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Looking for FDN Reverbs

VST, AU, etc. plug-in Virtual Effects discussion

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Debutante
KVRAF
 
2651 posts since 15 Jan, 2005, from Ottawa, Ontario

Postby Debutante; Tue Sep 10, 2013 12:02 am Looking for FDN Reverbs

The only ones I know are freebies, but I'm interested in at least one commercial one... any suggestions?
xx JPRacer xx
KVRian
 
1309 posts since 25 Jun, 2008, from Montreal, Canada

Postby xx JPRacer xx; Tue Sep 10, 2013 6:50 am

Probably the best one is AriesVerb but I think it's abandonware now.
Winstontaneous
KVRian
 
527 posts since 14 Feb, 2006, from Berkeley, CA

Postby Winstontaneous; Tue Sep 10, 2013 5:11 pm

Sean Costello (of Valhalla DSP) has written a lot about FDNs over the years, and released a Csound FDN reverb years ago. Dunno if they're in the Valhalla verbs (some developers are protective of their designs) but it might be worth asking.
ToneCarver
KVRist
 
442 posts since 12 Aug, 2005

Postby ToneCarver; Tue Sep 10, 2013 6:21 pm

u-he MFM2 is based on 4x4 FDN. It's primarily known as a delay machine but it can do reasonable reverbs too.
Be kinder than necessary. Everyone you meet is fighting some kind of battle.
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Warp69
KVRist
 
214 posts since 12 Apr, 2005, from Denmark

Postby Warp69; Tue Sep 10, 2013 11:42 pm

I assume software baesd FDN reverbs. There're many, but most well known would be VRoom from Sean, Ircam from Flux, Plate 140 from UA etc.
User avatar
valhallasound
KVRAF
 
2856 posts since 14 Nov, 2006, from Pacific NW

Postby valhallasound; Wed Sep 11, 2013 8:47 am

Winstontaneous wrote:Sean Costello (of Valhalla DSP) has written a lot about FDNs over the years, and released a Csound FDN reverb years ago. Dunno if they're in the Valhalla verbs (some developers are protective of their designs) but it might be worth asking.


I have used modified FDNs (i.e. I tend to combine FDNs with other techniques). Some of the ValhallaRoom algorithms are FDN-ish, while others aren't. If it uses a scattering matrix to couple parallel branches, I consider it an FDN, but there is a huge world of possibilities within this definition.

Warp69 is probably correct in his assessment of software reverbs that use FDNs. The Flux one is easy to guess, as these are descended from Jot's reverb work at IRCAM (and the Miller Puckette work that proceeded Jot's), and these were largely FDN. I can hear FDN-ish sounds in some other reverbs, but I'm not going to wager any more guesses.

As far as hardware FDNs, Eventide was making use of these in the 1980s. The Eventide H3000 manual shows a few 6-delay FDNs for the reverb algorithms. Most of the other good hardware reverbs from this time used allpass loops (allpass delays embedded in a larger delay loop), or parallel combs with embedded allpasses. There were some pure Schroeder/Moorer reverbs from this time as well, but these haven't ended up in the "classic" category.

The Csound FDN I worked on was my first original design (back in 1999). It is VERY simplified compared to my current work, but I still like the sound. I'd stick a few series allpasses in front of it nowadays.

Sean Costello
Debutante
KVRAF
 
2651 posts since 15 Jan, 2005, from Ottawa, Ontario

Postby Debutante; Wed Sep 11, 2013 7:22 pm

Warp69 wrote:I assume software baesd FDN reverbs. There're many, but most well known would be VRoom from Sean, Ircam from Flux, Plate 140 from UA etc.


WIKID - that's more than I knew. Everyone's got a major stiffy for Valhalla verbs and I haven't even tried it out. perhaps its time...
rockstar_not
KVRAF
 
4828 posts since 10 Aug, 2004, from Colorado Springs

Postby rockstar_not; Wed Sep 11, 2013 8:50 pm

Ariesverb is alive as far as I can tell. http://www.ariescode.com/index.php

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