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单词 out-band
释义

out-bandn.

Brit. /ˈaʊtband/, U.S. /ˈaʊtˌbænd/
Origin: Formed within English, by derivation. Etymons: out- prefix, band n.2
Etymology: < out- prefix + band n.2
1. An external wrapping or covering. Obsolete. rare.
ΘΚΠ
the world > space > relative position > condition of being external > covering > wrapping > [noun] > a wrapping
wrapping1387
fardela1425
wrapc1460
wrapperc1460
fold1497
out-band1621
wrappery1662
embalment1697
emballage1714
woolding1729
enwrapment1753
wrappage1827
lapping1858
1621–31 W. Laud Serm. (1847) 176 The out-band of the body is the skin.
2. Telecommunications. A range of frequencies or digital signals outside the band usually used for message transmission, but carried on or associated with the transmission channel. Usually attributive.
ΚΠ
1967 Ericsson Rev. 44 28 A system of signalling which has been widely used for some years in carrier systems is the semi-continuous low-level out-band method.
1984 J. Dunlop & G. G. Smith Telecommunications Engin. x. 333 Out-band signalling is more attractive than in-band, but cannot always be applied without considerable expense to existing transmission plant.
1995 Conf. Proceedings Internat. Conf. Acoustics, Speech, & Signal Processing IV. 2249/1 There are two subband-based methods proposed which combine the process of motion compensation and the process of subband decomposition, namely out-band and in-band compensation.
This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).
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n.1621
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