KORG PA4X 76 - Manual (Page 501)

Effect parameters |497
Rolloff 0…100 This controls a lowpass filter on the output
of the effect. Settings around 6-8kHz are
good for producing a warm, smooth sound.
d Pre Delay [msec] 0…1360 Sets the delay time from the dry sound
Diffusion 1 0…100 Diffusion 1 and 2 soften the sound before
it enters the reverb core, shaping the tim-
bre of the initial reflections. Setting both
diffusers to around 50 generally produces
sufficient diffusion for smooth reverbs; ex-
tremely high levels may cause ringing.
Some source material, such as vocals, may
also benefit from lower settings of diffu-
sion, allowing for more discrete echoes.
Diffusion1 and Diffusion2 differ in how the
reflections are spaced, and the balance be-
tween these two parameters will vary the
character of the reverb.
Diffusion 2 0…100
e Size 5…100 Sets the size of the space.
Diffusion 0…100 This sets the density of reflections within
the main reverb. Low settings will produce
more discrete echoes, and high settings
will produce a smoother reverb. Extremely
high settings may cause ringing.
Reverb Decay 0…100 This sets the main reverberation time. The
Damping and Bass Gain parameters, be-
low, let you adjust the decay times sepa-
rately for the high and low frequencies,
respectively.
f Damping 0…100 This sets the cutoff of the high-frequency
damping filter. If Damping is set to 100, the
high frequencies will decay at the same
rate as the low frequencies; at 0, the high
frequencies will decay almost instantly.
In real acoustic spaces, high frequencies
generally delay somewhat faster than
low frequencies, so moderate amounts of
damping will create a more realistic sound.
Bass Crossover [Hz] 20…24.00k Sets the crossover frequency for the Bass
Gain.
Bass Gain [dB] -12.0…+6.0 This lets you tailor the decay time of the
reverb’s low frequencies, using the fre-
quency set by the Bass Xover. Negative
settings make the low frequencies decay
faster than the main reverb; positive set-
tings make them decay more slowly.
g Modulation Rate [Hz] 0.10…5.00 Speed of modulation.
Modulation Depth 0…100 Depth of modulation.