单词 | self-noise |
释义 | self-noisen.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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