Posted by Wayne Parham [ 64.149.49.21 ] on August 01, 2008 at 12:16:46:
In Reply to: Detecting Dolby B encoding on cassettes posted by Hometaper on July 31, 2008 at 15:30:41:
Dolby B is really just treble pre-emphasis with automatic gain control. I've noticed a lot of store bought tapes from the seventies were so cheap they didn't have much HF extension, so the pre-emphasis was lost. My suggestion is to test them by ear, because even if you know a tape was recorded with Dolby B, if the tape doesn't have much on it above 10kHz, I don't think I'd want the Dolby B decoder to take away what little was left.
[ Tape Forum ] [ Help ]