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QuadraSynth Reference Manual 103
Reverb (Page 4)
Diffusion
Reverb can be thought of as a great number of distinct echoes, called reflections, that
occur so fast that our ear hears them blurred together as one. Diffusion is the space
between these echoes. On some Reverb programs, you may actually hear the
multiple echoes repeating when the diffusion amount is set to 00. As you increase the
diffusion amount, you will no longer perceive distinct echoes and will observe the
Reverb sounding Òthicker.Ó Therefore, the Reverb Diffusion amount can be thought
of as control over how thick the reverb will be.
DIFFUSION OF 0 DIFFUSION OF 99
L
E
V
E
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TIME
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TIME
Reflections further apart. Reflections closer together.
Density
In order to explain exactly what density is, we must refer to the previous explanation
of Reverb Diffusion. We already know that reverb consists of distinct echoes, called
reflections. The most important of these, and the loudest, is the First Reflection.
Usually, in nature, there is a space of time between the First Reflection and all of the
other reflections that make up the reverb sound field. If you listen to only the reverb
with the Reverb Density set at 00, you will hear your source sound repeat, a short bit
of silence and then the onset of the reverb. As the Reverb Density is increased, the
time between the First Reflection and the rest of the reverb reflections is decreased
until you can no longer distinguish the First Reflection separately. If you listen to the
Reverb by itself with the Density set to 99, it will seem to ÒexplodeÓ since the First
Reflection will no longer be perceived as a separate echo. This parameter can be quite
useful with highly transient source material such as percussion, where the sound can
sometimes become confused by the First Reflection seemingly causing an additional
Òhit.Ó
DENSITY OF 0 DENSITY OF 99
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TIME
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1st reflection further apart. 1st reflection closer together.
If the select Reverb type is Large, the Density parameter is unavailable.