The Reverb section has controls for the various reverb tail elements, including type, level, time, size, spread, attack time, attack shape, rear shape, diffusion, and pre-delay. These determine the overall character of the reverb tail.
Type is a pop-up menu that sets the type of reverb tail. There are nine basic reverb types, plus the Automatic type. Selecting the Automatic reverb type will select the type of reverb tail that is stored with the currently selected room type. The reverb types are:
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Automatic selects the reverb tail type stored with the room type.
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Natural is an average reverb tail type with no extreme characteristics.
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Smooth is optimized for large rooms.
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Fast Attack can be useful for plate reverbs.
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Dense is similar to smooth, and can also be good for a plate reverb.
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Tight is good for small to medium rooms.
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Sparse 1 produces sparse early reflections with a high diffusion buildup.
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Sparse 2 can be useful for a spring reverb.
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Wide is a generic large reverb.
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Small is optimized for small rooms.
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Level controls the output level of the reverb tail. When set to –INF (minus infinity) no reverb tail is heard, and the reverb effect consists entirely of the early reflections (if enabled). The range of this control is from –INF to 6.0 dB.
Time controls how long the reverberation continues after the original source signal stops. The range of this control is from 100.0 ms to Inf (infinity). Setting Time to its maximum value will produce infinite reverberation.
The Pre-Delay control in the Reverb section sets the amount of time that elapses between signal input and the onset of the reverb tail.
Under natural conditions, the amount of pre-delay depends on the size and construction of the acoustic space and the relative position of the sound source and the listener. Pre-delay attempts to duplicate this phenomenon and is used to create a sense of distance and volume within an acoustic space. Extremely long pre-delay settings produce effects that are unnatural but sonically interesting.
The range of this control is from 0.0 ms to 300.0 ms.
Diffusion controls the rate that the sound density of the reverb tail increases over time. The control ranges between –50% and 50%. At 0%, diffusion is set to an optimal preset value. Positive Diffusion settings create a longer initial buildup of echo density. At negative settings, the buildup of echo density is slower than at the optimal preset value.
Attack Time adjusts the length of time between the start of the reverb tail and its peak level. Settings are Short, Medium, or Long.
Attack Shape determines the contour of the attack portion of the reverberation envelope. At 0%, there is no buildup contour, and the reverb tail begins at its peak level. At a high Attack Shape setting the reverb tail begins at a relatively low initial level and ramps up to the peak reverb level. The range of this control is from 0% to 100%.
Rear Shape adjusts the envelope of the reverb in the rear channels to control the length of the attack time. This gives more reverb presence and a longer reverb bloom in the rear channels. The range of this control is from 0% to 100%.
The Size control adjusts the apparent size of the reverberant space from small to large. Set the Size control to approximate the size of the acoustic space you want to simulate. Size values are given in meters. The range of this control is from 2.0 m to 60.0 m (though relative size will change based on the current Room Type).
Larger settings of the Size parameter increase both the Time and Spread parameters.
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Spread controls the rate at which reverberation builds up. Spread works in conjunction with the Attack Shape control to determine the initial contour and overall ambience of the reverberation envelope.
At low Spread settings there is a rapid onset of reverb at the beginning of the reverberation envelope. Higher settings lengthen both the attack and buildup of the initial reverb contour. The range of this control is from 0% to 100%.