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Selecting and Playing Sounds
 
Selecting and Playing Sounds
What’s the feet?
“Feet” is a term that began as a measurement of the length of the pipes 
in a pipe organ.
The pipes that produce the basic pitch (fundamental) for each note are 
considered to be “8 feet” in length.
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'.
The pitches of the harmonic bars are related as follows.
On tonewheel organs, the high-pitched footage for a portion of the high 
range, and the low-pitched footage for a portion of the low range are 
“folded-back” in units of one octave. 
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 ATELIER faithfully simulates this characteristic.
16'
8'
4'
2'
1'
5
1
/
3
'
2
2
/
3
'
1
3
/
5
'
1
1
/
3
'
one octave
below
5th
root
8th
12th
15th
17th
19th
22nd
8' =
When the middle C (C4) note is pressed, each
harmonic bar will sound the following notes.
AT-75_e.book 29 ページ 2008年8月21日 木曜日 午前10時9分