Roland E-4 Aira Compact Voice TweakerVocal performance tool with powerful voice transformer effects Instantly shape the sound with pitch and formant sliders Advanced vocal effects including Auto Pitch, harmony, and vocoder Dial up unique rhythmic effects with the Scatter knob Process the sound output with high quality reverb, echo, tempo delay, and chorus effects Low cut filter and noise gate to eliminate unwanted sounds 24 second looper with unlimited overdubbing, undo redo, and