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Comparator—differences between lossy file and pre-decoded version—why?, [was "Binary comparator problem"/TOS #6]
post Nov 2 2012, 09:03
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Group: Members
Posts: 778
Joined: 14-September 11
From: Szczecin, PL
Member No.: 93712


I got problem with official Binary Comparator component. There's something I can't understand. I decoded several AAC and MP3 files to PCM/WAV. Then I've made bit-comparison between encoded and decoded versions. And unfortunately component reports differences between them :/ . Why? When I compare WAV with FLAC made from this WAV everything works OK - both decoded streams are identical. Then why stream decoded directly from mp3/aac is different than decoded from wave made of this mp3/aac? I thought that I can use Binary Comparator to detect weather FLAC was made from iTunes AAC or MP3 with lowpass filtering disabled while encoding but it's impossible... Why?
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