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Not a perfect job. But a state of the art job! The relationship between watermarkers and lossy perceptual codecs is fundamentally adversarial - one side trying
by dTal 5y ago
Not a perfect job. But a state of the art job! The relationship between watermarkers and lossy perceptual codecs is fundamentally adversarial - one side trying to eliminate all inaudible information, the other trying to sneak inaudible information past it. And so much more research has been poured into lossy compression, that the watermarkers just can't win. Bear in mind also that the watermark needs to work with all lossy codecs, so the information must be considered salient by all of them. There's just no way to do this inaudibly.
- karmakaze 5y agoI doubt that this is where we are at today. We have higher fidelity transmission compared to a joint-stereo 128kbps mp3, which was probably already enough to carry imperceptible watermarks.