Temperament - Viscount Cantorum Duo Plus Reference Manual

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Overwriting pin-protected
combinations are you sure?
Song load failed
Can't read file's properties
Song load failed
The MIDI file is too big
Song load failed
Can't open the MIDI file
Song load failed
Can't read the MIDI file
Song load failed
The MIDI file is corrupted
Songlist load failed
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Songlist load failed
Can't read songs' number
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Empty songlist
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Temperament

Tuning a fixed intonation instrument (e.g. organs) consists of creating a chain of twelve fifths, properly crafted so
that at the extremes the interval can be reduced, through division or multiplication, to a perfect octave. A perfect
fifth is achieved when two sounds have a frequency ratio of 3:2. If from any sound we calculate twelve ascending
perfect fifths, the sound obtained is (3/2)
If we compare these values we find that (3/2)
12
find that: (3/2)
=129,7463 , while 2
comma. It can be defined as the surplus of twelve perfect fifth compared to seven octaves, both starting from the
same sound.
The picture is not in scale (otherwise the comma would be almost invisible) but it gives a graphical understanding
of the problem. Now, dividing the Pythagorean comma in 12 equal parts, and subtracting this value to each pure
fifth, the result is a twelve-fifth chain, ending with the same value as seven octaves.
You are loading a .ALL file and one or more Combinations Sets in the organ memory are
protected by PIN. Press [MENU/ENTER] to confirm the load or [EXIT] to quit.
The system failed to load a MIDI file. The system cannot read the file's properties.
The file or file system in the USB flash drive could be corrupted. Try to re-copy the file in
the internal memory USB flash drive or to format it. If having problems with the internal
memory, try again and then, if still having problems, contact the technical support at the e-
mail address service@viscount.it communicating the error message.
The system failed to load a MIDI file. The instrument cannot read .MID files bigger than 400
Kb.
The system failed to load a MIDI file. The system cannot read the file. Try to re-copy the
file in the internal memory USB flash drive.
The system failed to load a MIDI file. The system cannot read the file. Try to re-copy the
file in the internal memory USB flash drive.
The system failed to load a MIDI file. The file is corrupted.
The file or file system in the USB flash drive could be corrupted. Try to re-copy the file in
the internal memory USB flash drive or to format it.
The system failed to load the .LST file. It could not open the file.
The file or file system in the USB flash drive could be corrupted. Try to re-copy the file in
the internal memory USB flash drive or to format it.
The system failed to load the .LST file. It could not read the number of .MID files in the list.
The file or file system in the USB flash drive could be corrupted. Try to re-copy the file in
the internal memory USB flash drive or to format it.
The system failed to load a .LST file. The number of .MID files indicated in the song list is
different from the actual number of .MID files present.
The system failed to load the .LST file. The list is empty. It is likely that the file was not
created through the proper function in the SEQUENCER menu.
The system failed to save a .CMB or .ALL file, because it could not create a new file.
The system failed to save a .CMB or .ALL file, it could not write the file's header.
The system failed to save the .CMB or .ALL file because it couldn't write the file's data.
12
. With 7 octaves instead, the result is a 2
12
is slightly higher than 2
7
= 128,0000. The ratio between these two value is called Pythagorean
EN - 43
7
frequency.
7
. Rounding off after the fourth decimal, we
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