Hello Everybody!

Recently i’m experimenting with delay lines and i was thinking about how to get to the extremes and to unusual results. So i also thought about a recursive UDO which creates several delay-lines. But it’s not working as i wish.
This is my UDO:

opcode delayArray, a, akkip
  setksmps 1
  aDelIn, kDelTime, kFdbk, iDelBuf, iInstances xin

  aDelDump delayr iDelBuf
  aDelTap deltap kDelTime
  delayw aDelIn + (aDelTap * kFdbk)
  
  aDelOut limit aDelTap, -1, 1

  print iInstances
  
  if iInstances > 1 then
    aDelOut += delayArray(aDelOut, kDelTime+0.1, kFdbk, iInstances-1)
  endif
    xout aDelOut
endop

And this is what i wish to do:

I want to send a signal to the UDO which then is send to a delay line with feedback. This Signal then i sended into the recursive part till a fixed number of instances is reached.
But this is not working with this. I use print to print my instances - so there i also just get the first and the last. But the whole thing is not working as i thought. Maybe someone can help me?

Greetings,
Philipp
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Hi Scott,

thanks for your reply! I probably solved it and someone else has also some fun with experimenting with this UDO:

opcode delayArray, a, akkip
  setksmps 1
  aDelIn, kDelTime, kFdbk, iDelBuf, iInstances xin

  aDelDump delayr iDelBuf
  aDelTap deltap kDelTime
  delayw aDelIn + (aDelTap * kFdbk)
  
  aDelOut limit aDelTap, -1, 1

  print iInstances
  
  if iInstances > 1 then
    aDelOut += delayArray(aDelOut, kDelTime+0.1, kFdbk, iDelBuf, iInstances-1)
  endif
  
  aDelOut limit aDelOut, -1, 1
    xout aDelOut
endop

Greetings, Philipp

> Am 10.06.2023 um 12:26 schrieb ST Music :
> 
> Hi Philipp, I'm pretty new to UDO's so curious to see where this goes as surely someone understands this better than me.
> 
> It looks like maybe the problem is that the recursion, having some k-rate variables, runs the if loop at k-rate or something like that. 
> 
> At i-rate you see the classic "recursion" print (moving in reverse).
> 
> 
> 
> -odac
> 
> ;================================
> 
> 
> sr = 48000
> ksmps = 10
> nchnls = 1
> 0dbfs  = 1
> 
> opcode delayArray, a, aiij
>   aDelIn, iDelTime, iFdbk, iInstances xin
>   aDel    init 0
>   aDel  = delay(aDelIn + aDel * iFdbk, iDelTime)
>   aDelOut limit aDel, -1, 1
>   prints "\nDelay\n"
>   print iInstances
> 
>   if iInstances > 1 then
>     aDelOut += delayArray(aDelOut, iDelTime+0.1, iFdbk, iInstances-1)
>     print iInstances 
>   endif
> 
>     xout aDelOut
> endop
> 
> instr 1
> a1 = oscil:a(linseg:a(.4, .3, 0), 220)
> aSig delayArray a1, .8, .3, 5
> out a1 + aSig
> endin 
> 
> 
> ;================================
> 
> i1  0  16
> 
> 
> 
> Best,
> Scott
> 
> On Sat, Jun 10, 2023, 4:05 a.m. Philipp Neumann  wrote:
> Hello Everybody!
> 
> Recently i’m experimenting with delay lines and i was thinking about how to get to the extremes and to unusual results. So i also thought about a recursive UDO which creates several delay-lines. But it’s not working as i wish.
> This is my UDO:
> 
> opcode delayArray, a, akkip
>   setksmps 1
>   aDelIn, kDelTime, kFdbk, iDelBuf, iInstances xin
> 
>   aDelDump delayr iDelBuf
>   aDelTap deltap kDelTime
>   delayw aDelIn + (aDelTap * kFdbk)
> 
>   aDelOut limit aDelTap, -1, 1
> 
>   print iInstances
> 
>   if iInstances > 1 then
>     aDelOut += delayArray(aDelOut, kDelTime+0.1, kFdbk, iInstances-1)
>   endif
>     xout aDelOut
> endop
> 
> And this is what i wish to do:
> 
> I want to send a signal to the UDO which then is send to a delay line with feedback. This Signal then i sended into the recursive part till a fixed number of instances is reached.
> But this is not working with this. I use print to print my instances - so there i also just get the first and the last. But the whole thing is not working as i thought. Maybe someone can help me?
> 
> Greetings,
> Philipp
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>         https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
> Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

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Send bugs reports to
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Discussions of bugs and features can be posted here