The Reverb effect simulates the sound reflection in a space.  
The following sliders are available:
Reverb Time
Specifies the duration of the reverb.
Room Size
Specifies the size of the imaginary room in which the reverb is to be generated.
Brightness
Specifies the brightness of the reverb.
The following sliders are available in the Mix area:
Dry Signal
Mixes the original signal with the edited copy, indicating the intensity of the original signal.
Effect
Mixes the original signal with the edited copy, indicating the intensity of the edited signal.
 


Reverb