Kfx Reverb : PLATE & SPRING reverb types ?

wengweng · Post by **wengweng** » 15 Sep 2006 12:26

Hello
I dig a big lot KarmaFX reverb, it sounds very good, uses low cpu, and has a lot of versatility.
There is one thing that lacks in my VST reverb plugin everyday use, it is convincing (or free/cheap) dark plate and boingy spring reverbs.

I know it is very hard to reproduce convincing spring emulation, but i dream that if KarmaFX could implement such reverb types among the existing ones (hall, room, etc), and could be of the same quality with all the nice features : wow, this would be just great !
So, yes, this is a Feature Request : "i'd like to see (hear) plate & spring reverb types in KarmaFX reverb", please...

Post by **karmafx** » 15 Sep 2006 12:50

Thanks for the request....actually, you are not the only one asking for this

Next release (coming out later this month) will have lots of extra new reverb presets. This might (or might not) be what your'e after. It's not exactly doing spring emulation you see, but still worth checking out.

I'll consider adding real spring emulation.
If you have any reference links to what sound your'e after, that would help...

wengweng · Post by **wengweng** » 15 Sep 2006 13:04

Thank you for your quick reply (and i'm glad for two reasons : 1-this request is taken in consideration, and 2-there will be an update next month !! wohoooo !).

But i must say that i have been looking for this since quite a long time, and i really think that Plate and Spring reverbs have a very specific sound that you can't reach only in tweaking the settings of existing reverb types (like "hall", or "room", etc). SO i don't know if by "new presets" you mean different tweakings of the same reverb types or implementation of new types, but as Spring and Plate are different way of making reverb, the core sound is very different.
I have read many times that doing proper spring emulation was extremely hard to reach, as it relies on some modulation & resonance and reacts tyo velocity in put signal in a hard-to-reproduce way, but when i hear the quality of Kfx reverb's sound, i am quite confident in your skills

I will post some examples if it can help

Post by **karmafx** » 15 Sep 2006 13:29

actually it will come out later *this* month

but Thanks, yes, examples would help.

wengweng · Post by **wengweng** » 15 Sep 2006 13:36

Yes, sorry : "this" month is even better !

Here are some examples on beats (where you can hear the very specific "boing" effect when the impact is louder).
These are mainly spring examples (but also one Plate, the mp3 is trather explicit), made using both my hardware spring unit, and convolution IR through SIR. No additional efx.

I hope it can help.

link : http://stashbox.org/uploads/1158323671/ ... %20mp3.zip

Spring reverbs are often heard on guitars in surf music, in dub (in association with delay), and also on many stick drums in various Squarepusher's albums.

Plate produces a wider sound, very dark with extreme damping and some modulation and resonance. It was huge hardware modules.

wengweng · Post by **wengweng** » 15 Sep 2006 13:44

Here are some plate reverb links and pix :

http://www.record-producer.com/learn.cfm?a=75

the EMT 140 used the concept of vibrating a large, thin metal sheet (about 1x2 meters and half a millimeter in thickness). The metal plate was suspended by springs from a rigid metal frame enclosed in a heavy wooden case. The vibrations were generated by a center-mounted transducer (essentially a speaker-style driver) that was amplified and fed from an effects send, with the reverb output coming from a mic-style pickup transducer placed at the outside of the plate. The system?s ?reverb time? was controlled (or at least kept from going out of control) by a damping pad that pressed against the plate.

The results hardly sounded like a cathedral but were thick and diffuse, and well-suited to vocals and drums. Given their massive size, 400-plus-pound weight and need to be placed in a vibration-free/noise-free space, plates were hardly the perfect solution but sounded far better than spring reverbs and were much cheaper than building acoustic chambers. In 1961, EMT debuted the Model 140S, which added a second output pickup for a stereo effect. Even with the power of modern DSP to conjure up almost any space, nearly all of today?s digital reverbs include plate reverb programs.

Post by **karmafx** » 15 Sep 2006 13:53

Thanks for the info! yes it does sound nice!

if you have the impulse response used for the convolution that would be helpful too .... you can send it to me by mail if thats easier.

wengweng · Post by **wengweng** » 15 Sep 2006 14:02

here you can find nice impulses (some of the ones i used come from here) :
http://www.xs4all.nl/~fokkie/IR.htm

And the big site for impulses is here :
http://noisevault.com/nv/index.php?opti ... &Itemid=29
http://noisevault.com/nv/index.php?opti ... cat&cat=23

and also some Plate :
http://noisevault.com/nv/index.php?opti ... tcat&cat=9(but to my taste, they sound a little too "clean", where nowadays of digital 'perfection', when we think about Plate, we look mostly for a less natural-sounding, more colored sound).

Post by **karmafx** » 25 Sep 2006 00:17

I found this:
http://www.uaudio.com/webzine/2006/april/index2.html

shows that modeling spring reverb is not so easy....but not impossible

...I promise to look into it later!