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Spat5 Many Reverbs

Spat
#1

Hey all,

I don’t really get the overall differences in some of the reverberation engines in Spat5. I think I know:

spat5.room~ is source~ + early~ + cluster~ + reverb~.
Is spat5.ircamverb~ the same as Flux IRCAM Verb3 and if yes, where can I set parameters like diffusion for cluster/tail as well as high density?
I own the Flux Verb3 but would like to “mimic” it using the spat5-objects.

Also spat5.reverb.control is a lighter version of spat5.ircamverb?

And finally, what is spat5.everb.fdn~ exactly or what is it based on or in which other objects does it work as the FDN-engine? In room~, ircamverb~ and reverb~?

Thank you :slight_smile:

#2

Hello,

I understand your confusion.

This is correct.

They are ‘mostly’ similar, but FLUX IRCAM Verb has some more features. In particular, cluster/tail diffuseness is not currently available in spat5.ircamverb~.
“High density” mode corresponds to 16 ‘internal’ channels : use @internals 16 in spat5.ircamverb~

Yes, somehow: spat5.reverb.control is similar to the “Decay” tab of spat5.ircamverb.

This is a rough prototype, intended to combine late FDN reverb with image-source based early reflections (generated by spat5.evert~). I recommend not to use this object.

Hope this helps,
T.

#3

Thank you so much! Honestly, I hoped for you to chime in :slight_smile:

Are there future plans to implement cluster/tail diffuseness in spat5? Are there any infos about the rough topology of the IRCAM Verb? I’m interested in reverb topologies – it all started with the Erbeverb – and would love to get a rough overview. No need for full source code ofc. But if there’s some beta testing needed for like the FDN prototype, I’d be available to some extent.

Thank you,
S

#4

Hi,

Are there future plans to implement cluster/tail diffuseness in spat5?

By default, cluster and tail are spatially diffuse in the spat5 library.
There are already a couple of objects that allow for directional vs diffuse adjustment.
For instance, have a look at “pan_rev” control in spat5.oper, or “spread” parameter in Panoramix busses or spat5.verdi.
There’s no short-term plans to add such feature in spat5.ircamverb.

Are there any infos about the rough topology of the IRCAM Verb?

The reverb architecture of spat5.ircamverb is ‘very roughly’ similar to that spat5.spat~ / spat5.room~ / spat5.panoramix~.
In the ‘patching’ tab of spat5.room~.maxhelp, you can get some insights on the internal DSP chain.

But if there’s some beta testing needed for like the FDN prototype, I’d be available to some extent

Thanks for your offer. However, there is no active work on the FDN design at the moment.

Best,
T.