Roland SH-101 Owner's Manual page 26

26
SOURCE MIXER
VCF
{Voltage Controlled Fiiter)
The SOURCE MIXER mixes the VCO
{MJ or 1 }, SUB Oscillator, and Noise in
various proportions, before sending them
to the VCF.
SOURCE MIXER
G@) MJ Level knob
@ A Level knob
@) SUB Oscillator level knob
The VCF is used to alter the tone color of
the SOURCE MIXER output by cutting or
boosting harmonics in that sound. The
VCF is a LOW PASS filter which passes
VCF
NOISE
8
ice aR
PLM LELE
WILT
@ SUB Oscillator Waveform selector
switch
This selects the pitch range and the
waveform of the SUB Oscillator.
©) Noise Level knob
low frequencies and blocks high frequen-
cies, and the Cutoff Point is controlled by
the voltage.
VCA
©) FREO ¢ Cutoff Frequency knob
This knob determines the Cutoff Point of
the VCF. In its highest position, the sound
will pass unchanged. As you lower the
knob, the frequencies in the higher pitch
range will be cut, thereby the sound fades
out in its Jowest position.
@) RES « Resonance knob
This knob is to emphasize the frequency at
the point set with the Cutoff Frequency
. AS you raise the knob, certain harmon-
ics are boosted and sound will be more
unusual, more electronic in nature. If set-
ting the Resonance knob to the high posi-
tion and move the Cutoff Frequency knob,
you can obtain a type of sound that is
impossible to be produced by any other
musica! instrument. At its highest level,
self-oscillation will begin {at the Cutoff
Point).
ENV e ENV Depth knob
When Cutoff Point of the VCF is control-
led by the output signal from the Envelope
Generator, this knob adjusts the depth of
the modulation. You can change the Cut-
off Point of the VCF in each note with the
ADSR pattern previously set. So the tone
color of each note can be changed quite
drastically.
@) MOD Modulation Depth knob
When the Cutoff Point of the VCF is
controlled by the output signal from the
Modulator, this knob is used to adjust the
intensity of the modulation. How it works
varies depending on the waveform of the
Modulator.