The Sound of Satan, pt 2

Satan, who we are currently casting, is just a voice.  As a result, it is up to us to take the nicely recorded OS  dialog and put it in the hole.  Step one: make the space of a hole.

Previously I mentioned that Satan is 7.5 miles under the ground which is based on a myth.  However, the physical properties of sound that far away from where our characters finally hear Satan are ridiculous enough to ditch realism... the realism of a 7.5 mile deep hole.  So I have been looking at other possibilities, like building a model to mimic the desired reverb of the hole.  Another example is taking a long tube-like item and creating an impulse response (IR) from it which would be used to make the reverb of the space inside that item.  That may also mimic a hole.  Not having a Hell Hole model already built, I tried the latter.

I first found a bunch of free IRs already created by Fokke van Saane.  I ended up playing with the vaccum tube IR, processing it further to create a longer tail with more resonant properties on the lower end of the frequency spectrum.  It sounds much more complicated than it really is. After it was processed several times, I loaded it into Logic's Space Designer.    

The result was encouraging, although still not quite the hole I want to experience in the end. From what I have learned here, I would like to take a longer tube, put weight in or on it and then take create another IR.  This will lengthen the depth of the hole and how it vibrates (as though it were in the ground, and not a free-vibrating plastic tube).  

There is also a question of how much primary source versus reverberant sound should we hear.  That will come in time as we expand our exploration of how to create the correct depth of the hole.  If you would like to make an IR of your own, there are many tutorials on the web with more in depth information.  Please experiment!