Yamaha PDP-400 ,

22

■Full-keyboard ABC

Auto Bass Chord (ABC)

When this advanced auto-accompaniment mode is engaged (press the [FULL KEY-

BOARD] button so that its indicator lights) the PDP-400 will automatically create ap-

propriate accompaniment while you play just about anything, anywhere on the keyboard:

chords, a bass line, arpeggiated chords, a melody line. You don’t have to worry about

specifying the accompaniment chords. Although Full-keyboard ABC is designed to work

with many songs, some arrangements may not be suitable for use with this feature. Try

playing a few simple songs in the Full-keyboard ABC mode to get a feel for its capabili-

ties.

NOTES

•Chord detection occurs at approximately 8th-note intervals. Extremely short chords —

less than an 8th note in length — may therefore not be detected.

The Conventional Full-keyboard ABC mode can be engaged by pressing the [SIN-

GLE FINGER] and [FINGERED] buttons simultaneously (both indicators will light).

In this mode the split point is de-activated and notes played anywhere on the keyboard

are detected and used to determine the harmonization of the accompaniment. In the Con-

ventional Full-keyboard ABC mode, chord detection is possible when at least three notes

are played anywhere on the keyboard.

●Full-keyboard ABC

●Conventional Full-

keyboard ABC

■Volume Control

NOTES

•The Dual or SPLIT mode can be used with Full-keyboard ABC.

•The Full-keyboard and Conventional Full-keyboard ABC modes will be disengaged and

the Fingered mode will be engaged if Solo Styleplay is turned on.

•Solo Styleplay will automatically be turned off whenever the Full-keyboard or Conven-

tional Full-keyboard ABC mode is engaged.

•Press the [FULL KEYBOARD] button so that its indicator goes out when you want to exit

from the FULL-KEYBOARD ABC mode. To exit from the Conventional Full-keyboard

ABC mode press the [SINGLE FINGER] or [FINGERED] button twice.

The RHYTHM, CHORD 1, CHORD 2, and BASS volume controls can be used to

adjust the volume of the corresponding accompaniment parts when using ABC. In gen-

eral, CHORD 1 controls rhythmic chords while CHORD 2 controls more decorative

chords (arpeggios, etc.). The volume of the keyboard can be independently controlled by

using the BASS volume control while holding the [MIDI/TRANSPOSE] button.

NOTES

•Some styles may not use all four parts: RHYTHM, CHORD 1, CHORD 2, and BASS.

•Usually the CHORD 1 and CHORD 2 parts will not play simultaneously in the Full-

keyboard ABC mode to prevent possible conflict with the melody. The sound of the

silent part can be restored by changing the setting of the corresponding volume control

— CHORD 1 or CHORD 2.

■Changing the ABC Split Point

The ABC split point can be set at any key by pressing the desired key while holding

the [SINGLE FINGER] or [FINGERED] button.

The default split point — F#2 — will always be set automatically whenever the

power is initially turned on.

■Special Modes

When playing a 7th chord in a minor key, the ABC system will automatically shift a 9th

note down to the octave, and a 6th note to the 5th when the “Minor Harmonization” utility

function described on page 43 is turned on. The default setting for this function is off.

NOTES

•Minor Harmonization will not function in the Full-keyboard ABC mode.

●Mute Some accompaniment notes may be automatically muted if they interfere musically

with what is being played by the right hand. This mute function can be enabled or disa-

bled via the Utility mode “Mute” function described on page 43. The mute function is

normally enabled (default).

●Minor Harmonization

FULL KEYBOARD

SINGLE FINGERFULL KEYBOARD FINGERED

MIDI/

TRANSPOSE

MAX

MIN

MAX

MIN

MAX

MIN

RHYTHM CHORD 1 CHORD 2

BASS

AUTO ACCOMPANIMENT

MAX

MIN

BASS

SINGLE FINGER