
Advanced Programming
Tsunami2 Electric User’s Guide
45
Setting Reverb
The reverb effect allows you to add a bit of reverb and presence to sound effects. CV 233
(Reverb Control Register) allows you to preset reverb for sound effects or select user-adjustable
reverb. CV 234 (Reverb Output Level), CV 235 (Reverb Delay Time), and CV 236 (Reverb
Feedback Gain Level) are used to set up reverb for the sound effects assigned to CVs 161-192
(Reverb Mixer).
Note:
Making big adjustments within reverb control CVs can easily result in unpleasant results.
We recommend you take your time and experiment with small changes first when configuring
this feature.
Reverb Control Register
CV 233 allows you to select reverb presets or user-
adjustable reverb. Setting CV 233 to reverb presets
will automatically adjust CVs 234-236.
User-adjustable reverb works by simulating the effect
created when a sound wave is heard with a delayed
version of the sound that has been reflected off
another hard surface. The decoder’s reverb is
designed to produce an effect due to early sound
reflections off a nearby surface such as a rock cut or
canyon wall. User-adjustable reverb provides three
controls plus a reverb mixer.
Reverb Output Level
CV 234 determines the amount of reverb signal that is mixed back with the original audio signal,
and may be set to a value from 0 (minimum) to 255 (maximum).
Reverb Delay Time
CV 235 determines the overall reverb delay time from 0 to 255 milliseconds. CV 235 may be set
to a value from 0 (zero delay) to 255 (maximum delay). The reverb delay time is calculated as:
Delay Time = CV 235 × 1ms
Longer delay times correspond to a greater distances between the sound source and the
reflecting surfaces and will generally result in increased reverb.
Reverb Feedback Level
This CV specifies the percentage of the reverb’s output that is mixed back into the input and
creates the effect of multiple sound reflections, each diminishing in amplitude over time. CV 236
may be set to a value from 0 to 255 to adjust the amount of feedback from 0% to 100%.
Note:
High feedback settings (greater than a value of 200) should be avoided, as they can
result in high audio levels that can potentially damage miniature speakers. Adjust this CV
starting with a low initial value and increase in small steps.
Reverb Mixer
Adjusting CVs 161-192 allows you to apply the reverb effect to desired sound effects. There are
reverb inputs for each sound effect that control the percentage of the original audio level that will
be mixed into the reverb. Each send level may be set from 0 to 255 to adjust the percentage
from 0% to 100%. CVs 161-192 are listed on the following page.
CV 233: Reverb Control Register
CV Value
Reverb Preset
0 Disabled
1
Short Reverb (default)
2 Medium
Reverb
3 Long
Reverb
4 Short
Echo
5 Long
Echo
6 Reserved
7 User-Adjustable