Roland AIRA Compact E-4 Voice Tweaker - Manual (Page 9)

Correcting the Pitch (AUTO PITCH)
9
Setting a fixed pitch for your voice (ROBOT)
This sets how the pitch is corrected when the AUTO PITCH is on.
1. Move the [PITCH] slider while holding down the [AUTO PITCH] button.
When a setting besides “Auto” is selected, your voice changes to an uninflected robotic voice with a fixed pitch.
Value Explanation
F.-2
Sets the voice at a fixed pitch two octaves lower.
F.-1
Sets the voice at a fixed pitch one octave lower.
Auto (Auto) Corrects the pitch of the voice to match the key value.
FIX (Fix) Sets the voice at a fixed pitch.
F. 1
Sets the voice at a fixed pitch one octave higher.
* You can also use an external MIDI device to input the key, which sets the fixed pitch.
Ø Controlling the vocoder from an external device (KEY IN) (P.18)