Doepfer

good 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 Wed, 11/26/08, yahoo@doepfer.de <yahoo@doepfer.de> wrote:

From: yahoo@doepfer.de <yahoo@doepfer.de>
Subject: AW: [Doepfer_a100] Re: starting a modular - Z3000 waveform quality?
To: Doepfer_a100@yahoogroups.com
Date: Wednesday, November 26, 2008, 11:39 AM






> I don't think anyone is advocating that VCOs should produce a
> "perfect" sine.
> Just simply a clean wave what has no audible buzz or distortion.
> That 's what defines a
> sine - just the fundamental component. Anything else is NOT A SINE WAVE.
>
> It seems either ignorant, sloppy or misleading for a manufacturer
> to intentionally make a
> buzzy wave and then spec it as "sine" wave. At the very least
> label it something more
> accurate like "buzzy wave beta testers like" ;-)

I'd recommend to read the information about a product. On our A-110 info
page it is clearly specified:

"The core of the A-110 is a sawtooth oscillator (in contrast to the A-111-1,
which is based on a triangle oscillator). The other waveforms are derived
from the sawtooth by internal waveform converters. As the sawtooth reset
(i.e. the back-to-zero slope) is not infinite fast but takes a little bit of
time the derived waveforms triangle and sine are not perfect ! At the top of
the waveform they have a small glitch or notch that is caused by the
sawtooth reset and cannot be eliminated by the waveform converters. The sine
is derived from the triangle by a simple diode-based converter and the sine
shape is not perfect (only a rounded triangle). If a perfect triangle is
required the A-111-1 is recommended. For a perfect sine the quadrature
LFO/VCO A-143-9 is recommended. "

We could enlarge the A-110 front panel from 10 to 20 HP for you to to have
this information also available at the front panel :-)

Best wishes
Dieter Doepfer

 














      

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