- Modulation is the process of varying one or more properties of a periodic waveform called the Carrier signal.
- Modulation is the process of conveying a message signal.
- A modulator is a device that performs modulation.
- A demodulator is a device that performs reverse of modulation called as demodulation.
- Modem(Modulatoe-demodulator) can perform both operations. Difference between analog and digital modulation.
