(2020-05-05, 03:07 PM)CSchmidlapp Wrote: [ -> ]For the record, in this particular case (which is perfect) the BD looks as though it uses the theatrical mix.
What movie did you compare in particular?
As stated in the other thread, when comparing the audio of the Cinema DTS with the Blu-ray counterpart, for these at least, the bass consistently sounds "thicker" on the Blu-ray:
Armageddon
Men in Black
Collateral
Hackers
With Gravity, which I recently synchronized, it's difficult to say as the mix is surprisingly quite different.
(2020-05-05, 03:07 PM)CSchmidlapp Wrote: [ -> ]The LFE channel needed no adjustment and matched.
Well, in the case of Men in Black, the effective LFE (which in the case of Cinema DTS is really a confusing term as there is none) levels differ:
Men in Black, first ~ 14 minutes (CDTS above, BD below)
Also a member here (who unfortunately isn't too keen on participating in any bigger discussion) was in contact with someone dealing with Cinema DTS professionally and that certain individual claimed the foobar plugin's decoding result to be wrong level-wise whereas the lack of any detail about what should be wrong in particular, doesn't exactly make things easier.
I compared the result from that person with the supposedly correct levels with the foobar result and indeed, the LFE is a bit higher in his, but somehow, the BD mix still has a stronger bass with my setup (which certainly is not a reference).
(2020-05-05, 03:07 PM)CSchmidlapp Wrote: [ -> ]The overall tone of the CDTS is 'walmer' though, with the BD version sounding more clear in the high end.
I think maybe this could be EQing on the BD's master, or most probably that it comes from a higher quality / lossless encode.
I'd point the "most probably" to the EQing and not any codec differences, as I consider ADPCM pretty much being transparent here, including AC3 and DTS at Blu-ray's core bitrates (and LaserDiscs with AC3 at only 384 kbps for 5.1 proves that the world doesn't quite end here either). But of course, the power of marketing can be quite strong and so anything but lossless and at least 192 kHz / 24 Bit is coming straight from hell.
Maybe borisanddoris can elaborate on that because having read several
articles and
discussions about bass management and channel levels in general, now I'm confused where the only 6dB difference comes into play depending on the movie release date if one is supposedly calibrated to 85dBSPL and the other to 91dBSPL as mentioned
here. Maybe I misunderstand something here as if all AVRs at home effectively apply a 10dB gain for the LFE, wouldn't be the bass of Cinema DTS tracks then be playing 4dB too high if 91dBSPL is the reference here and not 95dBSPL? Doesn't match my experience so we're back to what the foobar plugin does when setting the LFE reconstruction to "0dB".