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"The original record I had sent was a very old, scratchy, out of print record that our family listened to years ago every Christmas Eve. It was especially played for my Italian grandmother who died in 1983. I cannot describe the emotion in the room when I played the new CD for my parents, now close to 80 years old. The memories were so good, and ..."

Phon

The unit for measurement of the apparent (subjective) loudness level of a sound. At 1,000 Hz, the phon rating corresponds to the measured sound level. At all other frequencies, a sound level which – to the listener – seems to be of the same loudness as the 1,000 Hz tone, is given the same phon rating, regardless of the actual measured sound level.Phase shift, equalizer — The phase shift introduced in a signal path by the insertion of equalization.