Analog modulation is a technique used to encode information onto a carrier wave by varying its amplitude, frequency, or phase. This process allows the transmission of audio, video, or other signals over distances, making it essential for communication systems like radio and television. Common types of analog modulation include Amplitude Modulation (AM) and Frequency Modulation (FM). In analog modulation, the original signal, such as a voice or music, is combined with a carrier wave, which is a continuous wave at a specific frequency. The resulting modulated signal can then be transmitted through various media, such as air or cables, allowing for effective communication between devices and systems.