Temperaments - Yamaha Harmony Director HD-300 Owner's Manual

Producing Reference Tones for Playing Harmony (Voice, Temperament, Hold, Octave, Transpose)
You can also press the [TRANSPOSE] button and move the cursor to the transpose area to adjust the transpose value.
Adjust the transpose value using the dial or the [-]/[+] buttons. The transpose value range is -2 – +12 semitones. Press
both [-]/[+] buttons simultaneously to return the transpose value to 0.
Changing the standard pitch
To change the standard pitch from 442Hz, call up the Settings screen by pressing the [SETTING] button, and change
the "Standard Pitch" value.
NOTE
To move the cursor on the Settings screen, use the BEAT • TEMPO MEMORY CURSOR [L][R] buttons. To change values, use the
dial or [-][+] buttons. To exit from the menu, press the [EXIT] button.

Temperaments

Users can configure advanced settings, such as the root key and temperament (Equal/Pure/Individual temperament)
settings, using this function.
Setting the Root Key
The root key is primarily used to determine the keynote for the "Pure" and "Individual" settings.
To set the root key, play a chord on the keyboard.
The instrument will recognize the chord pressed and change the root key accordingly. For major chords this will be set to
major (displayed in upper case letter), and for minor chords this will be set to minor (displayed in lower case letter). The
recognized chord and the root key will appear on the screen.
NOTE
If the chord cannot be determined, the root key will not change.
Chord detection and root key changes continue with each key pressed
on the keyboard. To lock (fix) the current root key, press and hold the
[PURE] button.
When a root key is locked, a
chord name on the screen. Additionally, if a pure temperament is
selected, the [PURE] button lamp will light up in green.
NOTE
Chord detection will stop when the root key is locked.
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HD-300 Owner's Manual
Name of the recognized chord
Name of the current root key. Upper case letter means major,
and lower case letter means minor.
icon will appear to the right of the