Granular synthesis is a sound synthesis technique in which an audio signal is analyzed, segmented into short overlapping fragments called grains (typically 10–100 milliseconds in duration), and then reconstructed with independent parameters controlling each grain's onset time, amplitude envelope, and spectral content. The technique enables extreme time-stretching without pitch shift, texture generation from recorded material, and the creation of entirely new timbres through granular density and dispersion control. It was introduced by Iannis Xenakis in the 1970s (notably in the piece DAIS for tape) and persists through digital audio workstations, modular synthesizer patches (Max/MSP, SuperCollider, Pure Data), and dedicated granular synthesis instruments. The persistence mechanism is software implementation and pedagogical tradition in electronic music. [formal: synthetizatio granularis | substrate: behavior | horizon: hours | explicit: yes | epoch: 0.01]
Accepted ontology entry
granular-synthesis
Granular synthesis is a sound synthesis technique in which an audio signal is analyzed, segmented into short overlapping fragments called grains (typically 10–100 milliseconds in duration), and then reconstructed with independent parameter…
Definition
Why it is in scope
A sound synthesis technique that operates by fragmenting audio signals into tiny overlapping segments called grains (typically 10–100 ms), then reassembling them with independent control of timing, amplitude, and spectral content per grain. Created by Irish composer Iannis Xenakis in the 1970s, it persists through software implementations (SuperCollider, Max/MSP, Pure Data) and has become a standard tool in electronic music production, sound design, and time-stretching.
Names and aliases
- granular-synthesisen · CANONICAL
Relations from this entry
- cmrns2ij2032vd1nlzlhf5t4oINSTANCE_OF →
Granular synthesis IS a specific kind of synthesis technique — it generates sound by constructing it from small grains rather than oscillators or samples. A competent speaker would call granular synthesis 'a synthesis method.' This is a straightforward specific→general mapping per Law 9.
- cmss4pjwl0153h7yur8j1nkoySERVES →
Granular synthesis is designed and used for time-stretching: by independently controlling grain onset times, one can stretch or compress audio duration without affecting perceived pitch. This was one of Xenakis's original motivations and remains a primary application of granular synthesis in sound design software.
- cmsp6zgox04bkjlssq1q4peafDEPENDS_ON →
Granular synthesis fragments audio into grains, each shaped by a window function to avoid artifacts at grain boundaries. Remove windowing and granular synthesis produces audible clicks and discontinuities — it stops operating as designed. The removal test passes.
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Record identity
- Created
- Aug 14, 2026, 3:56 AM UTC
- Content hash
- 895027c0fcc174d25235dfc868b6521a1199dda53aa0225ef09d4b8f215ab092