User Manual

45
Shelf
This parameter effects all filter types. The shelf specifies the audio level below which the filter
has no effect. For example, let’s imagine we’re using a one-pole lowpass with shelf set at -12
dB. The lowpass filter affects only the strongest 12 dB of the signal. Below the shelf, the signal
is unfiltered. This is easy to understand by viewing the EQ window.
Size (Reverb Size)
Size corresponds roughly to the length of the longest wall of a rectangular room. In a more
general sense, it corresponds to the overall dimension of some mythical space. This space has a
geometry that causes sound to bounce around. When the room size is small, the “walls” of this
space are closer together and the resultant reflection density increases. When the room size is
large, that density decreases. The most natural reverbs use room sizes that vary from about 24
meters to 45 meters or so, but there are many useful reverbs that are outside of this range.
There is a relationship between this parameter and the Reverb Time parameter. Please see the
Reverb Time parameter for clarification.
Spin and Wander
These two parameter control randomization effects within the reverb. Randomization is used
to control the spectral purity of the reverb. It can also—at some settings—create a more
noticeable modulation effect. Artificial reverbs sometimes create audible artifacts with some
types of signals. For example, a voiceover in a very small room might sound a little metallic.
Randomization works to minimize these effects and remove the sense of ringiness.
Spin controls the rate of randomization. In most cases, values between 1 - 2 Hz are appropriate.
Wander controls the amount by which various delay values may be modulated. Typically, these
values should be smaller for plates and chambers or for very small rooms. But it’s always best to
listen with the material you’re using.