logo Sign In

A B C

This user has been banned.

User Group
Banned Members
Join date
11-Jun-2010
Last activity
25-Oct-2010
Posts
1,054

Post History

Post
#424297
Topic
Audio Topic: Stereo to Surround up-mixing
Time

Moth3r said:

More information on the upmixing process here:

http://originaltrilogy.com/forum/topic.cfm/Doctor-Ms-Stereo-to-51-Dolby-Prologic-II-Upmix-Guide/topic/11546/

 I surmise the default 20ms delay are corresponding to the stereo widening process... I would go easy on that if it is for classical music experience or so... As I said, it sucks the dynamic as far as I observed. But well, it is your laboratory now! ;)

 

Edit: the stereo widening filter I have at hand is the one from Nero Burning Rome, wich is convenient to check in real time the fx. You'll spot right away how it alters the EQs and then be able to compensate if needed. I'm not sure it is the same processing than the delay I just mentioned though. As it seems your search is for "audiophile" purposes you would won by testing separately such alternatives.

Have a nice time.

Post
#424184
Topic
Info: ¤ RETURN OF THE JEDI ¤ Score Restoration - another OPTIMUM SET ?...
Time

I don't think there are any good reasons. I'm sure there are enough masters (films etc...) to put a hand on these.

It's a little like the story of the "lost" master tapes from ESB falling in pieces (the 4-track sessions tapes) that make some around like SkyJedi -no harm meant- say that there's no hope to have better, wich I can't agree because... All the music is/must be still available through original 24-track tapes. The proof is that the last part of "Drawing the Battle Lines" was remixed from these for the SE whilst it's not on the original album. This one for other instance provides a bit from "Captives" (in "Betrayal at Bespin") wich is considered as an underscore part (usually underrated) at the end of "Departure Of Boba Fett".

Then I'm a little perplex when knowledgeable people come and say "the master tapes are lost" !

... Let me ask then: wich ones ???

'Hope this answers in a way.

Post
#424162
Topic
Audio Topic: Stereo to Surround up-mixing
Time

OK, I found it (I changed a couple of lines to be more clear):

My input, if it can help...

If you are melting sources and looks you can't have a perfect match, just make sure the waveform is not inverted from a source to another.

Another thought, concerning the kind of mixes you're all using around here, is that the wide stereo surely means to make a nice experience for all people who have special equipment... However I remixed (and downmixed) myself the "Asteroid Field" stereo and mono tracks from Star Wars Musical Journey and I can tell you Shawn Murhy's direct downmixed version sounded awful next to the revised final 2-track version I finally made - only Msycamore here has heard the result, though I didn't let him compare with the downmixed untouched version. What I had recovered showed the overall sonority of the RSO track (with a lower dynamic range though) but with compression artifacts they made for the DVD unfortunately totally revealed.

What I'd like to point out anyway is that the stereo widening for 5.1 experience sounds totally unatural to me as a 2-track stereo shape. To obtain the best version I could, close to any musical experience for Hi-Fi ect..., I had to narrow the stereo with a stereo widening filter: about 30% for the rear stereo, 70% for the front stereo channels (100% beeing no change) + of course re-equalised the two pairs of tracks + the main center channel. The main consequence that really stroke me listening to the result is how much you can restore the dynamic range when you give back a more natural stereo by narrowing it.

Now, if I had to upmix such a material I would try to give the wideness feeling through equalizations, and would perhaps even try to give the more relief as possible through two complementary EQ's, more bass-oriented for the front stereo, and highs for the rear... Don't know, but I guess. The streo widening may still be used, but with great moderation.

I strongly suspect this way of feeling and thinking the sound can make you reconsider the 5.1 phenomenon.

I'm not an audio "expert" though, technically speaking ;)...