Specifications

Chapter 2: Aural Exciter Controls 7
would lose some presence. When the Null Fill
control is set at Max, the frequency dip is filled,
but the frequencies associated with the shelf top
become accentuated. Also notice the shift in the
Tune frequency (0 dB axis) for the range of Null
Fill settings.
Harmonics Control
The Harmonics control adjusts the amount of
harmonics being generated, which is displayed
as a percentage underneath the controls.
The harmonic generator produces harmonic
components according to a complex set of laws,
including considerations for transient and
steady-state qualities, as well as relative ampli-
tude of the original audio signal.
As you move the control up, harmonic content
increases proportionally as it works in conjunc-
tion with the Timbre control. Moreover, the
amount of harmonics generated is dependent
on the input level. The gain of the harmonics
automatically increases as the input level in-
creases.
The generated harmonics are not products of
harmonic distortion, since they are intelligently
produced and formed into a power envelope
that enhances rather than distorts the final au-
dio signal.
Timbre Control
The Timbre control sets the order or type of har-
monic signal being generated by way of the Har-
monics control. The control can be varied from
all Even harmonics in the Min position, to all
Odd harmonics at the Max position. Odd order
harmonics will sound softer to your ear, while
even harmonics will sound harsher.
Varying the Timbre control between the two ex-
tremes will provide you with a mix of both Even
and Odd harmonics in proportion to the control
position. To emphasize the effect of the Timbre
control, set the Density switch to High.
The display underneath the controls reads from
+100% (all Odd) to –100% (all Even).
Mix Control
The Mix control determines the amount of Au-
ral Exciter enhancement mixed into the original
signal. The control ranges from Min (no en-
hancement), up to Max, representing approxi-
mately a 6 dB boost when the Drive switch is set
to Normal, and approximately an 18 dB boost
when it is set to High.
Underneath the controls, the amount of en-
hancement mixed into the original signal is dis-
played as a percentage.
Figure 5. Null Fill control
TYPE III NULL FILLRANGE
RESPONSE (dB)
FREQUENCY (Hz)
7.0
5.0
3.0
1.0
-1.0
20.0 100.0 1000.0 10000.0
PEAKING at midpoint
for all curves
NULL FILL at MAX
NULL FILL at
Midpoint
NULL FILL at MIN