Imulse respons; how does it work? (RV7000 mk2)

Osmose

Reason Producer
So, just heard about the impulse respons function on the RV7000mk2. A great function! But, im left wondering how it works?

I figured, when i heard about it's function that, you would need a raw verb less sample and one with reverb acoustic so it could subtract and calculate the reverb algoritme. But as it seems, you only need the one with the acoustics?!

Very convenient offcourse, but like mentioned; im left wondering how the hell does this work behind the curtain?


this is just outta curiousity and the craving for some extra knowledge
 

Runcell

LR Member
I have read how it's done but can't for the life of me remember..and it would take some real finger poppin' time to explain here. You just need a fairly decent mic to capture sound spaces. Some reverb units allow us users to use our own captured IR's and load them in.

All I know is they sound much better (I have ALTIverb) than traditional algorithmic types.

Sorry can't give you more Osmose. I'm gonna do the ol' check it out on google spiel but also look for sound on sounds explanation, if they've done one, it'll make more sense.
 

Osmose

Reason Producer
I think i might do some googling as well. Think getting some more insight in it might help towards doing more creative stuff.

@vocoderboy: no, that wasnt what i meant ;)


But i do know im gonna heavily experiment with it when ive done the update! I'll probably end up stealing my girlfriends laptop to capture some outdoor acoustics and build my self a library..
 

brandtkalk

Reason Engineer
hello , I tried it yesterday and it work verry well. it's a killing convolution verb.
I tried with diferent convolution bank from other vst. it's great. NOT TOO GLUTON with cpu.
Mr Osmose. you can create you own convolution by registering a percusive sound in a specific space. after the recording you remove the originally sound and keep only the trail. that is the "cliché" of the space.
after you open it in your convolution verb and module it.
a great option also is the reverse. great FX.
As explained on the reason site you can use any sound , not only a reverb sound. the possibilities are bigs.
There is something comparable in equalizing.
If you can try the Q-CLONE from WAVES AUDIO. It is the same but in this case you can take a "cliché" from an hardware EQ or any other eq and apply it on all your track in your daw.
This vst is also usefull to analyse the curve of all Eq.
 

Osmose

Reason Producer
hello , I tried it yesterday and it work verry well. it's a killing convolution verb.
I tried with diferent convolution bank from other vst. it's great. NOT TOO GLUTON with cpu.
Mr Osmose. you can create you own convolution by registering a percusive sound in a specific space. after the recording you remove the originally sound and keep only the trail. that is the "cliché" of the space.
after you open it in your convolution verb and module it.
a great option also is the reverse. great FX.
As explained on the reason site you can use any sound , not only a reverb sound. the possibilities are bigs.
There is something comparable in equalizing.
If you can try the Q-CLONE from WAVES AUDIO. It is the same but in this case you can take a "cliché" from an hardware EQ or any other eq and apply it on all your track in your daw.
This vst is also usefull to analyse the curve of all Eq.

I know ;)

the thing i was curious about is how the reverb algoritms are being calculated, since it doesnt need a "dry" comparison to subtract form the "wet" one







EDIT:

Probably the best explainatory article that i could find with out it getting into mathematics and disolving your brain:

https://www.soundonsound.com/sos/sep10/articles/convolution.htm


Interessting read actually
 
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brandtkalk

Reason Engineer
I'm not developer but I thing the logarythm is based on the spectral analyse of the convolution and then this spectral information is used as modulated filter.
 
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Osmose

Reason Producer
ye, that makes sense..

Ah well, i dont think i'll be able to find an in depth view on how it works.

im just gonna experiment the **** out of it when ive done the update
 
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