Basic Sound Parameters
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SPEAKER (Speaker Emulation)
The only parameter here is the
Speaker Type
control, which selects one of 12 preset
equalization settings which mimic the frequency response of different speaker cabinet
models. Particularly useful for guitar sounds in combination with
Amplifier Emulation
(see above).
RESONATOR (Hollow-body Emulation)
This
COSM
algorithm is actually a formant filter. To get an idea of how much this effect
can color a sound, recall
512:INIT PATCH
, select the
PCM
type for oscillator 1 and
change the waveform to number
158
“
Nylon Gt Hi
”. Go to the
OSC TVA
, flip
Sustain
to minimum and
Decay
to around
70
. Select
COSM1 Type RESONATOR
, touch
the
Size
tab and change the value of Size to
110
. Touch the Balance tab
and
take Balance up to maximum (
100
). Now return to the
COSM Type
page and try out
the 3 different Filter Types
. Compare them with no effect at all by touching the pad
labeled ON
. Of course different values for Size are more suited to particular Filter
Types, and you can make these effects more subtle by turning Balance down a little.
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1
SBF1 (SideBand Filter 1)
Karplus 1
Very useful for adding/subtracting frequencies from drum sounds. Although called filters,
this and the following two
COSM
algorithms are actually based on extremely short delays,
and can therefore be used for “Karplus-Strong” physical modeling of plucked strings...
Start from
512:INIT PATCH
and select
NOISE
for oscillator 1. Touch the
OSC TVA
tab
and take
Sustain
down to minimum. You will hear a very short burst of noise. Go to
COSM1
and select
SBF1
. You should now be able to hear a quiet and short plucked string sound.
Touch the
Width
tab
and take the Width value down to
2
- this makes the decay longer
but also makes it much quieter. Go back to
OSC1
/
OSC Type
and take
Wave Gain
up to
maximum (
+12
) to give the filter more impulse to work with. Note that the filter frequency
is directly linked to oscillator 1 pitch (try turning the
PITCH
knob in the
OSC1
section) and
that it can be finely adjusted with the
DETUNE
knob in the
COSM1
section.
Because the sound is still too quiet (and a little too harsh at the top), Touch the
Effect
pad
, then the
MFX
tab
and change the Multi Effects algorithm to number
01
,
Parametric EQ
. Take
TOTAL Gain
up to maximum (
+15
)
and remove some of
the high frequencies by setting
HIGH
to minimum (
-15
) .
It’s
well
worth
experimenting with all the Frequency,
Gain
and
Q
values while you are here. Especially
removing some frequencies around
5000 Hz
makes the sound much warmer
. Also,
try turning oscillator 1’s
PW
knob down just a little! Save your sound to program number
302
under the name “
Karplus 1
”.
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