Filter
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The OSC determines the waveform and pitch,
which becomes the source of the sound. This is the heart
and soul of a synthesizer. On analog synthesizers,
it is called the VCO
(*1)
. The VCO is a sound generator
capable of changing frequency through changes in voltage.
Press
[
PRESET
]
Let’s examine the standard patch “PRESET D-8”.
Waveform Examples
Sawtooth Wave
Square Wave
Sine Wave
Very rich in harmonics. May be used to simulate the basis for many types of musical
instruments. Especially suitable for creating brass and stringed instruments sounds
(violin, piano, etc.)
Includes many odd numbered harmonics. Best suited as the sound basis
for woodwind and percussion instruments (clarinet, xylophone, etc.).
The most basic waveform. It does not possess any harmonics. It sounds
like a whistle.
Listen to the different sounds from each of the waveforms,
afterward returning the setting to the sawtooth wave.
After listening
to the sounds
each knob
creates, make
a habit of
returning the
knobs to its
center position.
Next, let’s go to the“FILTER”, where the sound is processed.
T his patch is using the sawtooth wave of the OSC1 (oscillator 1). Play the keyboard,
and hear the sound of this waveform. The sound at this stage is very simple
and expressionless. To hear how the sound changes with each step, play the keyboard
after each process.
F irst, determine the waveform to use
as the source of the sound. Play the keyboard
with your left hand while switching waveforms
with the [WAVE] button. Listen to the differences
in the sound of each waveform as you play
the keyboard.
N ext, let’s determine the pitch. Playing the keyboard with one hand while
turning [PITCH] and [DETUNE] knobs left and right gradually
with the other hand. Listen to the changes in pitches.
O n brass instruments such as a trumpet, the initial part of the blow
(attack) may be a little off pitch. Let’s recreate this time-varied change
in pitch. Move the [A], [R], and [DEPTH] sliders up and down gradually
and listen to the effects.
(*1) Voltage Controlled Oscillator
A
D
DEPTH
time
pitch
AD
DEPTH
time
pitch
Press
[
D
]
Press
[
8
]
Use these buttons
to select the waveform
These knobs specify the pitch
Falling, then return Rising, then return
ADSR affects the pitch, filter, and amp
of the envelope. Here are their names
and definitions.
DEPTH
(
-
)
D
A
DEPTH
(+)
A
D
Symbol
A
D
S
R
Attack Time
Decay Time
Sustain Level
Release Time
Time taken from zero to max
Time taken from max to sustain level
Level of Volume/Brightness
while key is held
Release Time taken from sustain
to zero after key is released
Name Pitch/Brightness/Volume
Envelope
The Function of Controls
1
4
Chapter
OSC
(
Oscillator
)
9 10
4
Chapter
The Function
of Controls