🚀 go-pugleaf

      Heck, months back when someone asked how to prove that a red book CD had,
      or had not, been created from an mp3 source, nobody could suggest a means!




I must have missed that one - because you can do this with a natural venue recording quite easily by looking at the HF noise bands (as in Andrew Shetliffe's dodgy ATRAC recording - same basic idea). A linear recording wouldn't look like that at all. Even the faintest hint of this sort of banding indicates that a compressed format has been used. Other than that, it is pretty difficult, though.