The Filter; Vcf - Schippmann ebbe und flut User Manual

10.2 The filter

10.2.1 VCF 1

1.
Play a low note on your synthesizer (e.g. C1 at 65 Hz). Since 'ebbe und flut' is still in bypass mode,
you should now adjust the levels on your synth.
2.
Switch from bypass- to ON-mode. There should be no sound at all, because VCF 1 is entirely clo-
sed and the current setting only allows audition via VCF 1.
3.
Move the [frequency]-knob (7) slowly clockwise. The filter opens and the sawtooth sound be-
comes audible and more and more brilliant.
4.
Move the [frequency]-knob (7) between both extreme positions and move the [resonance]-
knob (8) at the same time slowly clockwise. The quality of the filter increases and the frequen-
cies of the audio signal, equal to the filter-cutoff, become emphased. In 1 o'clock position, the
resonance becomes very high, upon 2 o'clock the filter starts to self-oscillate.
5.
Select consecutively all 12 different positions of the [curve]-rotary-switch (16) by moving it
clockwise. Repeat the game with frequency and resonance, described above in step 4, until you
have listened to all filter functions.
Please note: Move the [curve]-rotary-switch as quickly as possible from position to position, in
order to avoid signal dropouts.
10.2.2 VCF 2
6.
Now move the [balance]-knob (41) in fully clockwise position. Initially there is no audible signal,
since VCF 2 is entirely closed.
7.
Turn slowly the [frequency]-knob (28) clockwise. The filter opens and the signal gets more and
more brilliant again.
8.
Move the [frequency]-knob (28) between both extreme positions and move the [resonance]-
knob (29) at the same time slowly clockwise. The quality of the filter again increases and the
emphasis of the frequencies, contained in the signal, behaves the same way as above. In
1 o'clock position, resonance is very high again and upon 2 o'clock, the filter starts to self-oscilla-
te.
9.
Select consecutively all 12 different positions of the [curve]-rotary-switch (37) by moving it
clockwise. Repeat the game with frequency and resonance, describes above in step 8, until you
have listened to all filter functions.
user manual e b b e f l u t
u n d
l
58