Phase difference refers to the angular displacement between the peaks, troughs, or zero crossings of two periodic signals or waves, often measured in degrees or radians. It is crucial in various fields such as physics, engineering, and signal processing, as it affects interference patterns, wave superposition, and signal synchronization.
Signal processing involves the analysis, manipulation, and synthesis of signals such as sound, images, and scientific measurements to improve transmission, storage, and quality. It is fundamental in various applications, including telecommunications, audio engineering, and biomedical engineering, where it enhances signal clarity and extracts useful information.