👉 Preexpansion is a term used in computer science and electronics engineering to describe an operation that occurs before a signal or circuit is actually applied to a system, typically prior to any digital signals. It is often used in conjunction with the term "preemphasization" to refer to the process of applying preamplification to a signal before it reaches a certain point in a circuit. Preexpansion can occur in several contexts: 1. Preamplifier: In analog circuits, preexp