The Reverb effect simulates how sound reverberates in acoustic spaces like a concert hall or room.
Effect Variation - The type of reverb. Hall 1, 2, 3, Room 1, 2, 3, Plate, and Spring 1, 2, 3.
Predelay - An additional amount of time the reverb is delayed. Normally set to zero.
Decay Time - The time it takes for the reverb tail to drop below -60 dB.
Room Size - The size of the room. It also effects the decay time.
EQ - The amount of boost or cut to the low and high frequency bands. Normally you would want to cut the low frequencies some so they don't overpower the reverb.
Modulation - The amount the delays are modulated. This adds a natural, dynamic quality to the reverb. For Hall and Room only.
Damp Low Freqs. - Controls how fast the low frequencies decay. For Plate and Spring only.
Damp High Freqs. - Controls how fast the high frequencies decay.
Diffusion - The amount of diffusion. Lower settings make the early reflections more pronounced, while higher settings smooth out the reverb.
Stereo Spread - The width of the stereo image. Negative numbers swap the left and right outputs.
Dry/Wet - The balance between the dry and wet signals.
Spring - Controls how "springy" the Spring reverb sounds.
A plate reverb is a large metal plate with two or more transducers on it. It's normally only found in studios. A spring reverb is a small metal box (tank) with two or three springs inside. Each spring has a transducer at both ends that converts the electrical energy to mechanical energy, then back to electrical energy. It's found in some guitar amps and organs.