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Google is embedding inaudible watermarks right into its AI generated music
(www.theverge.com)
This is a most excellent place for technology news and articles.
Also this isn't new by any stretch... Aphex Twin would like a word
Well, encoding stuff in the spectrogram isn't new, sure. But encoding stuff into an audio file that is inaudible but robust to incidental modifications to the file is much harder. Aphex Twin's stuff is audible!
I don't know what frequencies are annoying for dogs but I'm guessing it's above 24kHz so no sound file or sound system is going to be able to store or produce it anyway.
There will certainly be some way to get rid of the watermark. But it might nevertheless persist through common filters.