Sound spatialisation from a composer's perspective

Multi-channel sound spatialisation is an important topic in composition and production of electroacoustic and acousmatic music. A multi-speaker set up is seen as a complex instrument on which a composition could be performed. From this composer’s perspective the author proposes a system of coded presets and advanced interpolation techniques combined with a design in which sounds in a mix are individual sound objects with individual positions, trajectories, envelopes and acoustic environmental properties. This approach is implemented in cppTK, a scriptable composition and production environment and language for OSX as developed by the author and coded in C++. Among 600 modules are modules that spatialise sounds in a multispeaker setup and modules that use convolution to produce multichannel reverbs, filters and other types of sound modifications. cppTK is able to produce up to 80 channel audio-files.