Yamaha PSR-S750 Reference Manual page 10

Echo Types
The Echo, Tremolo or Trill effect is applied to the note played in the right-hand section of the keyboard in
time with the currently set tempo, regardless of the [ACMP] and the LEFT part on/off status. Keep in mind
that Trill works when you hold down two notes on the keyboard simultaneously (or the last two notes, if
more than two notes are held), and it plays those notes alternately.
4
Use the [4
The available settings differ depending on the Harmony/Echo type.
1
[4
[5
[6
[7
[8
10
PSR-S950/S750 Reference Manual
]–[8 ] buttons to select various Harmony/Echo settings.
] VOLUME This parameter is available for all types with the exception of "Multi
Assign." It determines the volume level of the harmony/echo notes gener-
ated by the Harmony/Echo effect.
] SPEED This parameter is only available when Echo, Tremolo, or Trill is selected
in Type above. It determines the speed of the Echo, Tremolo, and Trill
effects.
] ASSIGN Determines the keyboard Part that the effect is assigned.
AUTO: Applies the effect to the part for which PART ON/OFF is on.
MULTI: When both parts are on, the note played on the keyboard is
R1, R2: Applies the effect to the selected part (RIGHT 1 or RIGHT 2).
NOTE
] CHORD NOTE This parameter is available when one of the Harmony Types is selected.
ONLY When this is set to "ON," the Harmony effect is applied only to the note
(played in the right-hand section of the keyboard) that belongs to a chord
played in the chord section of the keyboard.
] TOUCH LIMIT This parameter is available for all types with the exception of "Multi
Assign." It determines the lowest velocity value at which the harmony
note will sound. This allows you to selectively apply the harmony by your
playing strength, letting you create harmony accents in the melody. The
harmony effect is applied when you play the key strongly (above the set
value).
When the both parts are on, the RIGHT 1 part is given priority over the
RIGHT 2 part.
sounded by RIGHT 1 part and the harmonies (effect) are divided to the
RIGHT 1 and RIGHT 2 parts. When only one part is on, the note
played on the keyboard and effect are sounded by that part.
This parameter is not available for the Multi Assign type.