User Manual

Wahoo © Copyright 2016 Sonuus Limited 25
Owner’s Manual
The pitch mode can be set to either pitch-track or pitch-bend using the tyP sub-parameter. These
innovative effects use sonuus’ unique, highly acclaimed, pitch detection and tracking technology.
Pitch-track (trA). In pitch-track mode, the cutoff frequency of the Wahoo filter is set to follow the
pitch of the notes that you play. There are three parameters that control how this happens. The pitch
tracking can be offset from the pitch of the notes you play by adjusting the FrE frequency sub-
parameter— a positive number can move the filter frequency higher by up to 4 octaves; a negative
number can move the filter frequency lower by up to 4 octaves. The other two parameters that
control the pitch tracking are freq-hi and freq-lo in the filter set-up. The pitch tracking frequency is
limited to always be between freq-hi and freq-lo. You can picture pitch tracking as a filter that moves
with the pitch of your notes within frequency limits you define ( just like when a synthesizer’s filter is
set to “keytrack” mode). It allows you to create interesting tonal effects, including synth-like sounds,
for example by configuring a low-pass filter to remove the harmonics of your instrument’s signal to
leave only the fundamental tone. The tracking will only follow your playing exactly when the curve
sub-parameter of the filter ShP parameter is set to linear (Lin). If one of the other setting is selected
(Lo9–hi9), you will change the point at which the filter follows your playing. Although this will be less
predictable, you can create some nice effects like this.
Pitch-bend (bEn). In pitch-bend mode, when you bend a note, the cutoff frequency of the filter
moves. You set how much of a bend should map onto the maximum cutoff control—this is set in
semitones via the S.tn sub-parameter and can be between 1 and 36 semitones. Obviously, the larger
values are not applicable to note-bending with your fingers; they apply to bending using a whammy/
tremolo bar. The extremes of the pitch-bend are then mapped to the values of freq-lo and freq-hi:
the limits you have set for the filter cutoff frequency. The reference point of the bend is set by the rEF
sub-parameter. The reference point is the filter cutoff frequency before you apply a bend. For
example, if the reference is bottom, then the filter cutoff is at freq-lo before you bend. Bending up by
S.tn causes the filter cutoff to increase to freq-hi. The effect of different reference points is shown
in the diagram below.
rEF bot
Ctr
toP
Pitch bend reference: defines whether the starting point of
a bend is (only available if tyP is bEn):
bottom
centre
top
FrE −99–99
Frequency: pitch tracking frequency offset (tone).
(Only available if tyP is trA)
Top Tip: Pitch tracking is monophonic (it can only track single notes) but you can still
play chords in pitch mode: the Wahoo will track the dominant note. For best
control of the effect in pitch mode, play single notes clearly.
Pitch sub-
parameter
Range Description