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Very long IR reverb
What are the options for using this IR ?
It’s over a minute long!
https://freesound.org/people/acs272/packs/13598/
Via
http://trevorcox.me/tag/inchindown
Comments
I believe that THAFKNAR never truncates IRs but the longer an IR is, the more demanding it is on the CPU and the more there is a benefit to large buffers. I’ve not ever run such a long IR and don’t have a sense of how much stress such a long IR would add.
Curious as to why a long IR would be more demanding on CPU. Isn’t it just multiplying one sample with another? I thought it could be done on a sample per sample basis, so length wouldn’t matter. What am I missing?
Try it
Set your buffer small and load a very short IR. Make note of the CPU usage. Load a very long IR into a convolution app that doesn’t truncate long IRs. Now try.
No.
Just kidding, I’m still just looking at this from a theoretical perspective but it isn’t as simple as I thought. Thanks
Because every input sample has to be multiplied with every sample of the IR.
(slightly simplified but that's the gist of it)
Thafknar supports only IRs up to 60 seconds and you will get an error message.
WoodVerberator loads the file but struggles to turn into a consistent reverb.
JAX Convolutor Pro loads and performs like a champ.
Convolver module in Drambo loads it and sounds fine.
Btw I just happened to listen to this earlier today.
https://pca.st/episode/3763e1fe-30a4-4793-954b-013a63791df5
Shouldn't you just freeze the reverb if you want something that long on your computing device?
AltiSpace 2 sounds gorgeous but is capped at 15 seconds.
Impulsarion (IFX Rack) is capped at 30 seconds.
That isn’t the same at all. A frozen reverb doesn’t have the interesting decay characteristics of a good long IR.
This is true, but a very long reverb is also likely to crash an iPad. There are alternatives to crashing the device.
I get around 40-45% CPU load when using this monster IR in Drambo, on an iPad 9 from 2021, no Pro, no Air.
73 seconds!
Thanks everyone!
I was thinking it was maybe a bit of a stretch!
I don’t have any of the apps suggested…
The place sounds amazing!