Checking the Pitch
What is just intonation?
Just intonation is a method of tuning that ensures pure fth and third intervals.
If you select just intonation, you’ll need to specify the tonic (for a major scale this will be C)
that’s appropriate for the key of your song.
The VT-12 will assign the lower of two voices as the tonic.
If a guide tone is sounding, the guide tone will be the tonic.
About pitches in just intonation
The VT-12 can detect just intonation pitches only in a major key.
If the guide tone is C, the pitches are calculated using the following ratios.
C C# D D# E F
Equal temperament (cent) 0 100 200 300 400 500
Just intonation (cent) 0 71 204 316 386 498
Ratio 1 25/24 9/8 6/5 5/4 4/3
F# G G# A A# B
Equal temperament (cent) 600 700 800 900 1000 1100
Just intonation (cent) 569 702 773 884 1018 1088
Ratio 25/18 3/2 25/16 5/3 9/5 15/8
Changing the reference pitch
1. Press the [ ] button and [ ] button simultaneously.
The display will indicate the current reference pitch.
2. Use the [ ] [ ] buttons to specify the desired reference pitch.
Range: 415–465 Hz (default value: 440 Hz)
* If you do nothing for a predetermined amount of time, the indication of the reference pitch
will disappear, and the unit will automatically return to the pitch checking mode.
3. Press the [ ] button and [ ] button simultaneously.
The indication of the reference pitch will disappear, and the unit will automatically return to the
pitch checking mode.
* During the playback of Preset tracks, the reference pitch is xed at 440 Hz.
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