Roland MP-70 用户手册
34
Chapter 5. Changing Various Settings
■
Changing the Temperament
You can play classical styles such as Baroque using historic
temperaments (tuning methods).
temperaments (tuning methods).
Today, compositions are generally created with equal
temperament in mind and are played using equal
temperament. However in past ages of classical music, a
variety of temperaments were used. Playing a composition
with its original tuning lets you enjoy the sonorities of the
chords that the composer originally intended.
temperament in mind and are played using equal
temperament. However in past ages of classical music, a
variety of temperaments were used. Playing a composition
with its original tuning lets you enjoy the sonorities of the
chords that the composer originally intended.
1.
Hold down the [SPLIT] button, and press the [TWIN
PIANO] button.
The MP-70 switches to the function mode.
2.
Press the [E.PIANO] button.
The following appears in the display.
fig.disp-temp.j
You can choose from among the seven temperaments
described below.
described below.
Power-up default setting
1 C
Tonic
When playing with tuning other than equal temperament,
you need to specify the tonic note for tuning the song to be
performed (that is, the note that corresponds to C for a major
key or to A for a minor key).
you need to specify the tonic note for tuning the song to be
performed (that is, the note that corresponds to C for a major
key or to A for a minor key).
While hold down
the [E. PIANO] button
, and press
a note
to specify the desired tonic key.
The tonic note you specify will be displayed as follows.
fig.Chart_note2.j
If you choose an equal temperament, there’s no need to select
a tonic note.
a tonic note.
* If you record with a temperament other than equal
temperament selected, and then want to play back that
performance, use this setting to select the same temperament
for playback as the temperament you used when recording.
performance, use this setting to select the same temperament
for playback as the temperament you used when recording.
* When performing in ensemble with other instruments, be
aware that depending on the key, there may be some shifting of
the pitch. Tune the MP-70 to the fundamental pitch of the
other instruments.
the pitch. Tune the MP-70 to the fundamental pitch of the
other instruments.
■
Setting the Tuning Curve
(Stretch Tuning)
(Stretch Tuning)
A piano is generally tuned to a pitch with a lower bass range
and a higher treble range than equal temperament. This
special tuning method for pianos is called “Stretch Tuning.”
and a higher treble range than equal temperament. This
special tuning method for pianos is called “Stretch Tuning.”
1.
Hold down the [SPLIT] button, and press the [TWIN
PIANO] button.
The MP-70 switches to the function mode.
2.
Press the [HARPSICHORD] button.
The button’s indicator flashes.
The following appears in the display.
fig.disp-On
Power-up default setting
On
* This effect works only with the piano tones.
Dis-
play
play
Temperament
Qualities
1
Equal
In this tuning, each octave is divided into
twelve equal steps. Every interval
produces about the same amount of
slight dissonance.
twelve equal steps. Every interval
produces about the same amount of
slight dissonance.
2
Pythagorean
This tuning, devised by the philosopher
Pythagoras, eliminates dissonance in
fourths and fifths. Dissonance is
produced by third-interval chords, but
melodies are euphonious.
Pythagoras, eliminates dissonance in
fourths and fifths. Dissonance is
produced by third-interval chords, but
melodies are euphonious.
3
Just Major
This tuning eliminates ambiguities in the
fifths and thirds. It is unsuited to playing
melodies and cannot be transposed, but
is capable of beautiful sonorities.
fifths and thirds. It is unsuited to playing
melodies and cannot be transposed, but
is capable of beautiful sonorities.
4
Just Minor
The Just tunings differ from major and
minor keys. You can get the same effect
with the minor scale as with the major
scale.
minor keys. You can get the same effect
with the minor scale as with the major
scale.
5
Mean Tone
This scale makes some compromises in
just intonation, enabling transposition to
other keys.
just intonation, enabling transposition to
other keys.
6
Werckmeister
This temperament combines the Mean
Tone and Pythagorean tunings.
Performances are possible in all keys
(first technique, III).
Tone and Pythagorean tunings.
Performances are possible in all keys
(first technique, III).
7
Kirnberger
This is an improvement of the Mean
Tone and Just tunings that provides a
high degree of freedom of modulation.
Performances are possible in all keys
(III).
Tone and Just tunings that provides a
high degree of freedom of modulation.
Performances are possible in all keys
(III).
Temperament
Tonic
Display
Descriptions
OFF
This is the standard tuning curve. This is the right choice
when using Dual play (p. 19), or when playing in
ensemble with other instruments.
when using Dual play (p. 19), or when playing in
ensemble with other instruments.
On
This tuning curve expands the bass and treble ends
somewhat. It is suitable for performances such as piano
solos. This setting is in effect when you turn on the
power.
somewhat. It is suitable for performances such as piano
solos. This setting is in effect when you turn on the
power.
C C d E_ E F F G A_ A b_ b
C C D E E F F
G A
A B
B
Display
Letter
name
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