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单词 self-noise
释义

self-noisen.

Brit. /ˌsɛlfˈnɔɪz/, U.S. /ˌsɛlfˈnɔɪz/
Origin: Formed within English, by derivation. Etymons: self- prefix, noise n.
Etymology: < self- prefix + noise n.
1. Apparently: egotistical writing, likened to an (unpleasant) sound. Obsolete.Apparently an isolated use.
ΚΠ
1897 M. Thompson in Independent (N.Y.) 19 Aug. 1/1 Egotism like that of Walt Whitman, which is self-noise.
2. Noise generated by a device, vehicle, etc., during operation, esp. that which interferes with the detection, reproduction, etc., of desired sounds or acoustic signals.
ΘΚΠ
the world > physical sensation > hearing and noise > thing heard > [noun] > sound > noise generated directly by an object
self-noise1946
1946 C. M. Sternhell & A. M. Thorndike Antisubmarine Warfare in World War II xv. 161/2 Its [sc. an acoustic torpedo] listening sensitivity is limited by its own self noise, which in turn increases rapidly with its speed.
1954 L. L. Beranek Acoustics vi. 174 The self-noise produced by an electrostatic microphone is that produced by the d-c resistance of the crystal or dielectric shunted by the capacitance.
1975 D. G. Fink Electronics Engineers' Handbk. xxv. 125 Self-noise has many directional characteristics..; ambient noise generally has an omni-directional distribution.
2012 Proc. National Acad. Sci. U.S.A. 109 20242/1 The echo sounder's range-dependent self-noise for this frequency increased to levels that masked the acoustic signals.
This entry has been updated (OED Third Edition, January 2018; most recently modified version published online March 2022).
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