Making vibrato delay - issue running multiple delwrite~ in sequence

Reply to Making vibrato delay - issue running multiple delwrite~ in sequence on Sun, 05 Apr 2020 05:49:18 GMT

paleontologist — Sun, 05 Apr 2020 05:49:18 GMT

Hey there,

I'm fairly new to PD and am trying to hobble together a guitar patch. I have a delay patch currently, and I'd like the delayed signal to have some slow vibrato pitch bend to them as they fade away. The delay patch is basically a simple delwrite~ into a delread~ with a feedback loop to create trails.

The issue I'm having is that when I insert a new delwrite~ (and associated delread~) into the audio path to start the pitchbend part of the patch (after the delay part), the delay part stops working. Is there an issue with PD running several delwrite~ objects in series in a signal chain? Any help would be greatly appreciated.

Edit: the delay patch is essentially similar to this https://guitarextended.wordpress.com/2011/12/12/creating-a-simple-effect-with-pd/ the issue occurs when another delwrite~ and delread~ is added before the dac~

Reply to Making vibrato delay - issue running multiple delwrite~ in sequence on Sun, 05 Apr 2020 06:21:34 GMT

whale-av — Sun, 05 Apr 2020 06:21:34 GMT

@paleontologist Have you given each [delwrite~] and [delread~] pair a different name?..... eg [delread~ del1] and [delread~ del2]..... ?
David.

Reply to Making vibrato delay - issue running multiple delwrite~ in sequence on Sun, 05 Apr 2020 08:09:06 GMT

paleontologist — Sun, 05 Apr 2020 08:09:06 GMT

I did do that to no avail. I ended up changing the patch up and simply copying the G09.pitchshift.pd example, with the input receiving the delay trails. I then set up an osc~ with snapshot + metro to feed continuously varying values into the transposition box in the pitchshift example to give it a decent sounding vibrato.

I have to say I'm not totally satisfied because the solution seems pretty inelegant, and there's a lot of the pitch shift example I really don't understand. If anyone has other ideas, I'd love to hear them!

Reply to Making vibrato delay - issue running multiple delwrite~ in sequence on Sun, 05 Apr 2020 08:33:07 GMT

whale-av — Sun, 05 Apr 2020 08:33:07 GMT

@paleontologist The other possibility is that you created the [delread~] before the [delwrite~]
Pd loads them in the order they were created and the write needs to be there before the read.
David.

Reply to Making vibrato delay - issue running multiple delwrite~ in sequence on Mon, 06 Apr 2020 20:56:27 GMT

Johnny Mauser — Mon, 06 Apr 2020 20:56:27 GMT

@paleontologist i didn*t follow your post all the way, but generally [vd~] (variable delay) is a good object for pitch-vibrato