Lexicon 300 - Page 65

300 ” 3.0 Owner’s Manual
Lexicon
Rich Plate Basic Sounds Page
RTIM (Reverb Time)
This control adjusts the reverberation time of the independent reverberator. The
range of action is limfted. Be careful-both long and short reverb times may
soundunnatural.ifamuchiongerorshoderreve~timethanthepresetprovides
is desired, SIZE should be changed first.
SIZE SIZE allows you to vary the apparent size of the space over a wide range. SIZE
isthemostdramaticcontrol, andmust beselectedto matchthe musicorprogram
materfal. It should be the first control that you adjust to tailor the desired space.
SIZE also affects the reverb time, in a similar way to the standard reverb pro-
grams.
ROLL (Hi Freq Rolloff)
PDLY (Pre-Delay)
RLVL (Reverb Level)
TDCY (Treble Decay)
BASS (Bass Multiply)
XOVR (Bass Crossover)
4.12
ROLL sets the frequency above which a 6 dB/octave low-pass filter attenuates
the processed signal. It attenuates both pre-echoes and reverberant sound.
High frequencies are often rolled off with this parameter, resulting in more natu-
ral sounding reverberation.
PDLY adds an additional delay to the reflections and to the reverberation. This
controlmaybeuseful inasoundreinforcements~uation,orforambienceeffe~s.
Both DDLY and PDLY have 4-sample (approximately 0.1 msec) resolution.
RLVL sets the amount of reverberation in the processed signal. it is normally
FULL, but may be reduced for effects where the pre-echoes should dominate.
TDCY sets the frequency above which sounds decay at a progressively faster
rate. ltfiltersall thesoundexceptthepre-echoes. Whenset relativelylow,itgives
a darkertone to the reverberation, simulating the effect of air absorption in a real
hall. TDCY also helps keep the ambience generated by the program from
muddying the direct sound.
BASS sets the reverb time for low-frequency signals, as a muftiplier of the RTIM
parameter. For example, ff BASS is set to 2X, and RTIM is set to two seconds,
the low frequency reverb time will be four seconds. For a natural-sounding hall
ambience, we recommend values of I .5X or less.
XOVRsetsthefrequencyatwhichthe transitionfrom RTIM to BASStakesplace.
XOVRshouldbesetat leasttwooctaves higherthanthelowfrequencyyouwant
to boost. For example, to boost a signal at 100 Hz, set XOVR to 400 Hz (This
settingworkswellforclassical music). XOVRworks bestaround4OOforboosting
low frequencies, and around 1.5 kHz for cutting low frequencies.
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