The change of direction, or beriding, of a sound wave as it passes from one medium to another.
"FANTASIC CD will be getting more. I just got done playing my cd you made for the 2nd time all I can say wow !!! this is Fantasic the sound is great been waiting since 1982 when lp came out to play it on cd thanks again will be sending many more lps to put on cd this is really a great service you do For fans of music.done for me Thank you ..."