I have a sample looper that is working just fine. It uses vline as a volume ramp when it starts and ends recording a sample. It uses a 7 msec vline. It does not click - however, I would love for it to have a super fast (but still clickless) attack when the sample is played back. However, when I drop below 7 msecs it sometimes clicks.

Would it help to use tabread4~ and an exponential curve instead of vline? (Kind of how Hanning windows work)?

These are LONG samples - up to 100 seconds, so I would need a way to only use the window for the first few msecs of recording.

Thanks!

You can use [cos~] for the "hanning" attack curve. Example:

AttackRelease.pd

@bocanegra Thanks very much. I'm having a hard time wrapping my head around it at present, but I think if I mess with it I can get it.

@Tombot7 It works like a traditional attack/release envelope. The gate inlet controls the on/off stages with 1 for on and 0 for off. The following two inlets set attack and release time.

The [cos~] object when receiving a straight line going from 0.5 to 1 produces half a sine wave going from -1 to 1 so it's output is scaled to be between 0 and 1.

The release stage uses some simple math to mimic the exponential decay of an RC filter. If you want hanning fades on the release part as well, the patch could be simplified drastically:

AttackRelease2.pd
AttackRelease.pd (fixed mentioned mistake)

Here is what their outputs look like:

@bocanegra I spent a little time with this and got my head around it. I then put it in my looper to replace the vlines and it works GREAT. It took the attack from a dull 7 msecs to a nice crisp 1 msec. The attack on this sounds much more like the DL4, which was my goal (I love how that looper sounds). Thank you so much for both the program and for explaining it so clearly!