Explore the fascinating world of Audio Bandwidth Extension (BWE) with this comprehensive guide from The Bookish Owl. This essential volume delves into methods that enhance the perceived or actual frequency spectrum of audio signals, crucial for restoring lost audio content from recording, transmission, or reproduction. Focusing exclusively on BWE, it offers an all-encompassing approach covering theory, applications, and algorithms. Discover key concepts in psychoacoustics, signal processing, and loudspeaker design. Learn about BWE’s application to music, speech, low-frequency sound reproduction, perceptually coded audio, and noise abatement. This book is a vital resource for engineers, researchers, and students in audio, signal processing, and speech seeking the latest developments and a coherent framework for BWE.