The frequency spectrum performs one of the main characteristics of a process. The aim of the paper is to show the coherence between the process and its own spectrum and how the behaviour and properties of a process itself can be deduced from its spectrum. Processes are categorized and general principles of their spectra calculation and recognition are given. https://www.diegojavierfares.com/best-price-Vinyl-Wall-Decal-Sticker-Gymnastic-Rings-815-quick-super/