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narrow-scaled string voices. Even though this results in significant detuning, the human ear
seems to perceive instead an increase in ensemble effect.
A part of Dimensional Sound Modeling, Rodgers’ exclusive Digital Dynamic Wind emulates
these characteristics by modeling the behavior of pipe organ wind regulating devices and the
response of pipes to a slightly unsteady wind supply. Some independent ranks have their own
software reservoir, and each voice is programmed to respond to wind variations in the same way
its equivalent pipe rank or ranks would respond.
Wind Supply
Adjusting the behavior of the organ wind system is accomplished via the Wind Supply menu
item in the Pipe Modeling menu. Wind Supply operates much like pipe instruments. In the
Flexible position, the wind has a noticeable unsteadiness, or a slight sag of the initial pitch, in the
playing of rapid passages or large chords. The Normal position reduces this somewhat, and the
Fixed position makes the wind steady under all conditions. The position is saved when the organ
is turned off.
Adjusting Wind Supply
1. Press and hold the SET piston.
2. Turn the Select knob clockwise (right) to display the Pipe Modeling category.
3. Release SET.
4. Turn the Select knob to display the Wind Supply menu.
P i p e M o d e l i n g
W i n d S u p p l y
N o r m a l
5. Rotate the Alpha dial to select Flexible, Normal, or Fixed.
Random Detuning
One of the essential ingredients of a pipe organ ensemble arises from the small amount of pitch
deviation in each pipe. No matter how carefully an instrument is tuned, small changes in
temperature or humidity cause the pipes to drift slightly from their original pitches. Reed pipes
are especially prone to drift in tuning because of cyclic temperature variations.
The Random Detuning feature causes selected notes to receive a small amount of detuning. The
amount of detuning is chosen at random for each note of each voice. Some notes are not detuned
at all. The number of notes detuned and the maximum amount of detuning are selected for each
voice to mimic the behavior of an equivalent pipe set. For instance, reeds exhibit more pitch
error than flutes. Because the detuning is random, there is no degradation of the overall
temperament of the instrument and the amount of detuning is no more than one would experience
in a recently tuned pipe instrument.
