How do I Kno when I need to compress?
@DJ Mart-Kos
In order to know that, you have to understand exactly what a compressor does. And then you can determine what to use it for. A compressor is like that of an automatic volume fader, when a audio signal goes above a certain point it acts to bring the signal down. It basically is meant to control the peaks in audio, however people use it for many different things. The compressor and Limiter are one in the same the only difference between a limiter and compressor is the ratio difference that tends to be used on the 2 tools.
Practical Uses for a compressor are on Drums. If you use the compressor the right way the drums can have punch and thump. However if you over use the compression ratio then the drums/ or whatever you use the compressor on will be muddy, and smooshed.
A compressor has 5 main components
The Threshold- This is the level by which the compressor will activate. Ie if you set the threshold -5 decibels (DB) Then when the audio input goes above -5 the compressor will activate. So if you want to treat only the loud portions of a signal you will raise the threshold From there We move on to the Ratio
Ratio- This is the amount of compression implied to the audio IE a 4:1 compression ratio means that for for every 4 decibels over the threshold the audio will only rise by 1 decibel over the threshold so if your input level is -10 with a 4 to 1 ratio and the threshold being set to -14 then your final output level will be -13
Attack- Like many vst's Attack and Release- so do compressors. this is how fast the compressor will take action after the threshold is passed.
Release- How long before the compressor goes back to it's normal state.
Gain- Often times after all the compression is done you can make up the gain lost via compression by adjusting the gain knob.
After that a compressors direct opposite is a gate
and what a gate does is only let Audio signals pass through the mix that have a certain Audio level. So if you have a low buzzing noize from a sound that's there and mudying up the mix and you don't need it showing up, you could put a gate on it, killing the sound all together.