Manual Roland DP-900 (page 32 of 48) (English)

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Changing Various Settings

■

Changing the Temperament

You can play classical styles such as Baroque using historic

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.

If you press

the [E.Piano] button

in step 2 of “Making

Detailed Settings (Function)” (p. 31), a display like the

following will appear.

fig.disp-temp.e

You can choose from among the seven temperaments

described below.

Power-up default setting

1 C

Tonic

When playing with tuning other than equal temperament, you

need to specify the keynote 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

specify the desired tonic key.

The tonic note you specify will be displayed as follows.

fig.Chart-note2.e

If you choose an equal temperament, there’s no need to select

a keynote.

* 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.

* When performing in ensemble with other instruments, be

aware that depending on the key, there may be some shifting of

the pitch. Tune the DP-900 to the fundamental pitch of the

other instruments.

■

Setting the Tuning Curve

(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.”

If you press

the [Harpsichord] button

in step 2 of “Making

Detailed Settings (Function)” (p. 31), a display like the

following will appear.

fig.disp-On

Values

OFF This is the standard tuning curve. This is the right

choice when using Dual play (p. 17), 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.

Power-up default setting

→

This effect works only with the piano tones.

Dis-

play

Temperament Qualities

Equal In this tuning, each octave is di-

vided into twelve equal steps.

Every interval produces about

the same amount of slight disso-

nance. This setting is in effect

when you turn on the power.

2 Pythagorean This tuning, devised by the phi-

losopher Pythagoras, eliminates

dissonance in fourths and fifths.

Dissonance is produced by

third-interval chords, but melo-

dies are euphonious.

3 Just Major This tuning eliminates ambigu-

ities in the 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 ma-

jor and minor keys. You can get

the same effect with the minor

scale as with the major scale.

5 Mean Tone This scale makes some compro-

mises in just intonation, enabling

transposition to other keys.

6 Werckmeister

This temperament combines the

Mean Tone and Pythagorean tun-

ings. Performances are possible

in all keys (first technique, III).

7 Kirn-berger This is an improvement of the

Mean Tone and Just tunings that

provides a high degree of free-

dom of modulation. Performanc-

es are possible in all keys (III).

Temperament Tonic

Cd_dE_E F GA_Ab_ b

CD EFGAB

D E

A B

Display

Letter

name

DP-900_e.book 32 ページ２００４年１１月２９日　月曜日　午後１２時５８分

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