Weird sound noise in headphones

When sound is playing there is no noise, but when any media : browser, music player… stops playing I hear weird noise, and after certain time I hear another high noise like “shah” when sound is not playing for certain time, it’s like a powersaving option that enable/disable headphones which causes that weird noise. This noise can be clearly heard twice : first when I open sound settings then second after closing sound settings and certain timeout passed.

Operating System: Manjaro Linux
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
Kernel Version: 5.4.150-1-MANJARO (64-bit)
Graphics Platform: X11