Sound pressure measurement in decibels. In decibels, 20 times the logarithm of the ratio of the pressure of a sound to the reference pressure, which must be explicitly stated. Also, the pressure of an acoustic wave stated in terms of dynes per square centimeter or microbars.
"DR. COBAN HAS RESTORED ALBUMS AND 45'S FOR ME OVER THE PAST SEVERAL YEARS. HIS WORK IS OUTSTANDING AND HIS CUSTOMER SERVICE IS SECOND TO NONE. HE KNOWS HOW DETAILED I AM AND IS SO PATIENCE AND KIND IN PROVIDING ME WITH THE BEST POSSIBLE SOUND FROM MY RECORDINGS. THANKS AGAIN."
