CV 163, Reverb Delay Time This CV sets the overall Reverb Delay time from 0 to 64 milliseconds. CV 163 may be set anywhere between 0 (zero delay) to 255 (maximum delay) and the corresponding delay time may be calculated as:
Delay time = CV 163 X 0.25mS
A longer delay time corresponds to a greater distance between the sound source and the reflecting surfaces and will generally result in an increased level of reverb.
CV 164, Reverb Feedback Level This CV specifies the percentage of the Reverb’s output that is mixed back into its input and creates the effect of multiple sound reflections each diminishing in amplitude over time. CV 164 may be set to any value between 0 and 255 where 0 = no feedback and 255 = 100% feedback.
Caution: High feedback settings (> 200) should be avoided as they can result in very high audio levels and can potentially damage miniature speakers. Adjust this CV starting with a low initial value and increase in small steps.
Reverb Mixer The Reverb mixer allows you to apply the reverb effect to only the desired sound effect or effects. There are four reverb inputs each with a corresponding Reverb Send Level CV that controls the percentage of the original audio level that is to be mixed into the Reverb. Each send level may be set between 0 and 255 where 0 = Minimum level (0%) and 255 = Maximum level (100%).
The Reverb Send Levels are each pre-assigned to the first four channels of the primary mixer channel as follows:
CV 169, Whistle Reverb Send Level CV 170, Bell Reverb Send Level CV 171, Exhaust Reverb Send Level CV 172, Air Pump Reverb Send Level
The Reverb is most effectively used with the Whistle and Exhaust sound effects. Some whistles have a certain amount of reverb intrinsically built in as part of the original recording and may not noticeably respond to any additional reverb added.
Setting up the Reverb Setting up the reverb involves a bit of trial and error and is best done while the sounds are playing using operations mode programming to make the adjustments.
Tsunami Steam Sound User’s Guide