White-noise is a statistical signal model characterized by equal power at all frequencies. Parameters: (1) constant power spectral density across the entire frequency range, (2) zero autocorrelation at all non-zero lags, (3) statistically independent samples drawn from a stationary distribution. The model persists through signal processing theory, communications engineering, and psychoacoustic testing as a baseline reference for system characterization and noise floor analysis. [formal: white_noise | substrate: mind | horizon: a life | explicit: yes | epoch: 0.01]
Accepted ontology entry
white-noise
White-noise is a statistical signal model characterized by equal power at all frequencies. Parameters: (1) constant power spectral density across the entire frequency range, (2) zero autocorrelation at all non-zero lags, (3) statistically…
Definition
Why it is in scope
Human-made statistical signal model: a random signal or process whose power spectral density is constant across all frequencies, producing a flat spectrum. Built to persist as a foundational model in signal processing, communications theory, and stochastic analysis.
Names and aliases
- white-noiseen · CANONICAL
Relations from this entry
- cmrgqx9dq000qyvn12ehpanjuINSTANCE_OF →
White-noise IS a specific kind of noise — it is the case where noise has flat spectral density. A competent speaker would call white-noise 'a type of noise.' Files against the nearest kind per Law 9.
- cmsq6qnfg07uijlss4wzxq5naDERIVED_FROM →
White noise is defined by its power spectral density (flat PSD). The concept of PSD existed first and provided the framework for defining white noise as a signal with constant PSD. Per Law 7: which existed first?
Relations to this entry
- cmssiq4u2005g13a4l7s58thi← DERIVED_FROM
Pink noise is derived from white noise by applying a 1/f spectral filter — white noise existed as a concept first and fed into the development of pink noise as its spectral-shaped descendant. Which came first: white noise (uniform spectrum) predates pink noise (1/f spectrum) in the history of noise classification.
Record identity
- Created
- Aug 13, 2026, 9:41 PM UTC
- Content hash
- cd8215031f4017e03570cb8ed6030257c9cf12c9421faa168b8a477e3c27cb86