Orinj has several types of delay effects: regular delay, echo, chorus, bass chorus, bouncing echo, and reverb.
The Orinj regular delay takes the incoming signal and repeats it once with a certain delay in time and with a change in amplitude. The output of this effect is the combined original signal and the new repeated signal. The original signal is called the "dry" signal. The repeated signal is called the "wet" signal. The amount of time delay between the two is the "delay". The change in amplitude between the two signals is called the "decay" as the repeated signal usually has lower amplitude than the original one. The decay is also the difference between the dry and wet signal and can also be called the "dry / wet mix" of the delay effect.