Yamaha PSR-48 Authorized Product Manual page 17

*
DUAL VOICE cannot be applied to
accompaniment or rhythm.
*
When DUAL VOICE is ON, the number
of notes that can be played
simultaneously is reduced by half.
*
If DUAL VOICE is used when the SPLIT
mode is selected (see page 18), the
effect applies to both the upper and
lower voices.
PITCH BEND:
The PITCH BEND wheel located to the
left of the keyboard offers extra expressive
control by allowing you to manually "bend"
(raise or lower) the pitch of the selected
performance voice. Rotating the PITCH
BEND wheel away from you raises pitch,
while moving it toward you lowers pitch.
When released, the PITCH BEND wheel
automatically returns to the center (normal
pitch) position. The total pitch bend range
is approximately ±200 cents (100 cents =
one semitone).
* The PITCH BEND effect cannot be
applied to accompaniment or rhythm, or
mode.
the lower voice in the SPLIT
15