4.
1
How
a
program
is
organized
The programs of the Prophecy are organized as follows.
___...... Audto Signal
----
•
Control
Signal
• OSC (Oscillator) section
The Oscillator section creates the waveform, which is the most basic element determining the sound.
Oscillator 1
Oscillator 2
Seven types of tone generation (oscillator
types*
1)
are provided. You can select a combination of
two
oscillator types (an Oscillator
Set*
2),
and
make settings that specify the basic pitch
and
other aspects of
the oscillator.
Sub
Oscillator
You can select one of 4 basic waveforms,
and
specify its pitch as an interval of semitones or cents from
the basic pitch. The same pitch modulation effect that applies to the Oscillator will
be
applied to the Sub
Oscillator. In
the
Mixer section, the
signal
of
the
Sub
Oscillator
is
mixed
with
the
signals
from
Oscillators 1
and
2.
Noise Generator
This generates white noise. The signal from the Noise Generator is mixed
by
the Mixer section, in the
same
way
as the Sub Oscillator signal.
The
OSC section also contains a pitch envelope generator (Pitch
EG)
used
to control the pitch.
• Wave Shape section
The Wave Shape section uses a non-linear table to modify the waveform. The signals from Oscillators 1
and
2 are
routed
through
the Wave Shape section, allowing you to
apply
effects such as clipping or
resonance to the signals.
23
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