Modulation Theory by Harold S. Black is a comprehensive guide to understanding the principles of modulation and demodulation. The book covers a range of topics related to modulation theory, including amplitude modulation, frequency modulation, phase modulation, and pulse modulation. The author provides detailed explanations of the mathematical equations and concepts involved in each type of modulation, as well as practical applications of the theory in communication systems. The book also includes chapters on noise and distortion in modulation systems, as well as an introduction to digital modulation techniques. With its clear and concise explanations, Modulation Theory is an essential reference for students and professionals in the fields of electrical engineering and communications.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.