“de、emphasis”的英文意思_释义_用法

单词

de-emphasis

释义

de-emphasis|diːˈɛmfəsɪs|
[f. de- II. 2 + emphasis.]
A lessening or removal of emphasis; spec. in radio communications, a reduction in the relative strength of higher audio frequencies made in order to restore the original form of the signal.
1940RCA Review Jan. 359 A de-emphasis circuit at the receiver.1942A. Hund Frequency Modulation ii. 221 Networks for a-f accentuation and deaccentuation are also known as circuits for a-f preemphasis and deemphasis respectively.1957K. W. Wittfogel Oriental Despotism 7 These methods, which use distortion and de-emphasis rather than open discussion.1962A. Nisbett Technique Sound Studio 254 Pre-emphasis of top (i.e. prior to transmission), with a corresponding de-emphasis at the receiver, helps to reduce the noise level still further.1965Economist 2 Jan. 27/3 The new policy aims were marked by major de-emphasis on air defence.

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