Page  376 ï~~MODULAR DSP PERFORMA COMPOSER/PROG Daniel Brandt Ave. de la Floride 34 1180 Brussels Belgium ABSTRACT: This paper describes a digital sic developed by the author at the Royal Conservat A presentation then follows of the system's rm the availability of its hardware, which is n components, 2) its portability, making it us( flexibility, allowing the implementation f algorithms, and 4) its interactivity. The particular discussed, followed by examples of several musi

Page  377 ï~~Hardware The system is designed around one or more Atar exlusively to digital signal processing realtime applications, so while an ST' Large amc with four m three minutes of 8-bit, mono, digitized sound (at a under-use the memory capacity of even a one megal The fact that this "DSP" comes with its own disi environment encourages a hands-on, interactive apl software development is finished, the DSP Ataris d during performance, thereby increasing the system's A separate Atari is reserved for high level function MIDI and ROM ports, schedules events, runs con controls one or more DSP Ataris via its MIDI-o together using a properly wired MIDI cable that allc A/D and D/A conversion is done using inexpensive ACN computer club in Haarlem. These converters,

Page  378 ï~~Applications In the classroom, this system can easily be used synthesis techniques. For instance, illustrate th sound, I wrote a routine that allows a student to drat the mouse and immediately hear the resulting timbre In October, 1989 1 created a computer sound instal gallery in Den Bosch, the Netherlands. It consisted from a radio and another processing input from a cor controlled the DSP' and "listened in" on the microj public was speaking into it. When this occurred, t signals began and proceeded according to structures g My main interest, though, has been in composing i two pieces using this system. The first, Folk Musi computers. The computers provide accompaniment processing its sound with two routines I developec wave regeneration, a process that creates a pitched d the input.