Echo is very stylish right now. It's the new black.
Seriously: You probably have DSP (digital signal processing) software that
can 'customize' your sound. In addition to the echo effect, you might be
able to make music sound like it's being played in a stadium or a concert
hall, etc. DSP software typically comes with a sound card.
Your DSP software may be adjustable directly from the keyboard, i.e., if you
hit the right combination of keys you get different types of sound.
Your job is to find your sound card's software and look for the adjustment
that will change your sound back to normal. The software probably has some
type of Help manual.
