I have found out that I need a limiter to bring my mixes up to "cd level" I have a limiter plug-in for n-track, but am wondering how it works, what it does, and how best to use it.
Limiters are pretty simple. Set your "out ceiling" (or max level, or whatever it's called) to about -0.3db. You probably won't ever have to change this. Keep the "release" between about 1-2. Now play with the threshold (or compression) level until the music sounds "loud" enough. If you can A/B between a commercial CD of a similar genre, you'll get better results. Don't be tempted to over-do it. More is not always better.
jaycay, are you sure you want to limit, or are you talking about compression???
A limiter is pretty harsh for most applications and is usually used for live sound to protect power amps.
Try a compresser plug-in and search the board for compresser tips.
That's right, it compresses your dynamic range. But you can also increase the gain at the same time, so the quiet bits become louder relative to the loud bits
You want to compress the range. Right now, you've probably got a peak volume around 0db, and an average volume around -15db -12db or so... you want to narrow that gap, while maintaining a peak volume close to 0db, bringing up the average sound level.
Perceived loudness will come from COMPRESSION not LIMITING.
Sure you can just crank an L-2 and make it loud. In most applications it will also sound like crud if you really give it a good hard listen. (unless you are just dealing with a few peaks and maybe not more than -3db )
Learn how to COMPRESS. Learn how to use a good quality compressor, then learn how to use a multiband compressor and how it can be used as EQ and compression.
Learn how to properly and ever so slightly EQ a final mix and how that slight EQ effects the compression and limiting.
Once you have thickened up your wave with compression then stick a limiter last in the chain for additional loudness. Once you have properly EQed, and compressed, then you can crank a limiter a bit more without those nasty artifacts.