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Mp3 in 5.1

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Old Jan 15, 2005, 08:05 AM   #1
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Mp3 in 5.1
http://www.pcmag.com/article2/0,1759...049TX1K0100488


I've read about this before of course, but I just thought I'd share the article with you guys. Can't wait to test my z-5300s with this new mp3
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Old Jan 15, 2005, 08:22 AM   #2
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Sounds cool but won't this increase file sizes? Also, I won't pay for a codec.
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Old Jan 15, 2005, 09:07 AM   #3
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System Specs

you also have to have the original content in 5.1 for it to work

and yes it would most likely be at least 3 times the size of a stereo track at the same bitrate. (2 channels vs 6 channels of audio)
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Old Jan 15, 2005, 10:08 AM   #4
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Cool! I'm goint to buy a new hard disk to store these mp3 files.
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Old Jan 15, 2005, 02:34 PM   #5
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System Specs

dj_stick: It probably won't be three times the size, since some channels (especially sub and center) can get by with lower bitrate without losing quality.

I have doubts about whether it will be worth using though, other than for compatibility. I tried converting some ac3s I demuxed directly from DVDs of mine to 5.1 oggs, and to get similar quality the file size ended up pretty much the same. The only downside is that I can't play ac3 files in Winamp.
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Old Jan 15, 2005, 07:17 PM Threadstarter Thread Starter   #6
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I don't plan on paying for a codec, thats what torrents are for...because I didn't pay for 90% of the mp3s so there wouldn't be much sense in that. As for the size difference I won't mind that at all, to me it's worth it.
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Old Jan 15, 2005, 07:21 PM   #7
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Yea, I was just about to say "Don't OGG's support 5.1?"

Apparantly someone beat me to it.
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Old Jan 15, 2005, 08:03 PM   #8
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i want it. i love music
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Old Jan 15, 2005, 11:22 PM   #9
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System Specs

Quote:
Originally Posted by Zelig
dj_stick: It probably won't be three times the size, since some channels (especially sub and center) can get by with lower bitrate without losing quality.
i was basing that assumption on CBR recordings. VBR might be different in this case.

As for listening to music in 5.1, it has to be recorded in 5.1 first… i can't see most artists recording in 5.1 in the next few years… but it's a good idea for operas, orchestras, game soundtracks aswell
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Old Jan 15, 2005, 11:34 PM   #10
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System Specs

Quote:
Originally Posted by dj_stick
As for listening to music in 5.1, it has to be recorded in 5.1 first… i can't see most artists recording in 5.1 in the next few years… but it's a good idea for operas, orchestras, game soundtracks aswell
Yeah, I really can't see it becoming much more popular than 5.1 ogg is currently.

Games: Easier to just record in stereo, and upmix ingame.
CDs: Only released in stereo.
SACDs: Can't be ripped.
DVD-Audio: Can't be ripped.
DVD-Video audio: Just as easy to leave in ac3 format or whatever.
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Old Jan 16, 2005, 01:24 AM   #11
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System Specs

as for the games comment, that's true, but upmixing ingame taxes the CPU a little, depending on the algorithm, so if they pre-upmix it before pressing the disc you don't get that wasted CPU usage… that's if game devs want surround sound in game
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Old Jan 16, 2005, 01:39 AM   #12
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System Specs

Quote:
Originally Posted by dj_stick
as for the games comment, that's true, but upmixing ingame taxes the CPU a little, depending on the algorithm, so if they pre-upmix it before pressing the disc you don't get that wasted CPU usage… that's if game devs want surround sound in game
Hmm, when I opened up some games to test this, I realized I don't have any games that do upmixing, or use surround sound for the music, it's all just in stereo...

Pre-upmixing would take quite a lot of space though, and I don't think a simple stereo x2/x3 upmix would take much cpu power. Some games, like UT, use oggs, which result in higher cpu usage anyway, if you have the music enabled...
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Old Jan 21, 2005, 09:58 PM   #13
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I got this download along time ago was also the free trial version but when i open the download i had the full package
also the mp3 does not sound good unless the original track was also 5.1
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