Lecture
This lecture introduces the concepts of signals and filters, focusing on the process of converting analog signals to digital, compressing data for efficient transmission, and reconstructing signals at the receiving end. It covers topics such as representing physical reality with bits, measuring information quantity, and minimizing data storage space. The lecture also delves into signal types like sound waves, black-and-white images, color photos, and videos, emphasizing the importance of signal processing in modern communication systems.