IBM PS1500 Mixer Lock, Lower Memory, Tempo Lock, Fade In/Out, Bass Follow, User Guide

The Accompaniment section

MEMORY

When this button is on (LED on), the accompani- ment continues to play after releasing the left hand from the keyboard. When off, releasing your left hand causes the accompaniment to stop.

MIXER LOCK

A Preset also memorizes the track volumes. If MIXER LOCK is off, when a Style or Preset is selected the track volumes change too. If it is on, all the volumes of the tracks assigned to the keyboard and accompaniment rest unchanged.

LOWER MEMORY

If this is on (LED on), the notes of the track as- signed to the left hand (Lower) are held even if the left hand is taken away from the keys.

The Lower Memory function is useful for holding on ‘background’ sounds without having to use a Damper pedal (which may be of more use with the Upper sounds).

When off, releasing your left hand will cause the Lower sound to stop playing.

TEMPO LOCK

If Tempo Lock is off, when a Style or a Preset is selected the tempo changes. If the function is on, the tempo will not change.

FADE IN/OUT

FADE IN/OUT fades the accompaniment with a gradual increase or decrease of volume.

Press the button before starting the accompani- ment. The Style track volumes are instantly set to zero. Use either START/STOP or KEY START to start the accompaniment. After the start, the accompaniment track volumes gradually increase and reach their programmed peak after a 2 meas- ure (bar) cycle.

Press FADE IN/OUT while the accompaniment is running; all the track volumes gradually de- crease and the accompaniment automatically stops at the end of the Fade Out cycle.

During the Fade cycle, the relative LED flashes.

BASS FOLLOW

If BASS FOLLOW is on, the bass part of the auto accompaniment of the current Style plays accord- ing to the lowest note of the current chord. If you play a different inversion of the same chord, the lowest note also changes resulting in a different bass note being played.

If off, the bass will follow the original programmed pattern of the Style.

Bass Follow permits real time changes to the oth- erwise fixed bass pattern of a Style, by playing different chord inversions.

5•10 User Guide