Delay Effects

 

Delay You can use this function to create single echoes, as well as a number of other effects. Delays of 35 milliseconds (ms) or more will be perceived as discrete echoes, while those falling within the 35-15 ms range can be used to create a simple chorus or flanging effect. (These effects will not be as effective as the actual chorus or flanging effects, as the delay settings will be fixed and will not change over time).
Phaser The phaser achieves its distinctive sound by creating one or more notches in the frequency domain that eliminate sounds at the notch frequencies.
Flanger You can use this function to create a flanging effect by slightly delaying and phasing a signal at predetermined or random intervals. Flanging is created by mixing a signal with a slightly delayed copy of itself, where the length of the delay is constantly changing. It is actually one specific type of phasing (Phaser).
Reverb

You can use this function to set Reverb Effect that is used to simulate acoustic space, and consists of both early reflections, and echoes that are so closely spaced that they are perceived as a single decaying sound. Reverb is different from the basic echo function in that the delays are not repeated at regularly spaced intervals. Reverb function can create a wide range of high-quality reverb effects.

Chorus The Chorus differs from the Flanger in only a couple of ways. One difference is the amount of delay that is used. The delay times in a Chorus are larger than in a Flanger, usually somewhere between 20 ms. and 30 ms. (the Flanger's delay usually ranges from 1 ms. to 10 ms.) This longer delay doesn't produce the characteristic sweeping sound of the Flanger. The Chorus also differs from the Flanger in that there is generally no feedback used.