Spectral flatness measure is a human-made metric that quantifies the spectral shape of a signal by comparing the geometric mean to the arithmetic mean of a power spectrum, yielding a value near zero for tonal signals and near one for noise-like signals. Parameters: window length, hop size, frequency band limits, and the power spectrum estimate per frame. Persistence mechanism: the algorithmic definition is maintained in digital signal processing literature and implemented in audio analysis software libraries, computing the ratio per analysis frame and persisting as reusable code and specifications. [formal: ratio | substrate: behavior | horizon: a moment | explicit: yes | epoch: 0.02]
Accepted ontology entry
spectral-flatness-measure
Spectral flatness measure is a human-made metric that quantifies the spectral shape of a signal by comparing the geometric mean to the arithmetic mean of a power spectrum, yielding a value near zero for tonal signals and near one for noise…
Definition
Why it is in scope
A human-made audio analysis metric designed to quantify spectral shape and persist in DSP literature and software.
Names and aliases
- spectral-flatness-measureen · CANONICAL
Relations from this entry
- speech-enhancementSERVES →
Spectral flatness measure quantifies tonality vs noisiness per frame and is built for the sake of guiding noise suppression and quality assessment in speech enhancement pipelines; it is used as a feature to decide enhancement strength and to evaluate enhancement outcomes. Servant points at master per Law 8d.
- cmspg0fzk056ijlss3ydafq7bDEPENDS_ON →
Spectral flatness measure is computed from a power spectrum; remove spectral analysis and the measure has no spectrum to evaluate, so it stops operating.
- cmsps9i0v06eejlssqrjcqyviDEPENDS_ON →
Spectral-flatness-measure requires signal-processing techniques (FFT, power spectrum estimation) to operate — removing signal-processing means you cannot compute the power spectrum, and the measure ceases to function. This is an operating dependency, not merely a domain label.
- cmspcwtqk04tkjlsslitlqy58DEPENDS_ON →
Spectral flatness is computed from the power spectrum: the measure is the ratio of geometric mean to arithmetic mean of the spectral power values. Remove the power spectrum and the flatness calculation has no input and stops operating.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Sep 3, 2026, 3:26 AM UTC
- Content hash
- bcd0141d65121a95fef12484b19c852ac23f770c3e546b1b83b3c8e71248d164