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stereo play in 4 channels (no explanations)
http://surroundbyus.com/sbu/viewtopic.php?f=13&t=114
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Author:  jorgeluiz [ Sat Dec 05, 2009 10:47 am ]
Post subject:  stereo play in 4 channels (no explanations)

hello boys.

i have round 1.3 Tera of stereo flacs, apes and others.
playing this stereo sources in pc with VLC to multichannel amplifier via RCA spam cables i get 2 channels, L & R(of course).

i have 2 albums where was ripped with EACopy and are in APE,
both play in 4 channels :shock: :?

i don't have a single explanation and only happens with this 2 albums...screenshots from VLC infos playing one of this albums...

Image

Image

Image

do you have any explanation? for more than i think, i can't explain.
play in perfect 4 channels and are not DTS-CDS, are really stereo sources!
...all kind of crazy things happens to me..i'm madness magnet :lol: (read my signature)

(this thread is completely off topic, can be removed without any advice by mods/admin, i'm only searching reasonables infos)

cheers!

Author:  Zeerround [ Sat Dec 05, 2009 11:45 am ]
Post subject:  Re: stereo play in 4 channels (no explanations)

Perhaps you have some setting in your sound card that is doing 2 to 4 ch. I don't know why it would only happen on two albums but the sound card set up is a logical place to check.

Author:  jorgeluiz [ Sat Dec 05, 2009 2:24 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

tests...
was checked sound card, is adjusted to 5.1 as always was.

pc is plugged via RCA(spam) to amplifier.

5.1 waves with differents tones in each channel play seperateds channels.(no redirections)

playing stereo cd from dvdrom(pc) play stereo.

playing stereo sources(waves, flacs, wavpack, apes) in a.audirion, sound forge, winamp and MPClassic HC play stereo!(have others player but no need more tests in this case)

playing waves and flacs in VLC play stereo.

playing apes in VLC(only) play in 4 channels where L=Ls and R=Rs!!
the sound is very clean! :shock:
checking VLC configurations all is default, i never changed anything!
as i posted the screenshots and all configurations/infos are stereo means 'mad player' ? :P

cheers!

Author:  Zeerround [ Sat Dec 05, 2009 4:37 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

so it's any ape in VLC, right?

Author:  jorgeluiz [ Sat Dec 05, 2009 4:57 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

incredible and obscure, i checked all adjusts in VLC:

i tested dozen stereo apes in VLC and just the same,
4 channels! (sounds good)
others formats play stereo.

with others players, all formats play stereo
and the same apes useds for tests in VLC play stereo too!

i never saw(or heard) about that before, Zee... :!:

cheers!

Author:  jorgeluiz [ Sun Dec 06, 2009 3:03 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

found explanations.

how to adjust VLC Media Player:
(mine is in portuguese, some words can be differents in english)
tools - preferences - show configuratons(click details),
audio - output module - directX
select speaker configuration to 5.1 !

only to remember details...
5.1 audiocard plugged via RCA cables to multichannel decoder/amplifier

don't have seperetions between fronts and back speakers, the seperetion is only between Left and Right as the source but in 4 channels!
LFE get the 'redirections' of low frequences too, then is 4.1!
sound's good with nice 'ambient' !

only happen playing stereo .apes, others lossless formats play stereo.(mp3 not tested)

cheers!

Author:  Zeerround [ Sun Dec 06, 2009 3:52 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

This would be the default setup for most car stereos.

Right channel goes to front and back right speakers, Left channel goes to front and back left speakers. Subwoofer gets lows.

Not really 4.1, as you only have the two discrete channels. 2+2.1?

I've often wondered why HT's don't have an option for this.

Author:  jorgeluiz [ Sun Dec 06, 2009 6:02 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

Zeerround wrote:
This would be the default setup for most car stereos.

Right channel goes to front and back right speakers, Left channel goes to front and back left speakers. Subwoofer gets lows.
yes!

Zeerround wrote:
Not really 4.1, as you only have the two discrete channels. 2+2.1?
exactly, i mean that have 4.1 channels but not 4 discrete channels.

Zeerround wrote:
I've often wondered why HT's don't have an option for this.
oh yes,cool... why not?
great idea Zee, i wish that some famous labels can read your idea, add this feature and put in the manual: 4.1 (2+2.1) idea by Zeerround in SurroundByUs.com ;)
who have the idea deserve credits too, all results came from ideas that are the starting point.

ah...more: some stereo flacs play in 2+2.1, others don't...i will try to find the differences between this flacs.
i'm hearing now Sgt.Peepers (needledrop) flac mono and play in 2+2.1 too :o
how? i don't know....lol, more mysterys to discover, back to 'blackboard'!

cheers!

Author:  Fan51 [ Sun Dec 06, 2009 7:16 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

There's a very similar discussion going on presently on the SurroundSound forum. Apparently, the feature you're asking for exists on some receivers (Onkyo, Denon) and is named "all speaker stereo". Some receivers simply have a "B" set of outputs that sends the left and right signals to the rears.

Author:  jorgeluiz [ Sun Dec 06, 2009 7:44 pm ]
Post subject:  Re: stereo play in 4 channels (no explanations)

you're right Fan51.
(i saw your and bob posts in SurroundSound by mail notification)

my Sony receiver have A.F.D Auto for automatic selection and some of 'preferencial' possibilities like PL II MS... NEO6 CIN...lots more and Multi ST..
this option play like you explained. (as i don't use i forgot this option)
using Multichannels IN, the options above don't work, you can't do changes as are really sepereteds inputs!

cheers!

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