After reading a couple notes on other forums, I was curious to test…
I just used the batch converter in WaveLab to convert an .mp3 to FLAC (compression level 8). Original file was 4,960kb and the resulting file was 37,130kb.
Then I encoded the same .mp3 file with other tools, with the following results:
XRECODE 3: 21,747kb
So obviously the general-market tools are achieving a ~40% FLAC compression advantage over WaveLab’s FLAC compressor, using the exact same setting of FLAC level 8. Any ideas why?