Ping-Pong Delay

[Bit_Arts]

@kazakore

Now the native Delay device has what are called Ping Pong presets. Trying these and you will find you do not get a Ping Pong effect, the audio switches side then stays on that side.

To create a ping-pong Delay all you should have to do is pan the left output to the right and the right output to the left. Then it should feedback to the opposite side each time. To test get a sample, pan it hard to one side, set a Delay with the outputs reverse and play a suitable sample (drum hit or the like.) If you panned left then your Delay with be on the right, but the feedback still goes back on that side so all delays stay on the right side, rather than ping-ponging left and right. This indicates to me that the feedback section is before the output pan faders and thus you can not create ping-pong and I would consider this a fault. Feedback into the Delay device should be after the L/R Pan faders. Or at least optional in some way if you want full backwards compatibility.

A real ping pong delays generally is a self-feeding delay. This means the feedback on the left is a oneshot routed to the right and to the output. Same for the right side feeding the left. With the current delay device this just is not possible. Another thing is a ping pong device normally handles mono signals only, for a good reason. The reason you are mentioning having problems with the pan. The “problem” is in fact it seems Renoise handles every stream, no matter if mono or stereo, as a stereo stream. At least this is how it seems to me, as soon as you do some panning. Actually a panned singal of course is kinda stereo, though not really. The “stereo”-delay then does, what it’s supposed to do. It grabs the hard panned audio signal on the left and the empty “muted by panning” stream on the right and handles both just as a stereo signal. That’s why there is no feedback available for the right then.

But maybe I’m wrong. Just some thoughts.

PS: I’ve setup a stereo PingPong device for download here and added a Mono PingPong with this thread.