Yamaha REV500 - Manual (Page 14)

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Parameter Ctrl. No. Range Description
LO-RATIO 17 0.1 — 2.4 Low frequency reverb time, proportional to REV TIME
DIFFUS 18 0 — 10 Spread of reverb sound
HPF 19 THRU, 20 — 1.0k [Hz] Cutoff frequency of high pass filter
LPF 20 THRU, 500 — 20k [Hz] Cutoff frequency of low pass filter
REVERB
The parameters in the following table are available for simple reverb effects.
Parameter Ctrl. No. Range Description
DENSITY 21 0 — 100 [%] Density of reverberation
LIVENESS 22 0 — 10 Early reflection decay characteristics (0 = dead, 10 = live)
E/R DLY 23 0.0 — 100.0 [ms] Delay from start of early reflections to start of reverb
Parameter Ctrl. No. Range Description
GATE LVL 24 -60 — 0 [dB] Gate threshold level
HOLD 25 1 — 5759 [ms] Time from hold time that the gate remains open
DECAY 26 1 — 24000 [ms] Time needed for gate to close completely
DETECT 27 PRE, POST Point at which threshold level is detected
REVERB
➔ GATE
In this effect type, the output from the reverb is fed into a gate.
Input Signal Envelope
GATE LVL
Time
Time
Gate Envelope
HOLD DECAY
Internal Parameter List
This section contains lists of the internal parameters for each effect type, together with a block diagram
illustrating how the effect works. Since it is also possible to control internal parameters in realtime using
MIDI Control Change messages, the corresponding controller numbers are also included in the lists.
COMMON
The internal parameters in the following table are common to all effect types.