigm shift toward object-based audio production will have to take place in order to cope for the needs of systems like WFS. This tutorial spans the bridge from the physical foundations of such systems, over their practical implementation toward efficient production processes. The focus lies on WFS, however the findings will also be applicable to other systems. The tutorial is accompanied by practical examples of object-based productions for WFS.

P5-7 Dual Radius Spherical Cardioid Microphone Arrays for Binaural Auralization—Frank Melchior, IOSONO GmbH – Erfurt, Germany, TU Delft, Delft, The Netherlands; Oliver Thiergart, Giovanni Del Galdo, Fraunhofer Institute for Integrated Circuits IIS – Erlangen, Germany; Diemer de Vries, TU Delft – Delft, The Netherlands; Sandra Brix, Fraunhofer IDMT – Ilmenau, Germany

The direction dependent analysis of impulse response measurements using spherical microphone arrays can deliver a universal basis for binaural auralization. A new method using dual radius open sphere arrays is proposed to overcome limitations in practical realizations of such arrays. Different methods to combine the two radii have been analyzed and will be presented. A plane wave decomposition in conjunction with a high resolution HRTF database is used to generate a binaural auralization, wherein the different designs are simulated under ideal and real conditions. The results have been evaluated in a quality grading experiment. It is shown that the dual radius cardioids design is an effective method to enhance the perceived quality in comparison to conventional spherical array designs.
Convention Paper 7855

DAGA 09

124th AES Convention, Amsterdam