What is the name of this audio transition??

[Xentinel]

Hey everyone. I'm new here to this forum. Hope you can help me out with this.

I know there a lot of types of cinematic audio transition like thud, swoosh. But I still can't find this type.

https://youtu.be/J6u2MRiYL3o
at
0:05
0:19
1:33

also, can let me know if there's free pack to get it. Thanks in advance

 

[Kim Welch]

Welcome to the forums. I think those are sounds you can find or create on a synth.