Is it really DC offset when the value goes from 0 to 1 instead of -1 to 1?

just to be clear and straightforward.

when the midpoint is not zero, there is a DC Offset, which means you introduce energy in the spectrum at 0Hz, so the maximum positive value must be equal to the absolute negative value (-0.5 to 05 , -0.25 to 0.25, etc). In the case the way phasor comes out of the box, midpoint is 0.5, and not zero...

cheers alex

On Mon, Mar 30, 2009 at 3:02 PM, Derek Holzer derek@umatic.nl wrote:

Is it really DC offset when the value goes from 0 to 1 instead of -1 to 1? I mean, that's the way [phasor~] comes right out of the box.

D.

Alexandre Porres wrote:

...

I tried again, and now it works much better than before... so I guess there was something wrong before.

Well Claude, it seems it almost works as the [triangle~] object.

Do you guys know about this one? It comes in some external library.

Were you who did it anyway Claude? :)

[triangle~] works in a similar fashion, it goes smoothly from inverse sawtooth to triangle and the sawtooth depending on the parameter (from 0 to 1).

The thing is that Triangle corrects the DC Offset, which could easily be done in the expr. But now I may start to sound like an obssessed DC Offset maniac.

Cheers Alex

On Mon, Mar 30, 2009 at 1:25 PM, Claude Heiland-Allen < claudiusmaximus@goto10.org mailto:claudiusmaximus@goto10.org> wrote:

Alexandre Porres wrote:

   On Mon, Mar 30, 2009 at 12:02 PM, Claude Heiland-Allen <
   claudiusmaximus@goto10.org <mailto:claudiusmaximus@goto10.org>>
   wrote:


       [phasor~]                               [r~ shape]
       [expr~ if($v1<$v2,$v1/$v2,(1-$v1)/(1-$v2))]


   I tried that, but it didnt actually worked, I just get actual
   sawtooths, and
   no real triangles.

Sorry for the shortness/lack of explanation, 0<shape<1, where 1 for phasor, 0.5 for triangle, 0 for backwards phasor.

considering shape as a constant, obviously you get weird results if you modulate it, but that's half the fun:

0.0 <= input <= shape ~> 0.0 <= output <= 1.0 (rising ramp) shape <= input <= 1.0 ~> 1.0 >= output >= 0.0 (falling ramp)

Hope this helps,

Claude -- http://claudiusmaximus.goto10.org

-- Alexandre Torres Porres cel. (11)8179-6226 Website: http://porres.googlepages.com/home http://www.myspace.com/alexandretorresporres

-- ::: derek holzer ::: http://blog.myspace.com/macumbista ::: http://www.vimeo.com/macumbista ::: ---Oblique Strategy # 35: "Consider transitions"