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English definition of “modulate”

modulate

verb [T] (BROADCASTING)    /ˈmɒd.jʊ.leɪt/ US  /ˈmɑː.dʒə-/ specialized
[T] to mix an electrical signal that represents sounds or pictures with a radio signal so that it can be broadcastBroadcasting in general modulation     /ˌmɒd.jʊˈleɪ.ʃən/ US  /ˌmɑː.dʒə-/ noun [C or U]
(Definition of modulate verb (BROADCASTING) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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