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Performing
Simulating the Way that Sounds are Created on an Organ
(Tone Wheel)
The FP-7 lets you create your own original organ sounds.
Of the Tone buttons, the tones assigned to the [TW Organ] (Tone Wheel Organ) button
simulate the way in which sounds are created on a tonewheel organ.
On a tonewheel organ, you can create original sounds by sliding nine harmonic bars
(drawbars) forward or backward to change their relative balance. Each bar is assigned
a different footage, and this footage determines the pitch of the sound.
8' is the footage that forms the basic pitch of the sound; this is the center around which
you create the tone.
Each harmonic bar is assigned a sine wave (a pure pitch without overtones) of a different
pitch, and by combining these pitches you can create a wide range of sounds.
8' volume: 8
4' volume: 5
You can simulate the creation of tones using the harmonic bars by assigning footages to
the Tone buttons.
The FP-7 provides two screens for this purpose: the "Tonewheel Organ screen" and the
"TW Edit (Tone Wheel Edit) screen." Graphics indicating the state of the harmonic bars
are shown in these screens.
You can switch between these two screens by holding down the [Display] button and
using the [-] [+] buttons.
The Tonewheel Organ Screen
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Time
Time
TW Edit (Tone Wheel edit) Screen
Time
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