Paul,
Awesome! I am sure that many are looking forward to your design. Are
you considering making up a PC board for your design and selling it.
I see a lot of possibilities of a digital approach for LFVCOs. For
them, the exponential thing is not so important and time problems are not
important. For an LFO a microcomputer seems to make sense. Modulating
signals can be conconted from recipes of sawtooths, triangles, square
waves to produce really interesting modulations. A fast processor like
the 68HC12 could not only implement one or more LFO's, but a a few ASDR's,
control selecting and weighting of tone sources etc.
Again, I am looking forward to seeing your design, and I think that
more than a few may have an interest in building one.
Gene Z.
Paul Maddox wrote:
> Dear Chris/Gene
>
> I'm slightly confused about this VCDO thing... you're talking about.
> PLL's??
>
> I got a High speed VCO going, its stable, doesn't drift too much
> with temperature and runs at 128 times audio frequency (yes this
> sucker runs at upto 800KHZ!). the square wave out is then divided and
> it then drives my eprom (which has 127 waveforms, taken from the
> PPG2.2 eproms).
>
> I intend to try and draw it nice and neat and put it on my webpage
> in the next week or so...
>
> Hope this helps.
>
> Paul Maddox
>
> P.s. Its nice to be back and see familier faces/names.
>
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