overdub some sounds on existing recorded tracks. The Tascam website says the the Model 12 can overdub as well as bounch track and Punch in and Out. I can not find anywhere in their documentation or web site how to OverDub.
As the 12/16/24 are professional level FOH mixers, TASCAM assumes (far too much so in my opinion) a certain level of knowledge in the use of this kind of gear; and their owner manuals reflect that, unfortunately.
I don't own one of these Front Of House live mixers, so can't help directly, but:
- Have you searched the shaded sticky section "Tips & Tricks" thread for any posts about overdubbing, etc?
- Have you searched the shaded sticky section "Video Tutorials" thread for any posts on overdubbing,etc.?
- Have you searched the sticky section "User Videos" thread for any posts that involve overdubbing, etc.?
- Have you searched the 12/16/24 general forum on the terms "overdub", "bounce", "punch"?
To your specific question, unless you articulate clearly what you're trying to accomplish there's no way to get you pointed in the right direction, as the process differs according to the desired outcome. "Overdubbing" could involve
- "sound-on-sound" (also known as "superimposition"): combining a pre-recorded track with "live" new material onto a new empty track; or
- Recording new material on a new empty track.
"Bouncing" combines two or more different pre-recorded tracks onto a new empty track.
"Punching" involves re-recording (replacing) the same material over a portion of a pre-recorded track in the same place on that track; or recording new material on an empty portion of that track.
A google search will turn up numerous reliable professional gear dealer web sites that have informative tutorials and articles about each of these techniques and how in general to apply them. Amazon also carries some very good "beginner" books on home and project recording.
General questions on/discussions of the above techniques (that are not specific to the 12/16/24) should be asked in the "Recording 101" forum of this website (found in the "Rock and Roll" section).