Screeching noise on mobile site

I have been hearing a high pitched screeching noise when having a game open on my tablet. It happens with all browsers that I try including Chrome, Opera and Silk. I am on a New Fire 8 HD. I have no addons  or extensions and have the browsers set to auto-update. please help, this is actually giving me a headache.

That is a really odd thing to have happen.  Does it happen with all games?  Have you verified that the game(s) that make the noise do not have a soundtrack running and that is what is causing the noise?  What happens if you create a blank game of your own and try entering that with your tablet?  Does it happen with Firefox?  (We only support Chrome and Firefox) Would you please carefully work through the first three steps of our guide to Solving Technical Issues ? Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome and Firefox. Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable all add-ons/extensions and anti-virus programs. Step 3: Clear your cache If none of the above succeeds, please thoroughly work through Step 4 . (Don't forget the complete Console Log!) Thank you!