Echo effect in audio???

Is it possible to write something to add an echo effect to audio in realtime using AS? If so, how would I do it?

Any help would ease my aneurysm lol

if you make clever use of the AS soundObject, you would attach your sound to two soundobjects and have them playing at different times...

something like

mySound=new Sound();
myEcho=new Sound();


mySound.attachSound(linkedSound);
myEcho.attachSound(linkedSound);

mySound.start();
(...later: )
myEcho.start();

written from scratch so mind if the syntax isn't 100% properly done.