|1.||wow and flutter|
Speed variations in a turntable,phonograph, or cassette player that cause irritating flattening in pitch with sour notes (wow) and/or garbled notes with jerky sharpening in pitch (flutter). Often heard from poorly manufactured, old, or poorly-maintained audio equipment. In the ages when LPs and audio cassettes were the only audio media available, stereo/high-fidelity magazines often used to rate audio components with wow and flutter specifications ranking at the top of the list.
George, your turntable has some nasty wow and flutter. The music sounds sour. It looks like it needs a new belt around the platter.