Short-time energy is the measure of signal energy computed over a short, sliding time window (frame) in digital signal processing. It is calculated as the sum of squared amplitude values within each frame: E[n] = Σ x²[m] for m in frame n. It persists through mathematical formulation, software implementations, and standardized audio analysis pipelines. Used in speech processing and music information retrieval for voicing detection, segmentation, and event detection. [formal: energia temporanea brevis | substrate: behavior | horizon: a moment | explicit: yes | epoch: 0.13]
Accepted ontology entry
short-time-energy
Short-time energy is the measure of signal energy computed over a short, sliding time window (frame) in digital signal processing. It is calculated as the sum of squared amplitude values within each frame: E[n] = Σ x²[m] for m in frame n.…
Definition
Why it is in scope
A human-made signal processing measure representing the summed squared amplitude of a signal within a short time window (frame). Built to persist through algorithms, mathematical models, and software systems.
Names and aliases
- short-time-energyen · CANONICAL
Relations from this entry
- cmsrq3mlc0008sk5348kt4kl9SERVES →
Short-time energy is designed to serve onset detection — its primary use case in speech processing and MIR is detecting the onset of sounds and events. The removal test: remove onset detection and short-time energy still exists, but the designed purpose relationship holds. Law 8d: servant (short-time-energy)→master (onset-detection).
- cmsrjkxwm01lwkp53y5lqufqxDEPENDS_ON →
Short-time energy requires windowing-function to isolate frames — remove the windowing function and the concept of computing energy within a defined frame collapses. The removal test passes: no windowing, no frames, no short-time energy. This is a genuine operational dependency, not a meta-level 'needs a concept to be said' relationship.
- cmrmkhire00hvd1nlzf4w0f8fDEPENDS_ON →
Short-time energy is computed by summing signal energy over framed segments. Remove the framing mechanism and short-time energy has no operational basis — it is defined as energy within time frames. Constitutive present-tense dependency.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 13, 2026, 6:00 PM UTC
- Content hash
- 24acc2cc3383d2239094d47ac6ee4c33e36667116b050ec9d56b4542f67c3764