>One could use these tones to 'detect' a commercial and avoid it, or strip out these tones entirely to promote operational security amongst devices.
Or one could layer superfluous erroneous tones into every stream to poison the dataset.
Or one could layer superfluous erroneous tones into every stream to poison the dataset.
I do not rely on metadata, nor do I use the usual time schedules for ad breaks.
I like this two-horned decision dropped in the broadcaster's lap.
Make a crowdsourced list of 'uuids' or whatever these tones are decoded as, and then just inject a constant stream of random ones into any audio signal. With 1% participation, could probably make advertiser dataset worthless.