Definition of modulate verb from the Oxford Advanced Learner's Dictionary

     

    modulate

     verb
    verb
    BrE BrE//ˈmɒdjuleɪt//
     
    ; NAmE NAmE//ˈmɑːdʒəleɪt//
     
    Verb Forms present simple I / you / we / they modulate
    BrE BrE//ˈmɒdjuleɪt//
     
    ; NAmE NAmE//ˈmɑːdʒəleɪt//
     
    he / she / it modulates
    BrE BrE//ˈmɒdjuleɪts//
     
    ; NAmE NAmE//ˈmɑːdʒəleɪts//
     
    past simple modulated
    BrE BrE//ˈmɒdjuleɪtɪd//
     
    ; NAmE NAmE//ˈmɑːdʒəleɪtɪd//
     
    past participle modulated
    BrE BrE//ˈmɒdjuleɪtɪd//
     
    ; NAmE NAmE//ˈmɑːdʒəleɪtɪd//
     
    -ing form modulating
    BrE BrE//ˈmɒdjuleɪtɪŋ//
     
    ; NAmE NAmE//ˈmɑːdʒəleɪtɪŋ//
     
    Radio technology
     
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  1. 1[transitive] modulate something (formal) to change the quality of your voice in order to create a particular effect by making it louder, softer, lower, etc.
  2. 2 [intransitive] modulate (from something) (to/into something) (music) to change from one musical key (= set of notes) to another
  3. 3[transitive] modulate something (specialist) to affect something so that it becomes more regular, slower, etc. drugs that effectively modulate the disease process
  4. 4[transitive] modulate something (specialist) to change the rate at which a sound wave or radio signal vibrates (= the frequency) so that it is clearer See related entries: Radio technology
  5. Word Origin mid 16th cent. (in the sense ‘intone a song’): from Latin modulat- ‘measured, made melody’, from the verb modulari, from modulus ‘measure’, diminutive of modus.
See the Oxford Advanced American Dictionary entry: modulate