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Introduction

One of the most demanding tasks of electro-acoustic music has always been composition of space. While the basic principles of periphonic sound (re)production have been known for decades, these approaches could not be used in ``live processing''-environments due to the lack of computational power which is needed to do multi-channel signal-processing, the basis of any periphonic production and reproduction, in real-time.

In the last few years, the computer industry has reached a point, where multi-channel digital sound processing can be done on the basis of commercial personal computers.

A system, that can be used for live-rendering of periphonic sources in concert-situation as well as for post-production, has been developed: abcde, an Ambisonic Based Coding and Decoding Environment.



Johannes M Zmoelnig 2002-09-17