PAR – Pro Audio Reference
Pro Audio Reference: Concepts, terminology, standards, history, and assorted surprises
The Pro Audio Reference attempts to explain all the various terms commonly used by engineers in the pro audio field. (Scroll down for the full history.) You can either search for a term in the search box above, or click on the first letter of the word in the alphabet shown above. You can use that clickable alphabet to quickly jump around from page to page.
View the full Pro Audio Reference:
https://www.aes.org/par/

Learn all the key terms in pro audio
Created by Dennis A. Bohn
Dennis Bohn received BSEE and MSEE degrees from UC Berkeley in 1972 and 1974, respectively. After completing his MSEE, he accepted a position with National Semiconductor Corporation as a linear application engineer specializing in audio, where he created the renowned Audio Handbook, acting as technical editor and contributing author.

Source: Audio Engineering Society