In tape recording, the preemphasis and subsequent deemphasis standards used in America and Japan.
"Your service has brought back wonderful Christmas memories for my family . My mom played this one particular Christmas lp since we were toddlers. When I was in High School (13 years ago) I taped the lp to a cassette for my mother because the record was so scratched and warped. Over the years the cassette tape also became distorted. My mom, ..."
