modulate

1. To change the pitch, intensity or tone of one's voice or of a musical instrument. (transitive)
2. To vary the amplitude, frequency or phase of a carrier wave in proportion to the amplitude etc of a source wave (such as speech or music). (transitive)
3. To move from one key or tonality to another, especially by using a chord progression. (intransitive, transitive)

He/she/it modulates · الماضي modulated · التصريف الثالث (اسم المفعول) modulated · صيغة -ing modulating