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Post by tommygoff on Apr 18, 2014 10:55:23 GMT 1
Hi guys, Need a little help. I'm building a L R Delay. The problem is that the feedbacks are not equal in length when different modulation speeds are selected. EG.: So when the left delay is set on 1/8 steps, and the right delay is set on 1/4 steps, the feedback from the left delay should be doubled in order to make it as long as the right delay. I figured that i somehow should capture the values that comes from the switches and multiply them by a number; depending on the steps selected. Then link/merge the outcome with the feedback knob and that way the feedbacks should be equal to the ear. Project and screenshot attached. Any help would much be appreciated! Greetz. (v1.1850) Delay.se1 (24.25 KB)  |
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Post by KlangManipulation on Apr 22, 2014 14:02:29 GMT 1
ok so.....
i would try to solve it with a third timeswitch.
first you must check the difference between the two timeswitches because i must know witch one is greater or equal.
then i would create a third switch (also with 1/4, 1/8) connected to a "left,right or equal-switch" that is connected to both feedback pins.
the comparison of the 2 switches should be like this:
1) if equal nothing has to be done.
2) if left is greater, send the difference of the time values to switch 3 (mmm maybe its possible to do it without 3rd switch) and switch the "left,right or equal-switch" to the right feedback pin. so the 3rd switch adds a fixed value to the right feedback pin.
this is just an idea but i think it could work like this.
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max
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Post by max on Apr 29, 2014 9:29:31 GMT 1
Hi, several years ago I asked Jeff for help to find the formula for 'equal feedback' but as the result I ended up with a 'feedback balance' slider. Here are the example plugs mxavier.narod.ru/VK_Delay.htm and the prefab Attachments:st_delay_fb_balance.se1 (44.52 KB)
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Post by tommygoff on May 7, 2014 13:36:51 GMT 1
tnx guys. Max: the feedback lengths in the prefab are still not equal, if the modulation speeds are different from eachother, when using a pan module on the feedbacks. so this doesnt work  KlangManipulation: in theory i figured what you suggested, but i still don't know how to "fetch" the "difference values", and when i do, what do i do with those values? so if left is 1/8 and right is 1/4, the output values (in my case) are 0.5 for 1/8, and 1.0 for 1/4. so the left feedback must be 2x multiplied in comparison to the right feedback. maybe u can add a simple prefab..? would be nice. i can't seem to find anything on the web that can help me. probably there is a very simple solution that i can't figure out OR nobody cares when making a delay plug. would be noobish, because all delay plugs i use have equal delay feedbacks. |
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max
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Posts: 12
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Post by max on May 7, 2014 22:49:49 GMT 1
Of course, if the mod values are extremely different the 'balance' slider won't help - the short feedback value will fade out faster. The prefab was just an idea. Though, you know, I still have to adjust two sliders in both cases (either two separate L&R feedbacks or a feedback and 'balance').
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Post by tommygoff on May 8, 2014 15:36:01 GMT 1
I like the idea, but that doesn't solve my issue ^^ Nice plugins though.
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Post by KlangManipulation on May 8, 2014 19:14:34 GMT 1
hi, i dont have an prefab because it was just an idea to start with. but im intresstef now, maybe i give it a try  btw, witch delays have this compensation? witch one do you use? |
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Post by tommygoff on May 9, 2014 11:17:51 GMT 1
would be nice! been struggling with it for a while...  they all have equal feedback lengths.. all the build-in delays of vsts have equal feedback lengths too. i use karmafx delay and korg mde-x, just because they are easy to use and get the job done. so it's very common, but i just don't get how to do it. |
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Claus
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Post by Claus on May 9, 2014 15:07:17 GMT 1
Sorry for 'intruding'  Knob -> One connection to Left Delay Feedback and one connection to a Floatscaler that then connects to the Right channels Feedback parameter input. Using the ears ( ), it shouldn't be THAT difficult to set up a scaling that fits the purpose. |
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Post by tommygoff on May 10, 2014 13:01:41 GMT 1
I tried that, but that doesn't work..
In theory, i know the formula. Again, if the L delay mod is set to 1/8 steps and the R delay mod is set to 1/4 steps, the feedback of the L delay has to twice as long as the L delay feedback, in order to make both feedbacks equal in length to the ear (and in realtime). Somehow they have to "determine" from eachother which mod speeds are selected, in order to set the feedbacks.. Seems easy, but it's a pain in the @ss.
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Claus
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Post by Claus on May 13, 2014 22:31:03 GMT 1
Hmmm, different delaytimes results in different endtimes - maybe You could 'sample' the last "shortest-delaytime" and "Play It Again Sam!" Joking aside, could it be because it's a log-scaled input? (just a shot from my side) Have to try it out, but not on my SE PC right now. (moving stuff around to better hw etc.) |
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max
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Post by max on May 17, 2014 22:19:14 GMT 1
ping-pong delay fades out equally
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Post by KlangManipulation on May 20, 2014 14:13:24 GMT 1
mmmm ok i tried arround but its more difficult than i thought.
the se-delay feedback seems to be infinitely with 10 volts
and it´s not linear i think. if it is like that a formula istn possible.
maybe it works with a CK-Delay or another delay module.
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