Hi,
 
This may be hard to explain.  I have a rock tune and my bandmate created a solo for a particular section/clip.  I want the solo to not override the 'quiet' of the start of the solo section (it has a very particular basic keyboard that balances that solo start section with the same keys that were played at the beginning of the song; a balance). 
 
What I wanted to do is fade in the solo not rapidly (to not overwhelm the keys at first, so that they are heard, and the atmosphere is created), but bring the solo in using the same kind of sound that I hear in particular techno tunes on occasion.  In a given techno tune, at a particular section, a key part (or whatever) would sound clouded/muddled, fading in, morphing and warping as it gets louder.  At first it sounds tightly constricted to low-end EQ (I assume), almost as if there is no mid and high-range frequencies at the start, and (I assume) a heavy chorus (slow rate, from only low freq to high) progressively brings the solo in.  Ultimately, the fade in results in the solo, after say 3-4 measures at 110bpm, 4/4, morphing into it's proper sound/frequencies/levels.
 
I'm not sure if I explained this properly, probably not, but looking for advice on how to fade in a particular clip in a wavy, from-low-end EQ sound into mid, and then into the normal sound that the solo was recorded at.  I've heard it in techno/dance tunes as a particular part builds.  I can't think of a particular example, because that's not my sort of music.  Can't think of a rock example...
 
ah well, I tried to explain it.  Hopefully someone knows that I mean.  I know I might be able to use Automation to do this, but have no idea on technique, or where to even start.
 
Any input is greatly appreciated.
 
DT

dabturn
...I know I might be able to use Automation to do this, but have no idea on technique, or where to even start...

 
If you need to do something complex with Automation but haven't ever used Automation before, then I would suggest putting your current project aside for now and practising using Automation in a simpler situation until you get the hang of it.

Ignore my recommendation if jumping in at the deep end is your preferred MO.

The classic techno sound I think you are talking about is created by running the sound through filters. It is not volume it is the whole wave form gets morphed. 
look for something like Fab Filter. and words like envelope, cut off frequency etc. It will be in one of the supplied audio efx,, 

I don't know much about techno, but based on your description I'd accomplish it with three automation envelopes: volume, frequency of a low-pass filter, and the wet/dry mix (or send) of a reverb.

 
yes as said you need to run it through some type of filter that gives you a muddy quieter sound at first and then all the brightness at the end.  you can add a volume envelope if the frequency alterations don't do enough to your liking
 
 
i'm pretty sure there are a million ways to accomplish what you want to do here and the answer for you really is to just experiment.  play around and you're going to find a tool that is exactly or close enough to what you are looking for.
 
off the top of my head you can try the free Frohmage and that might be the ticket:
https://www.ohmforce.com/ViewProduct.do?p=Frohmage
from there you would just need to record the automation of twisting a knob or two :)
 
 
 
 

Wow.  Thanks to all of you for the input.  This points me in a more oriented direction.  I had no concept of how to even approach this until reading the responses...  so thank you all.  Seriously.