SPX2000—Owner’s Manual 27
Reverb
Reverb
These effects add reverberation. Reverberation varies in a complex way according to factors such as the size of the room and
the material of the walls. You can use this type of effect to simulate these changes, producing a wide range of reverberation.
Reverberation can be divided into two categories of sound; early reflections and the subsequent reverberation. Early reflec-
tions are the sounds that reach your ear after being reflected only once from the walls or ceiling. The subsequent reverbera-
tion is the “wash” of sound that reaches your ear after reflecting multiple times from the walls and ceiling. The SPX2000
provides two types of reverb; those that allow you to independently control the early reflections and the reverberation, and
those that control these two as a single unit.
The SPX2000 also provides gated reverbs. These effects pass the signal through a gate so that reverb is added only while the
gate is open. One way to use these effects is to add only reverb that exceeds a specified level, and close the gate to cut the
slowly decaying reverberation.
The differences between the various types of reverb are as follows.

REV-X (PRESET bank)

These are reverbs that use a new algorithm. You can modify the enve-
lope of the reverberation.
Each aspect of the sound is controlled by the following effect parame-
ters.
Reverberation:
REV TIME, HI.RATIO, LO.RATIO, INI.DLY, DIFF., LO.FREQ., DECAY
Overall effect sound: ROOMSIZE
Filter/equalizer: HPF, LPF
Output level: OUT LVL, MIX BAL.
Parameter details
■Basic parameters
Type Bank No. of
INs/OUTs
Early reflections and
subsequent reverberation Gated Controllable envelope Page
REV-X PRESET 2IN/2OUT Unified No
Yes 27
Reverb CLASSIC 1IN/2OUT
No
29
Stereo reverb PRESET 2IN/2OUT Separate 30
Reverb 1IN/2OUT Yes 31
Reverb & Gate CLASSIC Unified 33
Parameter name Range Explanation
REV TIME 0.10—46.92s Time over which the reverberation will decay and disappear.
HI.RATIO 0.1—1.0 Length of the high-frequency or low-frequency reverberation. These times are specified as a pro-
portion of the REV TIME. If this value is set to 1.0, the length will be the same as REV TIME.
You can use these values to simulate the absorptiveness of the walls and ceiling. HI.RATIO indi-
cates the decay of the high-frequency range, and LO.RATIO indicates the decay of the low-fre-
quency range.
LO.RATIO 0.1—1.4
INI.DLY 0.0—125.0 ms Delay of the reflections relative to the original sound.
DIFF. 0—10 Density and left/right diffusion of the reverberation. Increasing this value will increase the density,
and produce a stronger sense of spaciousness.
ROOMSIZE 0—28
Size of the reverberant space. Increasing this value simulates a larger space. You can use this to sim-
ulate the absorptiveness of the walls and ceiling. Changing this value will change the REV TIME
value.
INI.DLY REV TIME
Level
Time
Reverberation
Original sound