The Half Pedal enabled the half pedal effect. It allow the sustain pedal to 'retrigger' the notes that did not die since the last pedal release event. The True Pedal Action enabled the resonance effect even if you press the sustain pedal after the chord, The Sympathetic Resonance controls the volume and polyphony allowed for the sympathetic resonance effect on pedal up, The Pedal down resonance controls the volume of the resonance when the sustain pedal is pressed, The Key noise controls the volume of the sound produced by the key itself when you release a note,
The Pedal Noise controls the volume of the sound produced when you press and depress the sustain pedal, The Release Vol controls the volume of the sound produced when you release a note,
