[Five]

hmm... at the higher bitrates, it sure it more difficult to tell. This segment you've posted the pic of has hardly any audio in it at all. With lossy sources I can always seem to find the distinctive "blocks" in the SA when I zoom in, perhaps thanks in part to some settings I changed as per ssamadhi97's advice way back when. I'll post those recommended settings for CEP/Audition up here once I find them (or perhaps ssamadhi97 will drop by and post them before that).

Anyhow, it seems that every one of these "is this mp3" threads goes off into the discussion of "it's hard to tell anything for certain" which is a fact, but this doesn't stop us from mining the data that is available.

Now with the case in point, I have procured a ten second sample.

SA of the full 10 seconds: