emulating Live's reverb "freeze" function?

There's a gen patch out there that does it. I think it was called foreververb?

I've built patches like these using parallel feedback delays. I do it with three delays per freeze, with relatively prime times. Set feedback to 100%, and ramp up and then down input to capture.

I use one rand~ as an amp lfo on each loop. (I rhink I scale it so it doesn't go theough zero) This really helps to break up the texture.

All of this is wrapped in a poily~. The reverb approach will of course be smoother, but it will take up more CPU. (Though down sampling could help)

it is as simple as you think: set the feedback to 0.9999 and the input to 0.0 ... frozen. :)
or in other words, it should work with most reverb patches.

if you want to exlude or include the first reflections is a matter of taste. including them can become very ugly when freezing for longer than a quarter of a second, but otoh leaving them in reproduces the phase/room feeling of the normal reverb a a bit more.

thanks guys, nice to know I wasn't completely off base :)

@peter thanks for the relative prime tip, wouldn't have thought of that straight away, so that helps :) - I've made a "delay time complicator" that multiplies by freaky floats, should work alright. - like, for instance, having a 2 3 5 ratio, you're still going to get coinciding delays at 6 and 10 quite quickly on a "forever" feed.

@roman thanks, I'm trying to strip some things I have way down first, then I'll give a simple three-delay thing a go. The thing I love about using reverb freezes is that it seems to capture the "essence" of the input sound quite well.

@Andreas

I would be interested to see the fruits of your labour on this

Brendan

The key for the triple delay approach (and it works best on sounds with a steady state) is to fade the sound in after its attack so you don't have a bunch of transients in a rhythmic loop.

It's not as even as a proper reverb, but can work well with careful tuning. Also, since it's usually less complex, you can run a lot more of them. I do them in a poly~ so I can bring individual ones in and out.

I've always used freeverb/freeverb~ for this, and there's a treasure trove of reverb related stuff at the freeverb3 sourceforge page - http://freeverb3.sourceforge.net - maybe something in there might help?
(ironically, the latest versions of freeverb don't seem to have the 'freeze' function any more)
Cheers
Roger

@roger aah, so the old version may be more hackable for this... interesting!
@peter yeah, I'm hoping to cluster these together so that I don't get any rhythmic information coming through - I may just up the delay amount a bit, too.

What I've done is instead of doing 3 taps on tapout~ I've set up three discrete delays and feedback lines, looking forward to doing some testing on this today.

@Brendan :) I'll keep posting what I've got here... especially since I may end up needing help to poly-ize this properly :headdesk: hehe.

A while ago I experimented with a Schroeder network in gen~, that quite quickly led to fairly good results, including eternal reverb or freezing effect. (Please don't ask me to share the code, in this case I cannot.)

ah, very nice, that's simple enough.

What does the "krt" mean in the diagram, by the way?