During the past few weeks I've been trying to set my foot in this pd thing. The weird part about it is what is seemingly complicated is often much easier to do than I thought, and I end up getting totally blocked by the things I thought would be real simple.
So I got this fft reverb thing I borrowed from the examples. Instead of having the audio signal going straight in, I want to have a fade lasting 2 seconds (or whatever) every time an attack is detected; ie I don't want attacks to be analyzed by the fft reverb.
Attached below is my patch, so you can see what I'm talking about:
The only object I know that detects audio attacks and sends out a bang is the [fiddle~]. So I hook the attack banging to the message [1 2000( going into the [line~~], so
[adc~]
! \
! \
! fiddle, bang on attack, [1 2000(, line~
! /
[*~]
!
!
[pd fft] etc.

Am I way off? Why doesn't that do anything? I don't even get any error messages.

Thanks, sorry again for being such a noobie!

Lewis

http://www.pdpatchrepo.info/hurleur/attackpianohold.pd

What's happening there Lewis is that the first time you detect an attack the line ramps upward as you intend - all works fine. But - the line now stays at 1.0 forever. So it works the first time, but not thereafter. You need to add a second detection stage, one that detects when the input falls below a threshold and triggers the line with a [0 2000( message to fade out the effect and return the line to its zero position.

a.

Thanks a billion! seems pretty obvious now that you point it out!

Lewis