Post
by anybody human » Fri Aug 20, 2010 1:44 pm
Check out the Tarekith papers, always good stuff in there.
The first thing I try to identify is frequency masking, or where the kick and bass are competing with each other. Sweep thru the low frequencies using a healthy eq boost with a narrow Q. Find the fundamental frequency of the kick, the loudest or most important part, usually around 50Hz-60hz but every kick is different, especially if it's layered. Boost this to taste & widen out the Q a bit, then go to the bass track and cut the corresponding frequency. Now find the fundamental of the bass, usually around 140hz for me, but don't boost it just make a mental note of it. Instead, cut this frequency from the kick. Also add a low shelf below the frequency you boosted on the kick, pull this down so that the bass gets all the sub harmonic frequencies to itself (your kick will still sound huge since you boosted it's fundamental). By sweeping thru you can find other important or problem frequencies, deciding if it's better to cut them directly or cut them on another track to leave room for them.
There are 2 types of sidechain, using a sidechain input to signal compression, or using a sidechain filter which filters out low and/or high frequencies that would trigger compression earlier. For instance, low bass is loud and would trigger compression quickly, so you make filter that out of the input signal. All the frquencies will get compressed, triggered by only what you tell the compressor to listen for. This works really well on drum busses and the master fader. I sometimes even use SC filtering to let the high end of the cymbals thru as well as the low bass. Things seem more alive and present because big bossy freqencies aren't telling the compressor to turn on before the rest of the frequencies join the party.