Mechanical noise-making devices invented by Luigi Russolo (1910s) — roars, crashes, rustles reproduced without recording. Early foley alternative for silent film and avant-garde.
Anyone needing experimental film music in the 1910s—machine noises, explosions, traffic chaos—turned to Intonarumori. Luigi Russolo, a composer and Futurist, constructed these mechanical sound sculptures to translate the sounds of the modern industrial world into concert and film compositions. Not melody, not classical harmony—raw acoustic energy, directly from sheet metal, from the whirring of wire strings, from the drone of metallic tubes. In the context of silent film, Intonarumori were what synthesizer sound design does today: a way to control non-instrumental sounds and reproduce them in the studio.
Each Intonarumori instrument was a black box made of wood, sheet metal, strings, and mechanical trigger mechanisms. The musician operated levers and gears to modulate pitch and intensity—similar to the later Theremin, but cruder, louder, less melodic. In film editing, this meant: Russolo or a trained Intonarumori player recorded live to the projection or onto shellac, and the editor synchronized the sound reels frame-by-frame with the visual events. For action, for machine scenes, for futuristic scenarios, this was the standard solution avant la lettre.
The practical limitation was brutal: Intonarumori were difficult to use on set. The instruments were bulky, and reproducibility was fragile—each take sounded different. Therefore, Intonarumori compositions were primarily created as overdubs in the sound studio or as live accompaniment at premieres. Russolo documented his constructions in The Art of Noises (1913), which was technically precise but served more as a source of inspiration for film technicians than as a practical manual.
Today, Intonarumori are historical, digitally emulated, samples in archives. But the conceptual achievement remains: to understand noise as compositional material, not as a disruptive side effect. Anyone who understands ambient sound design or Foley composition is working in Russolo's tradition—consciously or not.