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Re: [sc-users] Fill array with UGen output



Thanks Dan, for this kind of stuff I actually manually record into a buffer and then do .loadToFloatArray and process, but returning an array with a simple method could be handy in some cases. Will check.

BB.

Dan Stowell wrote:
Function source and its superclass does not expose a .plot method

Yes it does actually - not in the main "Function" class file but in a
separate file named SignalPlusGUI.sc

The method you are looking for is Function:loadToFloatArray

HTH
Dan


2008/12/30 Batuhan Bozkurt <batuhan@xxxxxxxxxxxxxxxxxx>:
Something keeps me thinking about this:

.plot is a lang side method which Function also utilizes. And something like
this works:

{ SinOsc.ar(1) }.plot(1)

So I'm assuming that this kind of communication between server and lang is
already present. If we can buffer and plot the data coming from an UGen with
a simple method, then it should be easy to implement similar functionality
for Arrays (i.e. that gives the values instead of creating a window and
plotting them). I really don't know where to look for adding this though,
Function source and its superclass does not expose a .plot method so I think
its built into the lang at source level (clueless here, maybe its somewhere
else).

BB.

Michael Dzjaparidze wrote:
Alright. The OSCresponder and SendTrig combination is probably the most
simple. The only disadvantage is that you can only receive one value at a
time (I think...). For me this was a problem because I did pitch analysis
and had to put the pitch and the amplitude of a note in a database at the
same time, but if the only thing you want to do is to put some single values
in an array it works great. So a little code example might look like this:
 ~input =  Array.newClear(20);        //Array to put the UGen values in
 (
var count;
count = 0;                                  //Initialize counter to 0
 o = OSCresponder(s.addr, '/tr', { arg t, r, msg;
      //[count, msg[3]].postln;
      ~input.put(count, msg[3]);
      count = (count + 1) % ~input.size;       //Increment the counter,
but wrap it between 0 and size of your input array minus 1
      }).add;
 //Some SynthDef were you want to poll the values from
SynthDef.new("detectPitch", { arg trigID = 1;
    var input, freq, hasFreq, amp;
      input = SinOsc.ar(440, 0, 1);      //A source
    amp = Amplitude.kr(input);
    # freq, hasFreq = Pitch.kr(input, ampThrehold: 0.02. median: 7);
    freq = freq.cpsmidi.round(1);
      SendTrig.kr(Impulse.kr(5), trigID, freq);      //Increase the rate
of Impulse to achieve more precision. Further note that you can send an
array like
                                                              //[freq,
amp] but that OSCresponder will 'unpack' the array into 2 separate values so
you can't use it
                                                              //to write 2
values into an array at the same time.
    }).send(s);
)

The solution with a Routine is maybe a little more complicated, but then
you can put more than 1 item in a database at the same time. I hope you can
do something with this and if you would like to know more about the Routine
solution let me know, then I'll post a little example of that one too.
 gr.
 Michael
 ------------------------------------------------------------------------

Date: Mon, 29 Dec 2008 16:44:02 -0800
From: efsubenovex@xxxxxxxxx
To: sc-users@xxxxxxxxxxxxxxxx
Subject: Re: [sc-users] Fill array with UGen output

Ah! Michael, a code snippet is worth a thousand nodes. Please do, and
thanks! Sounds great.


On Mon, Dec 29, 2008 at 4:19 AM, Michael Dzjaparidze
<m_dzjaparidze@xxxxxxxxxxx <mailto:m_dzjaparidze@xxxxxxxxxxx>> wrote:

   I have been working on the same thing bassically. I came up with 2
   solutions. 1 indeed by using OSCresponder and SendTrig, but
   actually the one I ended up using was to just use a control rate
   bus to send my Ugen data to and then I build a loop with a
   Routine that accesses the bus with the .getn message and stores
   the data in an Array with a counter that gets incremented each
   time through the loop.
       If you need more specific code, I can put up a short example.
       Good luck,
       gr.
       Michael



 ------------------------------------------------------------------------

   From: josh@xxxxxxxxxxxxxxxxx <mailto:josh@xxxxxxxxxxxxxxxxx>
   To: sc-users@xxxxxxxxxxxxxxxx <mailto:sc-users@xxxxxxxxxxxxxxxx>
   Subject: Re: [sc-users] Fill array with UGen output
   Date: Sun, 28 Dec 2008 20:38:24 -0800


   Take a look at OSCresponderNode and SendTrig. This would probably
   be the easiest way to do it (and access the values in the lang).

   Best,

   josh

   On Dec 28, 2008, at 5:49 PM, Schell wrote:

       Hi, I am wondering how to fill an array with the output of a
       control rate from a unit generator, possibly at pre-determined
       intervals [every 2nd, 3rd or 4th value]. Possibly a function
       that uses a ugen to return an array? I can't seem to achieve
       this on my own...

       --        Schell Scivally
       efsubenovex@xxxxxxxxx <mailto:efsubenovex@xxxxxxxxx>
       http://blog.efnx.com <http://blog.efnx.com/>


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   http://www.realizedsound.net/josh/


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efsubenovex@xxxxxxxxx <mailto:efsubenovex@xxxxxxxxx>
http://blog.efnx.com <http://blog.efnx.com/>

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