Adjacent-channel interference occurs when signals from nearby frequency channels interfere with each other, causing distortion or degradation in communication quality. This is particularly common in radio and television broadcasting, where channels are closely spaced. When a device receives signals from both its intended channel and a neighboring one, it can lead to confusion and reduced clarity. This type of interference can affect various technologies, including cellular networks, Wi-Fi, and broadcast radio. To minimize adjacent-channel interference, engineers often design systems with adequate spacing between channels and implement filtering techniques to isolate desired signals from unwanted ones.