52
Getting Started
●

Mixing & The Modifiers

Referring to the block diagram of the harmonic enhancer, above, we can see that it

employs a modulation approach to building new harmonic structures. The carrier and

modulator blocks have independent display pages and some independent parameters.

■
The Modulator Parameter Page
■
The Carrier Parameter Page
NOTES ■ If you want to experiment with the Harmonic Enhancer parameters
while reading this section, they can be accessed by selecting the EDIT mode
and, from the initial EDIT mode display (try pressing
]
if the initial EDIT
display doesn't appear), pressing
™
(“
E1
”) to select the Element 1 parameters,
then pressing
£
(“
Modi
”) to select the Modifier parameters, and finally moving
the cursor to “
1:Harmonic Enhancer
” and pressing
[
. Once the
Harmonic Enhancer display is selected the carrier and modulator pages are
selected via
¡
(“
Crr
”) and
™
(“
Mod
”), respectively.

The “Signal Select” parameters in these pages allow independent selection of

the six different signal sources listed below.

This is the total output of the instrument model: a mix of the driver,
pipe/string, and tap signals.
This signal represents the instantaneous amplitude of the breath noise
produced at the driver. It is basically a highly distortion version of the
Slit/Friction signal described below.
When the pressures on either side of an aperture (e.g. a mouthpiece/
reed assembly) differ, a corresponding flow of air is produced. There is,
however, a limit to the speed of the airflow which can be produced
(saturation). The relationship between the pressure difference and
resulting airflow is derived as the Flow Rate Saturation signal.
The beat signal represents contact between the vibrating reed and the
mouthpiece.
As the reed vibrates, the area of gap (slit) between it and the mouth-
piece varies accordingly. The Slit/Friction signal corresponds to the
varying area of the reed/mouthpiece slit.
This signal is derived directly from the flexing of the reed.
Normal
Breath Noise
Amplitude
Flow Rate
Saturation
Beat
Slit/Friction
Reed