Alesis MidiVerb4 User Manual - Page 33

Chapter 3 - Overview of Effects Note: The illustration above reflects a Density setting of 0. Frequency Damping - Low & High These two parameters allow you to control the equalization of the reverb's decay separately for both the low and high frequencies. This means that you have control over the tonal shape of the Reverb itself, being able to cut the high frequencies if the effect is too bright, and being able to cut the lows if the effect is too boomy. These parameters allow you to simulate different surfaces of a room or hall, with softer surfaces absorbing more high frequencies and smaller rooms having less low frequencies. Example: If a room has lots of drapes hung, the high frequencies will decay faster than the lower frequencies. Reverberation Swirl This parameter is very useful for smoothing the decay of the reverb when set at a low value. When set to a high value, it creates a more dramatic detuning effect as the reverb decays. Gating Gating is the process which abruptly cuts off the reverb's decay for a more "choppy" sound. This effect is very popular on drums because it makes them sound HUGE. It is achieved by dropping the level of the signal very rapidly after the initial attack making a short, sharp sound. In all the Single Configuration reverb effect types and most of the Double and Multi Chain Configurations which use the Realroom effect type, there are three gating parameters available. These include: Gate, Hold Time, and Release Time. The Gate controls the level of the reverb signal after the gate closes, and can be set between 001 and 100%. In other words, if Gate is set to 100%, then no reverb will sound after the gate turns it off. If Gate is set to 50%, then some reverb signal will still be present even after the gate turns off the main reverb signal. Alternatively, the Gate parameter can be set to "OFF" when you do not wish to use the gating effect. The Hold Time determines how long the gate will be held open before it begins to turn off; this can be set from 0 to 500 ms. The rate at which the gate closes is determined by the Release Time, which can be set from 0 to 500 ms. In the case of the Chorus->Room, Flange->Room and Room->Flange Configurations, only one parameter is available: Gate. This can be set between 10 and 500 ms, and controls both the hold and release times of the gate effect. Alternatively, the Gate parameter can be set to "OFF" when you do not wish to use the gating effect. 32 MidiVerb 4 Reference Manual