Last Updated：2025/11/20

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(physics) A random signal (or process) with a flat power spectral density; a signal with a power spectral density that has equal power in any band, at any centre frequency, having a given bandwidth.

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white noise

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Source Word

white noise

Noun

uncountable broadly

(physics) A random signal (or process) with a flat power spectral density; a signal with a power spectral density that has equal power in any band, at any centre frequency, having a given bandwidth.

Japanese Meaning

物理学において、全ての周波数帯域に対して均一なパワースペクトル密度を持つランダムな信号。すなわち、指定された帯域幅内の任意の中心周波数において等しいパワーが分布している雑音。

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Google Translation / DeepL Translation

実験室でフィルターをテストするために、フラットなパワースペクトル密度を持つランダム信号を確率過程としてモデル化しました。

Details

Sense（1）

(physics) A random signal (or process) with a flat power spectral density; a signal with a power spectral density that has equal power in any band, at any centre frequency, having a given bandwidth.

Conventional statistical analyses presuppose that intrinsic variability is white noise. White noise yields a jagged and irregular line with a fractal dimension of 1.5, because successive observations are statistically independent of each other.

Google Translation / DeepL Translation