Intermodulation distortion (IMD) occurs when two or more signals interact within a system, creating additional unwanted frequencies. This typically happens in audio equipment, radio transmitters, and other electronic devices where multiple signals are processed simultaneously. The result is a distortion that can affect sound quality and clarity, making it difficult to distinguish between the original signals. IMD is particularly problematic in high-fidelity audio systems and communication devices, as it can lead to a loss of detail and an overall degradation of performance. Engineers often use various techniques to minimize IMD, ensuring that devices like speakers, microphones, and amplifiers deliver clear and accurate sound.