Re: Could Somebody Briefly Explain -
^ correct.
Most of the time, when you hear an effect like delay, reverb, flange, etc., you are actually hearing the dry signal mixed with the wet signal. The ratio of dry to wet determines how intense the effect is.
If you have (or have ever used) an amp with a reverb knob, that is essentially a dry/wet blend control. With the reverb on 0, you are hearing 100% dry (signal bypasses the reverb). With the reverb on 10, you are hearing 100% wet (signal is entirely through the reverb). At 5, you are hearing equal parts dry and wet. And so forth ...