[sdiy] ASM-1 LFO q

[harry]

Jaco Sloof wrote:

> 4069 inverters? seems like a nice digital solution for
> producing the square wave...
>
> schematic online?
> digitally controlleable?
>
> im getting a picture in my head of an LFO module with
> 3 7seqment led displays, and two push buttons to
> increase/decrease the frequency... (in .1 Hz?)
> with slide ofcourse, to prevent the audible glitch in frequency...
> and with multi wave out (sqr/tri/saw/sin)
> and <fill in wacko idea>
> and <fill in wacko idea>
> and <fill in wacko idea>

Keep it up and you will be called wackoJaco....

If you are going with LFO programmed in steps... maybe use those
little thumbwheel switches with the buttons to increment them... then you

can ditch the seven segment readouts.

LFO by pushbuttons might not be that easy to play... give a lot of
thought to the
man-machine interface.

I made a mixer with thumbwheel switches... there were four of them
(decimal...
10 positions)... that selected waveforms... they were then mixed two at a
time...
with a final crossfading mixer. In use, you set one pair of waves (before
you play) then crossfade to the second sound.

But using the thumbwheels in live performance... is terrible. Lets see I
want a
<clickity> saw <clickity> triangle <clickity> square <clickity> sine
<clickity>
ahhh yes.... suboctave !   Too slow and clumsy...

It might be fun to try a rotary encoder... you could move it fast for big
steps... slow
for fine resolution...

just some more wacko ideas to get yer juices flowing  ;^)

H^) harry

>
>
> or am i being an over-enthusiastic novice now? 8-}
>
> --- Scott Gravenhorst <music.maker at gte.net> wrote:
> > I've cloned the LFO, both as-is and using 4069 inverters
> > instead of opamps.  I get both square and tri from both
> > designs.  If you get square, I can't imagine how you
> > would not be seeing the tri.
> >
> > Jaco Sloof <jacosloof at yahoo.com> wrote:
> > >That would be proppellorheads/steinberg right?
> > >
> > >Well, you got to admit, Reason is a pretty neat package, complete
> > >with afterswinging patch-cords when you turn around the rack, but
> > it
> > >doesnt compare to the real work... i think... (havent yet
> > completed
> > >my asm-1 yet)
> > >
> > >but anywayz... anybody else built an asm-1 here?
> > >
> > >i need some advice on the LFO...
> > >
> > >The square wave out is fine and dandy, but i cant seem to get the
> > >triangle wave to work...
> > >
> > >(minor detail, outputs are "patched"(crocodile clips) dirctly to a
> > >speaker...)
> > >
> > >i wasnt feeling good about putting the output on my soundcard line
> > >in, to use with winscope, maybe too much voltage...
> > >
> > >anybody can throw me a rope here, thanx
> > >
> > >CJ Wacko Jacko
> > >
> > >
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