Electronically Synthesized Music
Article Abstract:
Composers, sound editors, and performers are commonly using electronic synthesizers for all kinds of music today. Synthesizers combine waveforms to produce an unlimited variety of sounds. One method adds a small set of harmonic overtones which vary over time in frequency and amplitude. Another technique modulates the fundamental frequency by another frequency. The Synclavier Two synthesizer by New England Digital Corp. uses a minicomputer to create sounds using a combination of the two techniques. The Fairlight Computer Music Instrument by Fairlight Instrument Pty. Ltd. can produce sounds based on natural sounds and also based on additive synthesis. Screen displays and graphs illustrate synthesis techniques and instrument functions.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1983
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Low-Temperature Reactors for Space Heating
Article Abstract:
The USSR is operating low-temperature nuclear power plants, and France, Sweden, and Canada are developing such low-cost plants. The Slowpoke experimental reactor, built by Atomic Energy of Canada Ltd. is such a low-temperature reactor. A Scandinavian reactor will be a 200 to 400 MW plant that will provide service for towns of 50 to 150,000 people. The Soviets are studying a low- pressure boiling-water reactor and a design which uses an organic fluid as a coolant and a moderator. These efforts are all a reaction to climbing costs and rising interest rates, which have attacked nuclear power. Diagrams are shown of the Slowpoke, Scandinavian, and French reactors.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1984
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Technology and the Military: DOD's Darpa at 25
Article Abstract:
The Defense Advanced Research Projects Agency (Darpa) marks its twenty-fifth anniversary in 1983. The agency finds high- risk projects that nobody else wants and that radically change military technologies. 'Star Wars'-type weaponry and supercomputers are projects undertaken by Darpa. A table lists current agency programs.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1983
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