DOEPFER A-107 Podręcznik - Strona 14
Przeglądaj online lub pobierz pdf Podręcznik dla Systemy filtracji wody DOEPFER A-107. DOEPFER A-107 18 stron. System a - 100, multitype morphing filter
Drukuj stronęA-107
Multitype Morphing Filter
Morphing
But the real fun arises with the morphing features of
the A-107. Even here we recommend first to find out
the sound behaviour between two different filters as it
is a big difference to morph e.g. from 6dB LP => 24 dB
LP, or LP => HP, or BP => NF, or HP => AP and so on.
For this you may use the following system:
D Program a chain with two different filter types at
step 01 and 02.
D Patch the rectangle output of a LFO to the step CV2
input of the A-107 and adjust the frequency of the
LFO to about 1 Hz or less.
D Turn the manual step control, the attenuator of step
CV2 and the manual morph control to zero.
D Select the display mode STEP.
D Look at the display and turn up the attenuator
control of step CV2 slowly until the display shows
alternately 01 and 02.
D Feed the audio input of the A-107 with the desired
audio signal. The sawtooth output of a VCO is a
good start but even a complex audio signal is
suitable for the first tests
D Set the controls of the filter section to suitable
positions: full amplitude, medium filter frequency,
small or medium resonance
D Now you will hear alternatively the two filters that
were programmed to step 01 und 02 of the chain
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System A - 100
(see first item above),
D Turn up slowly the morph control to find out how the
switching between the two filters turns more and
more into morphing.
D Alter the setting of the filter section (filter frequency,
resonance, amplitude) to hear the effect of these
controls
D Increase the LFO frequency that controls the step
CV. From a certain LFO frequency (depends upon
the setting of the morphing time) the filters of step
01 and 02 will not be reached as the morphing time
is longer than the LFO period. Instead of this one
obtains an "interim" filter that has a bit of both filters
D Use other control voltage sources (e.g. LFO,
ADSR, Random CV) to control the parameters of
the A-107 by external voltages: morphing time, filter
frequency, filter resonance, amplitude
D Extend the filter chain by adding filters to step 03,
04, 05 ... and try different filter types in the chain
Now you should experiment with a real filter chain (so
far only two filters were used) and try more sophistica-
ted controls:
D Extend the filter chain by adding new filters to step
03, 04, 05 ... and try different filter types in the
chain. You may also use the factory setting of the
chains (step 1 = filter 2, step 2 = filter 2 ...)
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