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And again adjust [DATA ENTRY] to hear the results of
different frequency ratios as you play
Leave Operator 2 set to a frequency ratio of 2.00
The sound you now hear will
be simitar to that of a square
wave in a conventional synthe-
sizer. In this case, it is created
by sine wave modulation of
the carrier by another sine
wave at twice the frequency,
and at a somewhat lower level
than the carrier.
This is the
modulator
which creates
the harmonics
7. To compare what the sound is like with and without
modulation, you don't have to turn down the output
level of operator 2; you can simply turn it off. Press
[OPERATOR ON/OFF 2] to turn off the modulator,
play a few notes, then press the button again to turn
the modulation back on.
And see the display change from this
Note that the current operator has
automatically switched to OP1;
remember it can only be set to an
operator that is on.
And see the
display change
to this
Note the current operator stays at
OP1. If you again want to adjust
any parameters for Operator 2, you
will have to press the [OPERATOR
SELECT] button.
8. Now lets see what happens when we leave the modu-
lator (Operator 2) set at a frequency ratio of 2.00, and
change the frequency ratio of the carrier (Operator 1).
Since the current operator automatically switched to
OP1 when you turned off OP 2 above, you can just
press the [OSCILLATOR-FREQUENCY COARSE]
button and play a note while slowly adjusting [DATA
ENTRY].
Then move [DATA ENTRY] while playing a note (or
several)
Listen and watch the display as the ratio changes from
a minimum of 0.50 to a maximum of 31.00
In this case, the effect you get
as you move [DATA ENTRY] is
similar to sweeping a high
pass filter in an analog synthe-
sizer. You're not moving a
filter, of course, but instead
you are controlling the entire
harmonic structure of the note
by changing the carrier fre-
quency relative to a particular
modulator frequency.
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