Hello,

I want to make a real time reverse reverb swell on a live input
first I checked freeverb to see how a reverb is made in puredata, but' it's compiled c

so how can I create a reverb in puredata only ? then reverse it ?

regards

@phil123456 "Realtime" reverse is impossible of course.......
Even though all the echoes of the reverb can be calculated faster than real-time, you still have to play them back.

You will need to set a tempo (delay length) for a delay line, record the sample and the added reverb into it, and play it backwards........ https://forum.pdpatchrepo.info/topic/267/reading-a-delwrite-in-reverse

You could play the sample forwards in a separate delay after the reverse Reverb has completed.

If you want complicated rhythms then you will need to use a threshold to detect note length and control a variation of the delay time.

To get the reverse reverb to start as you play the note you could delve into and modify the reflection times and levels in this......... this.zip (inside [pd engine] and [pd auditiontaps] )
David.

@phil123456 check this thing by Pierre Guillot. Maybe it is something you look for.

thanks guys, I'll have a look at these

st-rvb-rvs.meh.pd
https://patchstorage.com/meh-system-1-0/
by @MarioMey

might be another option.

@Johnny-Mauser I was looking at old patch posts and found this reverse reverb, How exactly does this pacth work, I monkeyed around with it but have had no successes?