"void" sound in down speaker

[Alruse]

Hey guys, there's a way to know if my speaker it's broken or something like that?

Sometimes I heard a little void/gap in some sounds when playing or watching videos 

On ROG phone 8 (not pro)

Build version: .327

Thanks in advance 

[Eqram_Slayerz]

This happen to me when im newly buy this phone , a couple of update make it disappears , if you're on latest version already then giv it a couple of system update in the future then u see if it get rid of that problem