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  #1  
Old 2009-08-09, 12:37
fantasque
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questions about drRex / sidechain effect

hi community!

today ive got some questions about drRex and sidechain effect.

about the drRex, what exactly does the amplitude do?
i am using it to get the beat louder but im sure amplitude its not just about loudness!? is it about "filling the drumloop in"???

my questions about the sidechain effect (lets take a sidechained pad for example) are:
most important thing about the sidechain effect using the m-class comp is the TRESHOLD. the TRESHOLD settles the amount of the effect the kickdrum is having on the pad, right"!? and a wide ATTACK and RELEASE give a more natural feeling to the sidechain effect, right!? a short ATTACK and RELEASE give a more "sharp-edged" feeling to it, right!?

am i on the right track???

(by the way, ive found a nice video how to set up a sidechained pad in reason, so if anyone wants to have it id be happy send it to ya via email. or is there any chance to upload a video onto this forum?)


thanks for your help!
chris
  #2  
Old 2009-08-10, 00:58
kage630
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i wrote a tutorial on side-chain compression (specifically for ducking, which is what you're asking about) here: http://www.reasontutorials.net/2009/...ason-tutorial/

to answer your questions, the amplitude slider in dr. rex simply scales the waveform coming out of the device - so raising the amplitude will make the sound 'louder' in the sense of higher peak amplitude (but not in the sense of average power - for that you would need something like a compressor).

regarding sidechaining for the purpose of bass-ducking, the most important settings are ratio, followed by threshold, followed by attack and release. ratio is the amount the compressed signal is attenuated when the sidechain input exceeds the threshold value - so a high ratio will give a more pronounced effect, and a lower threshold will cause the compressor to kick in at lower sidechain-in amplitude values. however, if you are using your kick drum as your sidechain in, the amplitude for that signal is going to be more or less equal and very high each time for each kick, so the threshold value isn't going to have much impact on your sound.

regarding attack and release values, you're right - short values are going to make for a dramatic, more 'effect-y' effect, whereas longer values will make for a more natural sound. whether you want a natural sound is up to you
 

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