Weird thing about review of audio here....

[ryoohki]

Ok let's clear things first and foremost.

1 - STUDIO don't decide the bitrate of a TrueHD Track/DTS HD Track (a lot of time DTS track are higher because they are 24bits). This Bitrate is VARIABLE and is calculated on the compression side. When they run all the 6 or 8 track to the compressor, it loselessly compress the date. The more complex is the WaveBand, the less it compress. If you have a movie with a LOT of sound allways in a speaker, you gonna have a bitrate of 3-4, if you have almost only sound in the front (like a lot of movie MONO to 5.1) you gonna end up with 1.5-2.5mbits at most.

Other thing influence that, the Bits. If it's 16bits or 24bits. 16bits compress better than 24

Because i see the review of Full Metal Alcheimist complain that not enought bitrate was given to the japanese track.

well they can't reallly do nothing about it. If you're master is crappely done (mixed in surround in wierds ways) you gonna end up with a smaller file becase the CODEC IS DOING HIS JOB!

If you have a great experience with FLAC codec on PC you'll understand all this and how a Calm and relax album end up being 300meg(off 600 originally) at 650kbs/sec (example) while than other is busy all the song and you end up at 500meg (of 600) with 1mbits bitrate