The purpose of this project was to develop computer programs for use in a hybrid system for electronic music synthesis. The system consists of a D17B Minuteman computer and an Arp 2500 synthesizer. The programs enable a user to create control signals with the D17B for use in any Arp patch.Up to 511 distinct voltage events may be specified. A voltage event is defined as a discrete voltage or as a continuous (ramp) voltage during a specified duration period. A discrete voltage remains constant over the duration. A continuous voltage changes linearly over the duration period. A voltage event is defined in the range of 0 to +10 Volts. An event duration is defined in the range of zero to thirty seconds in any increment of one-tenth of a second.The project was achieved in three steps. First, the user inputs data to the D17B memory describing the voltage events. Next, a program is executed to convert the data to a form usable by the computer. Third, a program is executed which outputs two control signals. One control signal outputs the voltage event; it is used with any voltage-controlled device on the Arp. A pulse signal is output for each voltage event; it is used as a gate for an envelope generator.This hybrid system expands the capabilities of the Arp. It may be used in place of the Arp sequencer to create longer sequences of control signals. The programs give the user exact control over the voltage value and duration of each voltage event. / School of Music
| Identifer | oai:union.ndltd.org:BSU/oai:cardinalscholar.bsu.edu:handle/182137 |
| Date | January 1979 |
| Creators | Anderson, Timothy D. |
| Contributors | Scott, Cleve L. |
| Source Sets | Ball State University |
| Detected Language | English |
| Format | iv, 52 leaves ; 28 cm. |
| Source | Virtual Press |
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