Owner’s manual, Adjusting, Filter – Peterson Sonuus Wahoo User Manual
Page 14
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Wahoo
Owner’s Manual
unaffected by the Wahoo filters. 100 (wet) means only the filtered sound is present in the output.
This parameter be used to retain some of the sonic character of the original instrument sound. For
example, for bass envelope filtering it is common to retain some dry signal to ensure the initial attack
of notes is retained.
LEVEL
output (out).
Typically you adjust the output level so there is a good balance between the
original sound (when the effect is bypassed) and the effected sound. It is possible to increase the
output level to boost the signal beyond the level of the original instrument level which can be useful,
for example, to overdrive the input stage of a valve amplifier. Note that at high output settings, the
output stage will start to soft-saturate. This lets you achieve louder sounds without worrying about
unpleasant clipping, regardless of how hard you play.
LEVEL
output (thr).
Some presets, depending on the resonant filter setup (see the next section for
a discussion on filters), have an audible output with no input signal. If you want to remove this, you
can do so by adjusting the output threshold,
thr, sub-parameter until the sound disappears. The
threshold sub-parameter acts like a noise gate by moving the filter cutoff frequency to a lower-than-
audible frequency when the input level is below the threshold you set. Because this is not a true
noise gate, you may hear a frequency sweep as the frequency moves when the signal level falls to
below the threshold you set. Note that gate attack is a global setting (see “Custom settings” on
page 27).
Adjusting
FILTER
All of the filter parameters apply individually to each of the two filters. You can select the parameter
to edit, then switch between filter 1 and filter 2, or you can select a filter and then cycle through all
the parameters for that filter, or you can do a combination of these—the order in which you edit is
flexible.
Parameter
Sub-parameter
Range
Description
Q-hi
0–100
Q of the filter at
freq-hi.
Q-lo
0–100
Q of the filter at
freq-lo.
freq-hi
10–4·00
Cutoff frequency of the filter in Hz (kHz).
freq-lo
10–4·00
Cutoff frequency of the filter in Hz (kHz).
shape
Cur
Lo9–Lo1,
Lin,
hi1–hi9
Curve: controls how the filter cutoff control is mapped
onto the filter’s cutoff frequency.
Shp
Lo
bnd
Filter type:
low-pass
band-pass