Special Features; Changing Keys; Tuning The Keyboard - Optimus MD-1150 Owner's Manual

42-4039.fm Page 23 Friday, March 3, 2000 8:55 AM

SPECIAL FEATURES

CHANGING KEYS

The keyboard automatically selects the
key of middle C each time you turn it on.
For added flexibility as you play, the
keyboard lets you change (transpose)
the musical key in which it plays.
Note: You cannot change the key while
a prerecorded tune is selected or play-
ing.
1. Repeatedly press
until
TUNE/MIDI Trans
rent key setting appear.
TRANSPOSE/TUNE/MIDI
Note: The number on the display is
the number of "semitones" to which
the keyboard is set, compared to its
default key. A semitone is a mea-
surement that represents the acous-
tical interval between the tones of
any two keys on the keyboard.
For example,
between C and C# or B and B# is
one semitone. You can transpose
the key down 6 semitones (to an F#)
and up 5 semitones (to an F) — a
full octave.
2. Within 5 seconds, press
lower or raise the key. Each time
you press or , the number on the
– +
Notes:
TRANSPOSE/
and the cur-
the difference

TUNING THE KEYBOARD

Although your keyboard never goes out
of tune, it does let you adjust its pitch to
match other instruments or musical re-
cordings.
or to
– +
display decreases or increases by 1
(semitone).
As you raise the key, 1 is C#, 2 is D,
and so on. As you lower the key, –1
is B, –2 is A#, –3 is A, and so on.
• You can also use the number key-
pad to quickly raise the key. Simply
press the semitone change value (1
to 5).
• The keyboard automatically resets
the key to the default value of 0
(middle C) each time you play a pre-
recorded tune.
• Each preset tone plays within a
specified range. If a key change
causes a note to exceed its range,
the same note sounds in the nearest
octave.
• When you select preset tones 90
through 96 after changing the key,
the keyboard split point changes
accordingly (see "Keyboard Split
Tones" on Page 14).
• Changing the key does not affect
the PERCUSSION (No. 99) preset
tone.
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