Alesis QuadraSynth Plus manual Pre-Delay Time, Pre-Delay Mix, Input Filter, Decay

Editing Effects: Chapter 7

Gated. Gated Reverb is a very popular effect on drums first found on English records in the early 1980s. This reverb type can simulate applying a noise gate (a device that automatically decreases the volume once the signal falls below a certain level) across the output of the reverb thereby causing the initial attack of the reverb to sound very big, but the tail of the reverb to be cut off very quickly. Although this effect is not found in nature, it works great for modern drums, percussion, and any quickly repeated, transient source.

Reverse. The Reverse Reverb type is an inverted reverb in which the volume envelope is reversed. This means that the signal begins softly but grows louder until it is cut off, rather than loud to soft as normal.

Pre-Delay Time

Pre-Delay is the slight delaying of the Reverb itself so that the dry signal more easily stands out from the Reverb. A bit of Pre- Delay can sometimes make certain instruments (such as snare drums) sound bigger. Use Quad Knob [2] to adjust the Pre-Delay Time in 10ms intervals, and/or use Quad Knob [3] to adjust the Pre-Delay Time in 1ms intervals. This Pre-Delay is part of the Reverb itself; don’t confuse it with the separate Delay modules available under the Delay function.

Pre-Delay Mix

Quad Knob [4] allows you to mix the amount of Pre-Delay into the Reverb signal path. This gives you the ability to hear a bit of the Reverb before the loudest part of the Reverb (the Pre- Delayed Reverb) sounds. This makes for bigger and smoother sounding Reverb settings.

Reverb (Page 3)

Input Filter

This is a low-pass filter which comes before the Reverb input. Use Quad Knob [1] to adjust the filter frequency. Lower the Input Filter to remove high frequencies from the input signal before they go into the Reverb.

Decay

The Reverb Decay determines how long the Reverb will sound before it dies away. When using the Reverse Reverb type, Reverb Decay controls the Reverse Time.

Low Decay and High Decay

These two parameters allow the Decay Time to be set separately for both the low and high frequencies of the Reverb. This means that you have control over the tonal shape of the Reverb itself, being able to make the high frequencies die faster if the effect is too bright, and being able to make the lows die faster if the effect is too boomy. This allows you to simulate different surfaces of a

QuadraSynth Plus Piano Reference Manual 149