May 8 2020, Oeyvind Brandtsegg has written:
...
> In all its simplicity, the result is that frequency bands will be panned
> left and right alternately. The size of the frequency bands are determined
> by the delay time like this: 1000/Bw = Dt. E.g. a delay time of 5 ms gives
> alternating frequency bands every 200 Hz.
This is a nice one. It's sounds like a by-product of mid/side
processing.

I'm not sure if this is an "approved" use, but the hilbert filter also
works and also appears to be mono compatible.
...
instr Play
   a1 soundin "file.wav"
   al, ar hilbert a1
   outs al, ar
endin

Best wishes,

Jeanette
> It is also mono compatible, if you collapse the stereo track to mono, the
> effect will cancel itself out.
>
> 
> form size(330, 150), caption("Stereoizer"), pluginID("ste1")
> hslider channel("deltime"), bounds(10, 20, 300, 40), text("Deltime"),
> range(0, 20, 5)
> hslider channel("amount"), bounds(10, 80, 300, 40), text("Amount"),
> range(0, 1, 0.7)
> 
> 
> 
> -n -d
> 
> 
> ksmps = 64
> nchnls = 2
> 0dbfs=1
>
> instr 1
> a1 inch 1
> a2 inch 2
> a1 = (a1+a2)*.4
> kdelt chnget "deltime"
> adelt interp kdelt
> kamt chnget "amount"
> ;adelt = 10
> adel vdelayx a1, adelt*0.001, 0.1, 4
> aL = a1+(adel*kamt)
> aR = a1-(adel*kamt)
> outs aL, aR
> endin
>
> 
> 
> i1 0 84600
> 
> 
>
> fre. 8. mai 2020 kl. 04:24 skrev Pete Goodeve :
>
>> On Thu, May 07, 2020 at 06:49:16PM +0000, Csounder Csounder wrote:
>>> Hi all,i record sometimes with my smartphone. The file are mono, and i
>> want to simulate a stereo recording. The sound should be "reflected'by
>> "virtual walls" to get deepness and the stereo effect. Is there an opcode
>> that can do that? If not, may someone build some UDO for it?I guess it's
>> not difficult for any intermediate csound user. Thanks in advance!
>>
>> Hi,
>>
>> A couple of suggestions....  You might find that a simple stereo
>> reverb is good enough.  I've used 'reverbsc', which I've found sounds
>> pretty good when applied to, say, my "Hammond" CSD.  There's
>> also 'freeverb', which has an explicit 'room-size' parameter.
>>
>> If you want more explicit 'reflections from walls' you could use one
>> or more delay lines, with the delay based on the distance of the
>> wall from the source and you.  You'd probably want to feed that
>> into a reverb, too, to reflect the real world.  If the 'wall' is on the
>> left, you could only feed the left input of the reverb opcode, and
>> similarly for the right wall.  (Never tried anything like that, but it
>> sounds plausible... (:-))
>>
>> Just some ideas.
>>
>>         -- Pete --
>>
>> Csound mailing list
>> Csound@listserv.heanet.ie
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>> Send bugs reports to
>>         https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>
> Csound mailing list
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> Send bugs reports to
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> Discussions of bugs and features can be posted here
>

-- 
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And when you say those words
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please can you adapt the cabbage code to a .csd code, runnable in csound?
(csoundqt or whatever editor)



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there are four approaches pseudo-stereo techniques in the Csound journal here which may be of interest:
http://www.csounds.com/journal/issue14/PseudoStereo.html