Essential Guide to Digital Signal Processing, The Quotes

“To answer a popular question, if we define sound as traveling fluctuations in air pressure, then yes, a tree falling in the woods with no one nearby does indeed make a sound. If we define sound to be the electrical signal transmitted by the mechanisms of our inner ears to our brains, then no, that tree falling in the woods makes no sound.”
― Richard G. Lyons, Essential Guide to Digital Signal Processing, The