A spectral peak is a local maximum in the magnitude spectrum of a signal — a frequency bin whose spectral amplitude exceeds that of its neighboring bins above a specified threshold. The parameters that carve a spectral peak are: (1) a spectral representation (magnitude versus frequency), (2) a peak-finding algorithm or threshold rule that identifies local maxima, and (3) a minimum-separation constraint to distinguish resolved peaks from spectral leakage. A spectral peak persists as a computational construct encoded in peak-detection algorithms (e.g., argmax with windowing, local-maxima search with noise-floor gating) and is sustained through standard signal-processing toolchains (FFT analysis, audio feature extraction, radar signal processing) where it serves as a primitive for pitch detection, spectral-envelope estimation, event classification, and tonal content analysis. [formal: climax | substrate: mind | horizon: a moment | explicit: yes | epoch: 0.01]
Accepted ontology entry
spectral-peak
A spectral peak is a local maximum in the magnitude spectrum of a signal — a frequency bin whose spectral amplitude exceeds that of its neighboring bins above a specified threshold. The parameters that carve a spectral peak are: (1) a spec…
Definition
Why it is in scope
A human-made signal processing construct: a local maximum in the amplitude spectrum of a signal, identified as a point where spectral energy rises above immediate neighbours. It encodes the perceptually salient frequencies — formants in speech, harmonics in music, resonant modes in mechanical systems — and is extracted by algorithms that detect sign-changes in the discrete derivative of the spectrum.
Names and aliases
- spectral-peaken · CANONICAL
Relations from this entry
- cmsop0xz702e7jlssmzq3gk17DERIVED_FROM →
Which-came-first: the spectrum concept predates and feeds into spectral-peak. A spectral peak is a feature identified within a spectrum — you need the spectrum concept first to identify peaks within it. The spectrum existed first and directly fed into constructing the spectral-peak concept.
- cmsqglbgv00763e32jisx8hz3INSTANCE_OF →
A spectral peak is a specific kind of spectral feature — it is the local maximum in a frequency spectrum, representing the strongest frequency component in a given band.
- cmsq4obya07m0jlssh92wv3v0DEPENDS_ON →
A spectral peak identifies the frequency bin with maximum energy within a spectral representation. Remove spectral representation and spectral peak has no data to analyze — it is an operational dependency, not just an association.
- cmssr27qu00ci13a4an6zosq2DEPENDS_ON →
A spectral peak is a local maximum in the spectral magnitude — it requires spectral magnitude as its substrate. Remove spectral magnitude and the concept of a 'peak' in the spectrum has nothing to measure against.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 12, 2026, 4:30 PM UTC
- Content hash
- 9d7f42390caeebc374aea3ac5f79ebf41073d5e879f4e9ca9655ee061a7d3715