Deviations from an original sound that occur in the reproduction process. Harmonic distortion disturbs the original relationships between a tone and other tones naturally related to it. Intermodulation distortion introduces new tones that result from the beating of two or more original tones.
"Just a quick note to say the DVDs that you made from my old Beta tapes arrived and I was very happy with them. I will probably be sending you some more as I dig them out."
