Yamaha DGX-670 Reference Manual page 8

 Harmony
The types from Standard Duet 1 to Strum apply the harmony effect to notes played in the right-hand
section of the keyboard according to the chord specified in the left-hand section of the keyboard. (Note
that the "1+5" and "Octave" settings are not affected by the chord.) If you want to use these types with
the Style stopped, set the Stop ACMP parameter to a setting other than Disabled in the Style Setting
display (page
• When the [ACMP] button is on and the Left part is off:
2
• When the [ACMP] button is off and the Left part is on:
• When both the [ACMP] button and the Left part are on:
The Multi Assign effect automatically assigns notes played simultaneously on the right-hand section of
the keyboard to separate parts (Voices). Both of the keyboard parts [MAIN] and [LAYER] should be
turned on when using the Multi Assign effect. The Main and Layer Voices are alternately assigned to the
notes in the order you play.
 Echo
When Echo, Tremolo or Trill is selected, the corresponding effect (echo, tremolo, trill) 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 only works when you hold down two notes
on the keyboard simultaneously (last two notes if more than two notes are held), and it plays those notes
alternately.
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DGX-670 Reference Manual
25).
Chord section for Style playback and Harmony effect
Left Voice and chord section for Harmony effect
Style Split Point
Chord section for Style playback and Harmony effect
Split Point
Split Point
Main and Layer Voices
Left Split Point
Main and Layer Voices
Left Voice