Whats that sound at the end of the track that the DJs usually use?

Whats that sound at the end of the track that the DJs usually use?

Sometimes DJs stop one track completely and start another but don’t just let us feel if there was a pause. When the previous track stops, there’s a noise and then the new track starts. Is that echo?
It’s different than transition from one song to another during which there’s no pause and they just match the beats while mixing two songs.

Might be easier to identify if you include a link where we can hear it =). Might be an echo, reverb, sample, slow platter stop, there are quite a few ways to smooth out the end of a track.

12:45
21:03
26:30

Probably a reverb with a long tail/decay time (labeled as “size” in traktor) or delay or maybe a combination of both of them. But is just a guess, it would be better if you show an example.

Reverb/Delay combination in most cases, nothing too fancy.

Do we have these effects on a controller or only on softwares like Virtual DJ?

Hardwell DJs with Pioneer CDJs / DJM / Rekordbox / USB…but I imagine he is editing tracks in advance and applying studio effects (i.e. reverb / delay) at the point of the track he is looking to transition; as opposed attempting to create all of this stuff on the fly using standard DJ kit.

No EDM expert, but it sounds to me that he just mixes drop on drop and the “swooosh” element is a part of the production of the song that introduces the drop.

Other than that an echo / delay freeze with software or hardware fx is a commonly used technique by many DJs.