Yamaha PortaSound PSS-780 Operating Manual page 13

STEREO CHORUS
Stereo Chorus creates the "spacy" impression of several
instruments being played at the same time for a warm, three-
dimensional "symphonic" sound. It is the only effect that
influences not only the melodies you play, but also all ac-
companiment sounds (except PCM percussion).
DUET
Duet differs from the other effects in that it can only be used
in combination with the AUTO ACCOMPANIMENT
functions. A detailed explanation of this feature, which au-
tomatically adds a second solo instrument to the one you
are playing, is given on p.21.
e@ Note that the Duet effect will not work in the NORMAL
AUTO ACCOMPANIMENT mode, even if the DUET
button is pressed and its indicator lit.
PITCH BEND Wheel Range: +/—12
@ Overview
This control lets you bend the pitch of notes played in the
MELODY SECTION upward or downward. The effect is
similar to a guitar being choked by bending the strings, and
is often heard during synthesizer solos.
The range of the pitch bend is adjustable. On delivery, it is
set to 1 (the default value); Moving the wheel fully in the
UP direction raises pitch by a semitone, while moving it fully
DOWN lowers the pitch by the same interval. The available
range is from one half-tone (semitone, VALUE = 1) to one
octave (VALUE = 12). To adjust it —
@ Operation
1. Hold the PITCH BEND wheel in either the UP or DOWN
position.
The current pitch bend range appears on the TEM-
PO/PARAMETER & VALUE display.
2. Use the VALUE + or — buttons to set the bend range
value.
While doing so, the PITCH BEND wheel must still be
held in the UP or DOWN position. Pressing + increases
the setting, — decreases it. A value of 1 on the
TEMPO/PARAMETER & VALUE display indicates a
bend range of one semitone, a value of 2 one whole tone,
and so on. A setting of 12 (= !2 semitones) equals one
octave.
With positive settings, the pitch bend direction will cor-
respond to the PITCH BEND wheel's UP or DOWN
movement. Setting a negative value (indicated by a "-"
on the display) reverses the pitch bend — moving the
PITCH BEND whee! UP will then decrease the pitch and
vice versa.
The setting can be returned to 1 instantly by pressing both
VALUE buttons at the same time.
10
@ The pitch bend range setting is retained even when power
is turned off.
Points to Remember
e If a VALUE button pressed for more than a second,
the value will begin to change rapidly.
e There is no setting with VALUE = 0.
@ Pitch bend data can be saved with the SONG MEM-
ORY MELODY function.
PARAMETER CHANGE Settings
@ Overview
The PARAMETER CHANGE group of buttons (13) consists
of the TEMPO button (13a), explained elsewhere (p.14), and
the three parameter selectors (13b) TRANSPOSE, TUNING
and MELODY VOLUME. Though their functions are not
connected, the setting method is the same for the latter three,
which is why they are grouped together.
It is a good idea to memorize this basic setting method, since
you will be using it for the Digital Synthesizer and MIDI
functions as well.
Parameters and Values
A parameter is simply a setting whose value can be changed.
The three parameter selectors (13b) have an red number or
letter printed on them, as do the Digital Synthesizer and
MIDI buttons to their left and right. This is the parameter
identification symbol that appears on the TEMPO/PARA-
METER & VALUE display, telling you which parameter is
currently selected.
Press TRANSPOSE [9], TUNING [d] and MELODY
VOLUME [b] one after the other. This calls up each pa-
rameter and its current value on the TEMPO/PARAMETER
& VALUE display (9).
TEMPO/PARAMETER & VALUE
indicates
selected
Parameter
Parameter value
t—___ BEAT
PARAMETER & VALUE
This dot keeps the parameter symbol on its left apart from the
value digits on its right.
The single digit left of the dot on the display is the symbol
indicating the selected PARAMETER (the symbol also
printed on the button just pressed), in our case [9]. [@] or
[b] . The one- or two-digit number to the right of the period
is the current VALUE of that parameter.
e If there is not dot on the TEMPO/PARAMETER &
VALUE display, this means that the display is currently
indicating the TEMPO.
Once a parameter is called up on the display, you can
change its value with the — and + VALUE buttons (10).
Pressing — decreases the value, + increases it. For a more