Pitch-synchronous overlap-add is a human-made time-scale modification method that aligns analysis frames to the signal's pitch periods, windows each period, and resynthesizes by overlap-add with phase continuity. Parameters include pitch period estimate, analysis window shape, hop size relative to period, and overlap-add gain. It persists through formal descriptions in acoustics literature, reference implementations in audio software libraries, and teaching in digital signal processing curricula. [formal: additio superpositio synchrona pitch | substrate: mind | horizon: a life | explicit: yes | epoch: 0.12]
Accepted ontology entry
pitch-synchronous-overlap-add
Pitch-synchronous overlap-add is a human-made time-scale modification method that aligns analysis frames to the signal's pitch periods, windows each period, and resynthesizes by overlap-add with phase continuity. Parameters include pitch p…
Definition
Why it is in scope
A human-made signal processing technique for time-scale modification of audio, built to persist as a documented algorithm in literature and code.
Names and aliases
- pitch-synchronous-overlap-adden · CANONICAL
Relations from this entry
- overlap-add-methodINSTANCE_OF →
Pitch-synchronous overlap-add is a specific variant of overlap-add synthesis where frames are aligned to pitch periods. It is a kind of overlap-add method, not a separate domain.
- cmsqhb9yr0000ti67kxhwaqqbDEPENDS_ON →
Pitch-synchronous overlap-add requires an estimate of the signal's pitch period to align analysis frames synchronously. Remove pitch detection and the method cannot determine period boundaries, so it stops operating as pitch-synchronous.
- overlap-add-methodDEPENDS_ON →
PSGIA requires overlap-add as its core synthesis mechanism — frames are computed by pitch-synchronous analysis but assembled by overlap-add. Remove overlap-add and PSGIA cannot recombine frames. Per Law 8: DEPENDS_ON.
- cmss4pjwl0153h7yur8j1nkoySERVES →
Pitch-synchronous overlap-add is built and maintained for the sake of time-stretching audio while preserving pitch; its sustained practice is for time-scale modification.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 14, 2026, 3:11 PM UTC
- Content hash
- fa83e32c7e67160533d12a2668b16f0fb8718abe7489294e40727c3b87f0c31a