Lexicon PANTHEON musical instrument - Manual (Page 9)

DESCRIPTION OF PARAMETERS
9
Custom is a effect suited to achieve unnatural or special application reverbs where a
wide parameter range is needed.
PRE-DELAY
Pre-Delay controls the amount of delay time that precedes the initial sound from the
reverb. This parameter is used to place the reverberated signal in time with respect to
the unprocessed signal. Natural settings for this are based on the size of the
environment and range from 0 to 19 milliseconds. Fine adjustment of this parameter
with respect to the tempo of the song or dramatic timing of the piece can help set the
feel of the reverb within the mix.
ROOM SIZE
Room Size is a scale factor that alters the length of most of the reverb’s delay elements.
This control is calibrated in units that approximate the longest dimension of the
reverberant “space” in meters. In practice, perception of room size is also strongly
determined by Spread. The Room Size parameter strongly affects the overall timbre of
the reverberation. Values less than 25 have noticeable “small room” coloration unless
the Diffusion parameter is also reduced. For the most neutral halls and chamber
sounds, set Size to around 30 to 40 meters, and finely adjust the apparent size with the
Spread parameter.
RT60
RT60 is the reverberation time. RT60 is the basic control for setting the duration in
seconds of the reverberant tail for the current room size. The perceived decay time
will also be affected by Damping and Bass Boost. In general, as the size of the space
increases the RT60 will also increase. RT60 should be set to a value of about 1.2
seconds or less for small rooms and up to 2.4 seconds or so for halls. Interesting,
unnatural spaces and nonlinear reverbs can be created by setting the RT60 unusually
low with respect to the size parameter.