Kurzweil K2500 Reference Manual page 31

The Rvb Env control selects 27 cases of envelope gains for the taps. Nine cases emulate a normal forward-evolving
reverb, but with some special twists. Cases FWD R1xx have a single reverb peak, with a fast attack and slower
decay. The sub cases FWD R1Sx vary the sharpness of the envelope, from dullest (S1) to sharpest (S3). The sub cases
FWD R2xx have two peaks; that is, the reverb builds, decays, builds again, and decays again. The sub cases FWD
R3xx have three peaks.
The sub cases SYM have a symmetrical build and decay time. The cases R1 build to a single peak, while R2 and R3
have two and three peaks, respectively.
The sub cases REV simulate a reverse reverb effect. REV R1xx imitates a backward running reverb, with a long
rising "tail" ending abruptly (followed, optionally, by the "dry" source mixed by Dly Lvl). Once again, the number
of peaks and the sharpness are variable.
The usual Wet/Dry and Output Gain controls are provided.
Parameters:
PAGE 1
Wet/Dry 0 to 100%wet
Fdbk Lvl 0 to 100%
HF Damping 16 to 25088 Hz
PAGE 2
Dly Lvl 0 to 100%
Dly Length 300 to 3000 ms
PAGE 3
Early Bass -15 to 15 dB
Mid Bass -15 to 15 dB
Late Bass -15 to 15 dB
Wet/Dry
Out Gain
Fdbk Lvl
HF Damping
Dly Lvl
Dly Length
Out Gain
Rvb Env
Rvb Length
Early Damp
Mid Damp
Late Damp
Wet/Dry sets the relative amount of wet signal and dry signal. The wet signal consists of
the reverb itself (stereo) and the delayed mono signal arriving after the reverb has ended
(simulating the dry source in the reverse reverb sequence). The amount of the delayed
signal mixed to the Wet signal is separately adjustable with the Dly Lvl control. The Dry
signal is the stereo input signal.
This controls the level of the output mix, wet and dry, sent back into KDFX.
This controls the feedback gain of the separate (mono) delay tap. A high value
contributes a long repeating echo character to the reverb sound.
HF Damping adjusts a lowpass Þlter in the late delay tap feedback path so that high
frequencies die away more quickly than mid and low frequencies.
This adjusts the level of the separate (mono) delay tap used to simulate the dry source of
a reverse reverb effect. This same tap is used for feedback.
Sets the length (in milliseconds), of the separate (mono) delay tap used to simulate the
dry source of a reverse reverb effect. This same tap is used for feedback.
FXAlg #15: Finite Verb
Off, -79.0 to 24.0 dB
REV R1S1
300 to 3000 ms
16 to 25088 Hz
16 to 25088 Hz
16 to 25088 Hz
Algorithm Reference-31