The Essential Guide to Digital Signal Processing Quotes

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The Essential Guide to Digital Signal Processing (Essential Guide Series) The Essential Guide to Digital Signal Processing by Richard G. Lyons
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“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, The Essential Guide to Digital Signal Processing