Modulation

Modulation is the process of varying a signal to convey information. In communication, it usually involves changing aspects of a carrier wave, such as its amplitude (height), frequency (how fast it oscillates), or phase (position in a cycle). This allows the transmission of data over distances, like radio waves carrying music or phone calls. Modulation helps in efficiently using bandwidth, reducing interference, and enhancing signal clarity, making it essential for technologies like television, mobile phones, and the internet. In essence, it transforms data into a form that can travel through various mediums.