Re: [sc-users] ping-pong line

[Ricardo Guerreiro <rg@xxxxxxx>]

Thank You Fredrik!

Actually, I was thinking in a Line like this one:

Line.kr(x, y, z)

x = destination value

y = ramp time

z = send trig when ramp ends

with something like this, one could just put a TRand as the x value, and another for the y value, both triggered by z, and our Line would be always moving.

I think it's pretty "SuperColliderian" isn´t it?

I really need to use this in my Synths to control values. It's ridiculous having to receive this from Max/Msp via osc...

 

RG

Em 2006/05/16, às 01:45, Fredrik Olofsson escreveu:

hi Ricardo,

not quite sure i follow you.  values should be reflected back (folded) within bounds 0-100?  if so, here's an example demonstrating that.

s.boot;

(

SynthDef(\pptest, {|out= 0, freq, lagTime, i_lo, i_hi|

var pingpong;

pingpong= Fold.kr(Ramp.kr(freq, lagTime), i_lo, i_hi);//linear

//pingpong= Fold.kr(Lag.kr(freq, lagTime), i_lo, i_hi);//exp

Out.ar(out, SinOsc.ar(pingpong*#[1, 1.01], 0, 0.1));

}).send(s);

)

a= Synth(\pptest, [\freq, 400, \lagTime, 2, \i_lo, 400, \i_hi, 600]);

a.set(\freq, 900); //go from 400 to 900 but bounce back. fold range 400-600

a.set(\freq, 400, \lagTime, 5); //go back slower

a.free;

(

a= Synth(\pptest, [\freq, 0, \i_lo, 100, \i_hi, 233.333]); //new bounds

fork{

300.do{|i|

0.1.wait;

a.set(\freq, i*100, \lagTime, #[0.1, 0.01].wrapAt(i));

};

a.free;

})

On 16.05.2006, at 00:40, Ricardo Guerreiro wrote:

Hello,

I'm trying to do in SC something I've been already using in Max/Msp. That is a kind of ping-pong line wich has an infinite behaviour because it constantly redefines its starting value from its ending value; I mean, it starts again from the value where it ended before (always within predefined limits).

Ex. moving  from 0 tp 100:

 36 --»  85 --»  53 --» 21 --» 11 --» 79 (...)

I hope I wasn't too much confusing.

Any helps?

  #|

     fredrikolofsson.com     klippav.org     musicalfieldsforever.com

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