Studiologic Sledge 2.0 Manual - Manuale (Pagina 42)

SLEDGE by Studiologic® 42
Oscillator 1
Octave: the range is from 64’ to 1’ (7 octaves); please note
that the standard range for a piano is 8’ and this means that,
by setting the related control to the middle position, any key
played on the keyboard will play with the same frequency of
a standard piano (the Sledge keyboard is from C2 to C7 while
the standard 88 notes piano range is from A0 to C8)
Semitone: it allows to change the basic semitone (+ and + 12
semitones = 2 octaves)
Wavetable: this unique function, allows to select a number of
waveforms of different kind and harmonic content, allowing
many different sounds normally not obtainable by the typi-
cal analogue waveforms. 66 different waveform are available
and a more complete description of their harmonic content
will be made available separately.
When a Wavetable is selected (by the Shape button) the re-
lated Potentiometer allows to continuosly modify the star-
ting point, allowing to obtain almost infinite nuances and
different harmonic contents. The same potentiometer (as it
is shown by the clear front panel labelling) is used to control
the Pulse Width, if a pulse shape is selected.
All other waveforms are typically associated to vintage analogue synthe-
sizers; note: the parameter doesn’t necessarily set only one waveform, but
sets a specific oscillator model that could produce a number of waveforms
depending on other settings. A good example for this behaviour is the
Pulse shape.
A Pulse waveform contains certain harmonic partials according to its width
and it is normally lacking all the harmonics multiple of its duty cicle: as an
example, a pulse having a duty cicle of 25% (1/4) will not have the 4th, 8ve,
16th, 32th harmonic etc. This waveform normally produces a hollow / me-
tallic sound. If the Pulse waveform is selected, the parameters Pulse width
and PWM (LFO section) are used to change the pulse width of the wave-
form. Furthermore, the modulation destinations PWM has a consequent
functionality, depending on which oscillator is set to Pulse.
• A Sawtooth wave has all the harmonics of the fundamental frequency in
descending magnitude
• The triangle mainly consists of the odd harmonics with very low magnitu-
des, while the Square wave has all odd harmonics (and it can be obtained
by also setting the Pulse width to 50%)
• Sine consists of the fundamental frequency only and consequently it has
no harmonics at all.
OSC1
OSC1
OCTAVE, SEMITONE, WAVETABLE, PULSE WITH, WAVEFORM