Mixing Sound

Introduction
These are my notes on mixing of sound. I am not a professional so I would take everything written here with a grain of salt.

Mixing
Mixing live sound including EQ and compressors: http://homerecording.about.com/od/mixinglivesound/a/mixing_live.htm

http://www.behindthemixer.com/content/eq-vocals-101-fix-and-mix

The Compressor (Comp)
Turn compression knob to right to increase compression ratio which
produces smoother sound by attenuating louder signals. This can also
increase feedback however so if you need to reduce feedback then turn the knob to the
left.

Vocals and EQ
You should tune the EQ of someones vocals in order to fix a problem frequency, to add special effects, or to place the vocal in the best place for the mix. For example, cut the backgroup singers in the 3-4KHz range and increase the sound in the range for the lead singer. This gives the lead singer an edge in that range. Increase at 10kHz to brighten the voice. Or reduce a nasally sound by cutting a few db's around the 1kHz mark.