Chippmann Omega-PhiCS-8 Series, Руководство пользователя

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CS-8 Series Omega-Phi Rev1.04, Oct. 2015
-2-
PREFACE
First of all, congratulations on the purchase of this 3U euro rack sy nthesizer
module. This manual contains a condensed description of the functionality
and addresses users with a certain level of elementary technical knowledge.
The current Thru-Zero
2
࣓ െ
ࢾ࣐
ࢾ࢚
high performance VCO Omega-Phi of the
CS-8 series is a so-called
thru zero
oscillator (to the power of 2
☺
). Oscillators of
this type are able to reverse their curve over time from any point, if the linear
FM control voltage goes thru zero into negative voltages. The oscillators'
frequency will rise again by further increasing negative voltages but it has
reversed its curve from anywhere at the zero point of frequency.
A typical oscillator is forced to continue its curve to the very end
(maximum/minimum) before it can change its direction. It will also stop at zero
or negative voltages, which cannot be processed, that it will inevitably
continue its originally direction to the very end.
With that "little" technical difference for
Thru zero oscillators are arising
extremely significant properties! For typical oscillators, namely, harmonic
relationships will vary with changing modulation depths (Index). I.e., although
the ratio of the carrier frequency (modulated oscillator) and the modulation
frequency (modulating oscillator) could be in whole numbers, even harmonic,
the modulation result will be totally disharmonic starting with that point from
where the linear FM voltage goes under zero. Only for specific singular indices
the result becomes harmonic, for all other indices it's chaotic. A ty pical
harmonic percussion sound, well-known from digital FM-Synthesizers, where
the index is modulated from very high to low, is absolutely impossible for
typical oscillators. This
ONLY works with a Thru zero oscillator!
The ultimate feature of the
Omega-Phi is the capability of an additional true
phase-modulation section. It is connected downstream to the oscillator core
and it is very similar to the sound aesthetic of the frequency modulation, when
using two sine-wave oscillators even identical! Because of the downstream
architecture the possibility of simultaneously processing sound synthesis
arises to create PM sounds (Phi section) and having at the same time clean
standard waves at the core outputs (Omega section) for other synthesis. But of