Doepfer

Since one of the waves in my MiniWave has a sine, you'd think that could be used as a 
decent sine output. The trouble is every VCO produces a slightly different waveform. I can 
only calibrate the MiniWave for *one* VCO or LFO - if I patch another one, the sine is 
audibly distorted.

Because the Doepfer oscillators are NOT calibrated (P-P amplitude and DC offset) to 
exactly match each other, a quality sine converter will need to be calibrated to each 
specific triangle wave. Otherwise we're back to the annoying buzzy sines again...



--- In Doepfer_a100@yahoogroups.com, "Adam-V" <adam-v@...> wrote:
>
> I would have thought that, assuming the correct triangle amplitude was
> applied, it shouldn't matter what the source of the waveform was. I
> base this on a quick look at Tim's schematic and associate blurb and
> am happy to be corrected if I am wrong.
> 
> Cheers,
> Adam-V
> --- In Doepfer_a100@yahoogroups.com, "laryn91" <caymus91@> wrote:
> >
> > Sounds good in theory but the external tri-to-sine most probably not
> perform well. The 
> > converters will have calibrated by the user to *each* specific
> oscillator triangle wave 
> > patched in. I doubt most would bother pull out the module, hook up a
> scope trim the 
> > calibration pots every time they patch a new wave!
> > 
> > Making a tri-to-buzzy-sine external converter is more practical sine
> it requires NO 
> > calibration to make the conversion. This way you can get even get
> this buzzy wave with 
> > other vendors oscillators (Plan-B, Z0, ASys).
> > 
> > And it frees Doepfer to make higher quality oscillators without
> complaints from the small 
> > band who use this crappy "sine"  wave.
> > 
> > 
> > 
> > --- In Doepfer_a100@yahoogroups.com, "Adam-V" <adam-v@> wrote:
> > >
> > > The other bonus would be the ability to patch in oscillators other
> > > than the A110/111.
> > > 
> > > For those not wanting to add modules for this purpose perhaps both
> > > types of conversion could be offered on the oscillator board itself
> > > with a user selectable link to pre-set whichever version of sine is
> > > required? I wouldn't think it would add that much more to the cost of
> > > the module to do this would it?
> > > 
> > > Cheers,
> > > Adam-V
> > > 
> > > --- In Doepfer_a100@yahoogroups.com, Bakis Sirros
> > > <synth_freak_2000@> wrote:
> > > >
> > > > nice idea!
> > > > 
> > > > Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
> > > > [Doepfer_a100] group owner
> > > > www. parallel - worlds - music. com
> > > > www. myspace. com/ parallelworldsmusic
> > > > www. myspace. com/ interconnectedmusic
> > > > www. myspace. com/ memorygeist
> > > > www. DiN. org. uk
> > > > www. musicamaximamagnetica. com
> > > > www. shimarecords. co. uk
> > > > www. rubberrecords. gr
> > > > Athens - Greece
> > > > 
> > > > --- On Thu, 12/4/08, James Husted <ersatzplanet@> wrote:
> > > > 
> > > > From: James Husted <ersatzplanet@>
> > > > Subject: Re: AW: [Doepfer_a100] Re: Let me hear your bright new
> > > ideas for future Doepfer A100 module
> > > > To: Doepfer_a100@yahoogroups.com
> > > > Date: Thursday, December 4, 2008, 8:30 PM
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > This would be a good solution because I would imagine you can plug 
> > > > other waveforms than a triangle to get odd shaped waves for
> outputs. 
> > > > Would that work too?
> > > > -James
> > > > 
> > > > On Dec 4, 2008, at 12:55 AM, yahoo@doepfer. de wrote:
> > > > 
> > > > > > How about a basic triangle to sine wave shaper module? It
> could have
> > > > > > Triangle In, Original Triangle Out and the best possible
> Sine Out 
> > > > > that
> > > > > > can be achieved. You could even fit two of them onto a 4HP
> panel.
> > > > > >
> > > > > > Cheers,
> > > > > > Adam-V
> > > > >
> > > > > Good idea. This would not require to solder a module to
> install the
> > > > > modification. And every user could decide if he wants a better
> sine 
> > > > > or not.
> > > > > But it would be more expensive than the internal modifications 
> > > > > because it's
> > > > > mostly the mechanics (front panel, sockets, potentiometers and 
> > > > > knobs) that
> > > > > is responible for the price of a module. The internal
> modification 
> > > > > would be
> > > > > in the Euro 10-20 range, whereas the prise of the module version 
> > > > > would be at
> > > > > least in the Euro 50 range for a dual tri-to-sine converter.
> > > > >
> > > > > Best wishes
> > > > > Dieter Doepfer
> > > > >
> > > > >
> > > > > 
> > > > 
> > > > [Non-text portions of this message have been removed]
> > > > 
> > > >  
> > > > 
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> > > > 
> > > >       
> > > > 
> > > > [Non-text portions of this message have been removed]
> > > >
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> >
>