| 单词 | red noise |
| 释义 | > as lemmasred noise red noise n. [after white noise n.] Mathematics a phenomenon that manifests the greatest variability in some property principally at lower frequencies; the exhibition of a property to a greater degree at lower frequencies; cf. white noise n. 1, pink noise n. at pink n.5 and adj.2 Compounds 2c.Used chiefly with reference to the analysis of statistical phenomena, typically in climatology, geology, or astronomy, less often with reference to signal noise (noise n. 11a) or sound. ΘΚΠ the world > matter > physics > science of sound > [noun] > random noise white1917 random noise1937 pink noise1961 red noise1961 1961 Ward & Shapiro in Jrnl. Meteorol. 18 642/1 The only other characteristic of these spectra is their resemblance to ‘red noise’, that is, generally higher variance at the lower frequencies (longer periods). [Note] The term ‘red noise’ was suggested by Prof. E. N. Lorenz to describe this phenomenon. 1979 Nature 23 Aug. 672/1 The spectra were calculated using a fast Fourier algorithm, the spectral estimates were smoothed, and a white or red noise null continuum was assumed in a significance testing. 2007 Lincoln (Nebraska) Jrnl. Star (Nexis) 26 Aug. x26 I'm having difficulty concentrating because of too much red noise. I can faintly see the numbers 10 and 17..from left to right on the scoreboard. < as lemmas |
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