[sdiy] Additive Synthesis - phase shifts important??

[cheater cheater]

Hmm... then how do you call removing the negative half of the signal?

I think it's rectification. :P

Cheers
D.

On 7/15/08, harrybissell at wowway.com <harrybissell at wowway.com> wrote:
> Rectifying a square (or pulse)wave gives you DC...  ;^P
>
>  H^) harry
>
>
>
>
>  On Mon, 14 Jul 2008 16:11:06 +0100, cheater cheater wrote
>
> > I'm pretty sure that even a constant phase-shift will give you a
>  > noticable change in the timbre.
>  >
>  > But even then, consider the fact that the signal will overdrive
>  > differently. Just put a square wave through a rectifier - you still
>  > get a square wave. If you put the square wave shifted by Pi/2 (so an
>  > 'arc sin wave') you will get something very different, that would
>  > look more like an exponentialized trapezoid wave.
>  >
>  > Cheers
>  >
>  > On 7/14/08, Florian E. Teply <usenet at teply.info> wrote:
>  > > Jim Patchell schrieb:
>  > >
>  > > > Your ear cannot tell what the phase relationships between various
>  > > harmonics...however, your ear is very sensitive to a "change" in the phase
>  > > relationship.  Being able to dynamically change the phases as a function of
>  > > time would rate very important to me...(not sure if I am going to add that
>  > > capability to my additive synthesis project or not...).
>  > > >
>  > > >
>  > >  Well, it's not that big a step from user-controlled constant phase shift to
>  > > user-controlled variable phase shifts, in the DDS sheme it would break down
>  > > to adding external data instead of internal (to the DDS module) data, so
>  > > simply connecting some more wires to the outside instead of generating that
>  > > data on-module from knob positions, CVs or whatever.
>  > >
>  > >  Will probably generate some graphics on the general idea as soon as my last
>  > > exam is finished (thesis is due next monday)...
>  > >
>  > >
>  > >  Greetings,
>  > >  Florian
>  > >  _______________________________________________
>  > >  Synth-diy mailing list
>  > >  Synth-diy at dropmix.xs4all.nl
>  > >  http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>  > >
>  > _______________________________________________
>  > Synth-diy mailing list
>  > Synth-diy at dropmix.xs4all.nl
>  > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
>
>
> Harry Bissell & Nora Abdullah 4eva
>
>