The Institute of Sonology is an education and research center for electronic music and computer music based at the Royal Conservatory of The Hague in the Netherlands.
The institute was founded at the University of Utrecht in 1960 under the name STEM ("Studio for Electronic Music") as a successor to the former studio for electronic music at Philips Research Laboratories in Eindhoven. In 1964, Gottfried Michael Koenig became the studio's artistic director. The studio grew under Koenig's leadership, and in 1966 an annual international electronic music course was founded which exists to this day.
In 1967 STEM was renamed as the "Institute of Sonology". International attention increased in 1971 with the purchase of a PDP-15 computer which was used to develop programs for algorithmic composition and digital sound synthesis. During the early years of the institute a series of landmark programs were developed there, including Koenig's Project 1, Project 2, and SSP, Paul Berg's PILE, Werner Kaegi's MIDIM/VOSIM, and Barry Truax's POD.
In 1986, the institute was moved to the Royal Conservatory of The Hague, hosting the International Computer Music Conference there during its inaugural year.
Current research focuses on algorithmic composition, live electronic music, historical reconstructions of electronic and computer music (including György Ligeti's Pièce électronique Nr. 3 and Edgard Varèse's Poème électronique), field recording, sound installations, and sound spatialization. Alongside the annual one-year course, the institute offers Bachelor's and Master's degrees.