Definitions

1. noun

A change or variation in the frequency or amplitude of a periodic waveform, especially in radio communication or music.

“The radio station’s signal was affected by a modulation in the broadcast frequency.”

2. verb

To change or vary the frequency or amplitude of a periodic waveform, especially in radio communication or music.

“The engineer modulated the signal to improve its quality.”

3. noun

A change or variation in the style or tone of something, especially in speech or writing.

“The politician’s modulation of his tone during the speech impressed the audience.”