Roland FP-5 用户手册
15
Chapter 1 Playing the Keyboard
Simulating the Creation of Organ Tones
(Tone Wheel Mode)
When any of the “Tone Wheel” Tones is selected, you can perform in “Tone
Wheel mode,” in which the creation of organ sounds is simulated.
Wheel mode,” in which the creation of organ sounds is simulated.
An organ features nine “harmonic bars” that can be drawn in and out, and
by using the bars in different combinations of positions, a variety of
different tones can be created. Different “Feet” are assigned to each bar, with
the pitches of the sounds being determined by these “Feet.”
by using the bars in different combinations of positions, a variety of
different tones can be created. Different “Feet” are assigned to each bar, with
the pitches of the sounds being determined by these “Feet.”
You can simulate the creation of tones using the harmonic bars by assigning
footages to the Tone buttons.
footages to the Tone buttons.
In Tone Wheel mode, the footages are switched by pressing the [Tone
Wheel] button, and a total of nine footages and percussion instruments are
assigned to the Tone buttons other than [Piano] button.
Wheel] button, and a total of nine footages and percussion instruments are
assigned to the Tone buttons other than [Piano] button.
On tone wheel organs, in the high range of the keyboard, high-pitched feet
are “wrapped around” one octave down.
Folding back the high-frequency portion prevents the high-frequency
sounds from being unpleasantly shrill, and folding back the low-frequency
portion prevents the sound from becoming “muddy.”
are “wrapped around” one octave down.
Folding back the high-frequency portion prevents the high-frequency
sounds from being unpleasantly shrill, and folding back the low-frequency
portion prevents the sound from becoming “muddy.”
On the FP-5 faithfully simulates this characteristic.
NOTE
What Are “Feet?”
Feet basically refers to the lengths of pipe used in pipe organs. The
length of pipe used to produce the reference pitch (the fundamental) for
the keyboard is eight feet. Reducing the pipe to half its length produces
a pitch one octave higher; conversely, doubling the pipe length creates
a pitch one octave lower. Therefore, a pipe producing a pitch one octave
below that of the reference of 8’ (eight feet) would be 16’; for one octave
above the reference, the pipe would be 4’, and to take the pitch up yet
another octave it would be shortened to 2’.
length of pipe used to produce the reference pitch (the fundamental) for
the keyboard is eight feet. Reducing the pipe to half its length produces
a pitch one octave higher; conversely, doubling the pipe length creates
a pitch one octave lower. Therefore, a pipe producing a pitch one octave
below that of the reference of 8’ (eight feet) would be 16’; for one octave
above the reference, the pipe would be 4’, and to take the pitch up yet
another octave it would be shortened to 2’.
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