
Originally Posted by
buffo
I know you were kidding, but for those that might still be confused and are too embarrased to ask, ADAT stands for Alesis Digital Audio Tape. It's an old digital audio format that records 8 tracks on a single tape. The tape cartridges are the same ones that are used in VHS VCRs, with the exception that the data is stored digtally on the tape.
Back in the day, ADAT was the cat's meow if you had a fixed laser projector installation. After a show was created, it was recorded onto the tape (one channel for x, one for y, one each for red, green, and blue, plus two tracks for the stereo soundtrack that went along with the show, leaving 1 spare track for special effects), making it easy for an operator to play back the show later. Just load the tape and press play...
Some planetariums still use ADAT for laser shows, but they're not as popular as they used to be.
Adam