Yamaha Portatone PSR-640 Owner's Manual page 58

Digital Effects
Change the voice for the Harmony/Echo effect
This allows you to select the voice which is used for the harmony or echo effect.
1
Press the [FUNCTION] button.
2
Select "Digital Effect."
Use the data dial, the [+/YES] button or the [-/NO] button.
3
Press the [NEXT] button to display the Digital Effect screen.
4
Select "Harmony/Echo."
Use the data dial, the [+/YES] button or the [-/NO] button.
5
Press the [NEXT] button to display the Type selection screen.
6
Press the [NEXT] button to display the Harmony/Echo VOL-
UME screen.
7
Press the [NEXT] button to display the HARMONY PART
setting screen.
BACK
8
Set the part.
Use the data dial, the [+/YES] button or the [-/NO] button.
Auto .......... Harmony/Echo notes are automatically assigned to the R1 and R2
R1 ............. Harmony/Echo is only applied to the Voice R1.
R2 ............. Harmony/Echo is only applied to the Voice R2.
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NEXT
parts, in that order or priority.
If Voice R1 is off, there will be no Harmony/Echo effect.
If Voice R2 is off, there will be no Harmony/Echo effect.
• When the Voice Set function
is on (page 136), the
Harmony/Echo part setting
may change according to the
selected R1 panel voice.