Basic Sound Parameters
20
DYN-TVF (Dynamic Time-Variant Filter)
Basically the same as
TVF
, but with an additional parameter called
Dyn
(touch the
Cutoff
tab to see this) which applies Cutoff modulation
from the audio-envelope of oscillator 2 (or from the inputs when oscillator 2 Type is
EXT IN
). See
ENV RING
in “
The Mod Section
” above!
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COMP (Compressor)
Compress Tom
Compression is the audio-engineer’s “secret weapon” used to manipulate several
attributes of pre-recorded sound. For instance, it can add punch to a drum...
Restore
512:INIT PATCH
, select
PCM
for oscillator 1, with Waveform
239
“
RockTom
Lo
”. Listen to this sound for a while, then go to
COSM1
and select
COMP
. Take both
Attack
and
Sustain
up to
70
and the
Output Level
down to
105
so that the
volume is about the same whether or not the compressor is active. Now compare the
original with the treated sound by repeatedly touching the
ON
button
. Note that
compression can also accentuate the ambient tail of a sound: Play a note and hold it...
The compressor in the
COSM
section is fairly simple (with only two main parameters -
Attack
and
Sustain
), but like all
COSM
algorithms, it is polyphonic. For a more typical and flexible
stereo compressor, see
MFX
number
09
(
Dynamic Processor
) in the
Effect
section.
3
2
1
1
2
3
TVF (Time-Variant Filter)
A variation on the standard filter you will find on any subtractive synthesizer, but with a
total of 12 different types:
LPF
Low Pass Filter. Removes frequencies above the Cutoff point.
BPF
Band Pass Filter. Removes frequencies above and below the Cutoff point.
HPF
High Pass Filter. Removes frequencies below the Cutoff point. 3 different slopes.
NOTCH
Often called Band Reject or Band Stop. Removes frequencies around the Cutoff point.
PEAK
Accentuates frequencies around the Cutoff point.
That was only five, but each of these types are available with different slopes (dB per
octave). For an easy example of what to do with a Lowpass filter, see the section
“
The Simplest of Patches
” above.
DUAL (Dual Filter)
Similar to the standard
TVF
(see below), but with two 12dB/octave filters, either in
parallel or in series. The filters can be routed in three different ways: parallel LowPass /
HighPass, serial LowPass
➝
HighPass, and parallel BandPass / BandPass.
