Buzzing Sound from speakers


Bachstelze

Member
Joined
Feb 13, 2012
Messages
56
I want to understand why the Speaker put out a low, quite tone which is hear able (for me). The high of the tone depends on the display content, but it does not depend on the display brightness.


http://bs.cyty.com/menschen/e-etzold/archiv/TV/test/testbild.htm


http://bs.cyty.com/menschen/e-etzold/archiv/TV/test/img/vert-lines.gif -> "loud" noise


http://bs.cyty.com/menschen/e-etzold/archiv/TV/test/img/horiz-lines.gif -> nothing


There is an other high, quite tone on the bottom of the Pandora which is noticeable on brightness settings low to max. On display off the sound is gone. I suspect here a voltage divider, but i am not that deep into electronics.
 
I think some pandoras emmit a low sound cant remember the full story.try the headphones you might not hear it there i think.
 
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