“undermodulation”的英文意思_释义_用法

单词

undermodulation

释义

ˌundermoduˈlation Radio and Cinemat.
[under-¹ 10 b.]
Modulation that is less than it need be, so that the available capacity of a transmitter or medium is underused or the signal is too weak. So underˈmodulate v. trans., -ˈmodulated ppl. a.
1940Chambers's Techn. Dict. 877/1 Undermodulation.1962A. Nisbett Technique Sound Studio v. 94 Programme meters... Its uses are:..(ii) to provide indications of levels which would result in under- or over-modulation at the recorder or transmitter.Ibid. 100 Reducing the effective service area of the transmitter by undermodulating a whole programme.1974Listener 2 May 573/3 Why are the transmissions on Radio 3 invariably under-modulated?

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