How does a DJ do this?

[Alesso]

Hello everyone! I have listened to many sets and i find often that DJs do this?

What is that effect? It sounds really cool!!!!!! Please help!!!!!

Thanks!!

[Alesso]

When he lowers the volume or something idk how to describe it thanks.

[russell]

that's a low pass filter.

[ThatPartyGuy]

^

or a equipment malfunction lel

[Alesso]

Ah okay thank you very much. Do you know any online dj turntables that can do that?

Thanks

[Mitch]

What do you mean by online?

[Alesso]

Like an app instead of using the real thing. Something like a simulator

[ThatPartyGuy]

Virtual DJ, serato dj intro, Traktor are good programs

[BitMaestro]

Low pass filters can be found on some mixers.

Numark DXM06 and Pioneer's DJM 350 come to my mind.

[BeatLeSS]

A lot of the higher end mixers have separate high/low pass filters.. In Pioneers it is one of the "Colour FX". In DJ programs it's called filter. In production it could be known as a technique of EQ Sweeping.