Roland VP-770 用户手册

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页码 128
52
Shifting  Octave Up or Down
 (+ OCT/-OCT)
You can shift the keyboard pitch range up or down in a range of ±3 octaves.
Shifting Upward One Octave
Press the [+OCT] button once; the button will light and the keyboard
will be shifted upward one octave.
You can shift up to +3 octaves in this way.
To return the keyboard to its original pitch range, press the [+OCT] and [-OCT] buttons simultaneously.
Shifting Downward One Octave
Press the [-OCT] button once; the button will light and the keyboard 
will be shifted downward one octave.
You can shift up to -3 octaves in this way.
To return the keyboard to its original pitch range, press the [+OCT] and [-OCT] buttons simultaneously.
Pressing the [+OCT]/[-OCT] buttons won’t change the range of the Bass & Percussion part.
The octave buttons simultaneously change the pitch range of the Vocal Designer and the
Ensemble Part. However, by holding down the [SHIFT] button and pressing the [+OCT] or [-OCT] 
button, you can individually change the pitch range of the Vocal Designer, Ensemble, and Bass & 
Percussion parts.