March 22nd, 2011 
Admin Question by Björn Eberhardt: Dynamic equalizer for treble correction on a live concert recording?
I would need your expert knowledge 
I’ve made a sound recording from a live concert, and noticed afterwards that occasionally someone moved between microphone and speakers, and the trebles dropped as if a door was closed in between…
What would you recommend to use to automatically adjust (amplify) the trebles? (is it called dynamic equalizing?)
Which programs would you recommend? Maybe even which function inside a specific program?
Thanks alot in advance!!
Should I upload a sample from the recording?
Best answer:
Answer by Henré
I don’t know of a program that can do that automatically. What you might be able to do is to use a multiband compressor to compress all frequency ranges independently, followed by a regular (broadband) compressor to even out the overall dynamics. The multiband would reduce the bass when the singer is moving, so in that time your bass and treble will be equal, and then the broadband will bring that whole section’s level up to match the rest of the performance.
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As far as compression settings go for drums, the trick is to preserve the transient attack of the kick drum with a fast but not too fast attack time (9ms in this instance) and then a quick release (11ms) so the compressor is ready to respond to the next kick drum hit. The ratio I use is a relatively mild 2.5:1 and I adjust the threshold until I hear the kick sound I’m searching for. Finally, in order to give the kick drum sound some separation from the rest of the kit, I use a noise gate and adjust the threshold to allow the kick sound to come through while essentially muting the majority of the other drum/cymbal sounds. Also, while setting the attack to the Channel Strip’s fastest “auto” setting, I allow for a long (400ms) release.
So you can also do the same over live concerts. Check out DJ mixers on numark ns7