[sdiy] Update on my arpeggiator

[phillip m gallo]

Inquisitive, not argumentative, what would a spiral sound like?   Using the
case of Freq. Modulation, if i use a Low Freq. Saw to modulate pitch the
linear ramp and shear step are audible, if i then modulate with a LF Tri i
hear the pos/neg linear ramps, a LF sine produces it's "rounded" pitch
movement, and a Square  obviously steps the pitch.  At higher frequencies
these obvious correlations disappear to my ear but across frequency you can
mathematically predict a spectral result for this modulation that is not
intuitive from the audible effect of low freq. modulation case.

regards,
p

----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Tom Arnold
Sent: Friday, June 03, 2005 2:28 PM
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Update on my arpeggiator


On Fri, Jun 03, 2005 at 03:18:13PM -0600, Ian Fritz wrote:
> >I still say that those should be properly called Chaotic Waveforms
because
> >they
> > dont *sound* spiral.  To be fair, you call it chaotic on the webpage.
:-)
>
> And I still say you are wrong.  There are non-chaotic spiral waves that
are
> simple analogs of circular waves.  Your definition is bizarre.  A wave is
> defined by its mathematical, not musical or auditory, properties.

So we agree to disagree.  I say that for a waveform to be called Spiral or
Circular, it should impart that by its sound, and you go more by what it
looks like on a scope.  I expect that you are more correct from the aspect
of what people who care about the math behind it have called it, but I only
care what comes out the speakers. :-)


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