Re: How to compress vocals?
as a general rule though, if i wanted to crush something,
thereshold all the way to the lowest it goes,
ratio the the highest, fast attack slow release?
Here's what the controls do;
Ratio - Sets the degree of volume increase vs. output. A ratio of 4:1 means that for every 4 dB of input gain there's a 1dB increase in output. If it was 12:1, then for every 12dB increase the output goes up 1dB.
Threshold - This controls were the dynamic processor will engage. Similar to an input gain, but not really. This needs to be set by ear and in accordance with the rest of the gain staging, like how hard the micpre is hitting the compressor.
Attack - How quickly the processor will react once the threshold is crossed. Too fast of an attack can put a "blip" on the front end of things because it'll let the initial transient through and then clamp down. Sometimes great for drums...
Release - This controls the length of time the compressor takes to come back to "0" once it stops compressing.
Like anything else, every control influences the other controls and like everything else, the "best" setting really depends on what you want to do.
In 'rock' music its pretty fashionable to compress the vocal hard & have the singer right up on the listeners nose. If that's what we want then I'll hit the vocal hard... at least 8:1 if not 12:1 or chain two compressors together on the way in... dig into the gain reduction & it stays back until the singer shuts their trap.
If the singer can really sing I'll kiss it a bit on the way in... maybe 4:1 with an 1176 or 6:1 and just knock off the peaks.
Generally attack is somewhere in the middle... not very fast, and not very slow.
Release time will vary... usually set so that the compressor isn't "pumping" and introducing weird artifacts. Sometimes that means the release is pretty long... especially if there's a lot of compression with a high ratio.
The real difference between a cheap compressor & something really good is in how much you'll be able to squash something before it starts sounding "bad". The mic (and the room to a degree) also makes a sizeable difference here but that's another topic...