In this article (part 2 of a two part series describing the work of Hugh Le Caine, who designed and built several different electronic music instruments between 1937 and 1976), the author gives a general overview of the Special Purpose Tape Recorder, the Serial Sound Structure Generator, and the Sonde.
Hugh Le Caine: Pioneer of Electronic Music - part 2
Young, Gayle
1981
Musicworks 17: 20-22.
Language: English