javascript - Detecting audio in third party online advertisements -

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is possible detect when online advertisement playing audio? in ideal world, through browser in real-time , send notification include dom information needed remove ad. in type of model, theoretically use clients (web visitors) test subjects. believe might far fetched, , need rely on smaller subset of users. i'm looking way this. have thought using speakers , microphone detect when sound playing, , how capture screenshot , dom information. please help. thank you.

in previous question, stated not possible.

edit:

no. best maybe able detect browser is or is not playing sound. if that, have difficulty detecting which tab or page creating sound. , if could, have difficulty detecting offending html. flash, javascript, or html 5's tag. , if all of this, ie surely (being pain is) not support of attempts complete objective.

bottom line: can't wanting do. need able query browser playing audio confident handle supported methods of playing sound in browser. afaik, no browsers support this, out of luck.


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