DJ sound effects alter music and add extra effects to it. Here are some examples from a wide range of possibilities: repeat, echo, pitch, filter.
Because it can help you fully individualize your DJ set. If you use effects the right way, you will be rewarded with the sight of the crowd's hands rising up in the air.
With the Music FX Live sound effect software you can control effects in real time, changing the sound as you watch the reaction of the crowd.