Spectrum display strange behaviour

I've noticed that this feature is always showing activity when no music is being played. It's supposed that this display is in real time and not a beautiful effect... so when no sound is emitted it should be flat.

That activity is related with the hiss some users said to listen in Meizu players?... like in thread Hissing with EP630 M6 vs. M3 question

Is it an uncontrolled energy that is delivering the player and which is producing other problems inside the player?... like the infamous stuttering.

M6SL owners... does it happens in your player?

I would like to know more of this

I find if I start the player and go to it without pressing play it is inactive.
If I select and play a single track once the track finishes it becomes inactive.
If I pause a track then it also pauses the only activity is the topmost bar which seems to bounce up once it comes into contact with the spectrum. Personally I think the bounce is what it is designed to do in normal play and is not actually registering any audio activity.

Indeed... it's as you said...
the bouncing when paused seems to show that *pause*... :D
thanks madman.