Elektor Formant

The Formant analog modular synthesizer, designed by C. Chapman and published in 1977/78 as a series of articles in the European magazine Elektor. The articles were later compiled into a book and a year later there was another book, (not in English) with additions and extensions by M. Aigner. The Formant is a modular synthesizer, utilising the 1V/octave control.