![]() The lower bitrates eliminate so much that the sound becomes distorted. The "higher" the bitrate, the "less" that is removed - and consequently larger files that sound better. MP3 compression works by eliminating frequencies that are so close together (depending on the bitrate) that a frequency is eliminated from the overall spectrum. Bitrate doesn't matter because to any converter, the watermark looks like "necessary sound" well within the normal hearing range (though you can't conscientiously pick it out and you won't see it buried in a waveform). Especially if that watermark moves with the sound track when you attempt to convert it from one file type to another like changing an mp3 back to a wav file and a wav into an mp3. But trying to remove an inaudible digital watermark in the sound track is pretty impossible. It's a relatively easy process to change the graphics on any karaoke song, there have been tools to do exactly that for years. ![]() The media is not "serialized" but the product contained on it is. ![]() Not so with a CD-Audio disc, which may have been your point. If you burn a tagged MP3 to a data disc, you also burn the tag with it. Since the ID3 tag would not also be burn't, ![]()
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