One of the most respectable streamers of Phasmopobia, Insym has uploaded a video recently and talked about if there is a specific sound for air ball ghost event at the last part of it.
Sorry Insym, I’m afraid you can’t do that and here’s a video evidence 😥
You can see a physically manifested ghost event played the same sound as the air ball ghost event you attached in your video. So, I don’t think you can instantly identify it by just hearing it.
Insym’s recent video:
https://www.youtube.com/watch?v=dOwDmKUWeA4
source
Well it's actually different cause with the air ball event there is no footsteps
Actually I do hear slight difference. (I mean I do have perfect pitch) but either way. Insyms “HSHHH” is slightly higher in pitch, whilst yours was normal