Analog Circuits for Sound Animation
Bernard A. Hutchins · Journal of the Audio Engineering Society · 1980
One important practice of analog music synthesis is the achievement of a harmonically rich and dynamical ly changing sound, the so-called fat sound. This sound is inherently more interesting to the ear than are standard periodic waveforms, and as a consequence, use of an animated sound instead of a periodic waveform enhances any final result, often qui te dramatical ly. A standard practice is to achieve animation through the use of several voltage-controlled oscillators in parallel, with small tuning errors resulting in a rich, slow beating effect. This method is very expensive, however. This report is concerned with devices which use less hardware, and which produce eifects similar to those achieved with parallel oscillators. In addition, new types of animation are discussed.