1. a device that changes or controls the characteristics of a signal, wave, or current
Usage: electronics; telecommunications
2. something that adjusts or varies the intensity, tone, or pitch of something else

Examples

• The radio's modulator converts the audio signal for transmission.
• A frequency modulator changes the carrier wave's frequency.
• The voice modulator made the singer's voice sound robotic.
• Engineers tested the new digital modulator in the lab.
• The amplitude modulator controls the strength of the radio signal.
• Musicians use modulators to create different sound effects.
• The modulator failed, causing static in the broadcast.