What is an External Key In?

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Strbuks

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I have been looking around at gates, and what is an ext. key in? I like to use a good gate on the kick to get some punch, but what is this?

Thanks!
Chris
 
This is from the Digirack plug-ins guide:

You can use the side-chain processing capabilities of the Compressor, Limiter, Gate, or Expander/Gate to trigger any of these plugins from a separate reference track or external audio source.

By using the External Key input, you can control the dynamics of one audio signal using the dynamics of another signal (the
key input). A typical use for this feature is to use one instrument to trigger gating of another: a kick drum to gate and tighten up a bass track, a rhythm guitar to gate a keyboard pad, and many other creative applications.


One cool trick is to use a pulsing audio (like a hihat or a square wave) to gate a voice or an instrument, giving a hard tremolo effect (like Fat Boy Slim's voice on some parts of "Praise You").

Or use a copy of the track, shift it a little foward, and use it to trigger the gate on the original track. That way you "pre-open" the gate as you wish, which could sound more natural.

Here's a good link:

http://www.computermusic.co.uk/tutorial/dynamics/3.asp

Cheers, Andrés
 
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