Modulator

A modulator is a device that adjusts a signal's characteristics, such as its strength, frequency, or phase, to prepare it for transmission over a communication system. Think of it as packaging information—like voice or data—into a suitable form that can travel efficiently through cables, airwaves, or fibers. Modulation helps ensure the transmitted signal can be accurately received and understood at the other end, especially when sending signals over long distances or through noisy environments. Essentially, it enables effective and reliable communication by shaping the signal to fit the medium and system requirements.