to your cell phone is listeing to your tv... I just KNEW IT

companies have figured out how to use inaudible sounds to establish links between devices.

Here’s how software from SilverPush, a leading provider of “audio beacons,” works: When you visit a website that uses SilverPush tracking technology, the site causes your device to emit an inaudible ultrasonic sound. If any other devices you’ve got lying around—a laptop, a phone, a tablet—has an app installed that includes SilverPush code, it’s listening for that sound. If it hears it, SilverPush knows that the two devices are close to one another and, presumably, belong to the same person.

More recently, SilverPush expanded into television advertising: Certain TV commercials include an ultrasonic audio beacon. Any nearby devices running SilverPush software will be listening for the beacon—if a device hears it, it records the match, allowing the company to figure out what ads users watch and for how long, and add that information to the user’s profile.

so far I am unable to find out WHAT software has this imbeded in it

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Elessar · 26-30, M

My old crappy TV speakers lower >20k sounds into the audible spectrum, therefore I know perfectly which channels use that kind of stuff and avoid them like the plague because they make my head explode with that ringing noise.

plaguewatcher · M

@Elessar i too, use older tech, to avoid many of these pitfalls
BTW an old top loading VCR will record ANY vid stream cant even SEE the digital filters.

Elessar · 26-30, M

@plaguewatcher Technically, independently from the tech generation one uses, one would just need to filter out sounds <20Hz and >20kHz, either in software/decoding or even by installing a filter in the speaker wiring. At least against this very specific thing.

plaguewatcher · M

@Elessar you seem,, educated, in these matters.
any hints on how i can run a volume compressor for all of my audio /video streams?
short of buying a rackmount, and re directing all my cables

Elessar · 26-30, M

@plaguewatcher Not really, I studied some basic electronics but that's it. I'm a software engineer, that assumes (but doesn't trust) the underlying hardware wouldn't kill him 😬

plaguewatcher · M

@Elessar i am told there is a software way, to make a compressor, there is one on VLC my fave p[platform for media.

here is the pitch...

you like watching stuff,, in this scene, they are whispering, and you must raise the volume. THEN there is a sudden car crash and you have to lower the volume.

with an audio compressor hard tech or software, you set a lowest volume lower than this and it raises the volume for you

and an upper. higher than this and it lowers the volume for you.
so whispers get Bumped, and explosions get reduced.

just my dream,

Elessar · 26-30, M

@plaguewatcher Well yes, I'm assuming it sorts like works like an equalizer. If the source of the stream (or even better, the audio output) is out of the TV, it shouldn't be hard to put something like a raspberry PI with an audio compressor in the middle.