Nope, ISO Mp3s only supports upto 2 channels.

Is there any mp3 DECODER which supports surround, even if an encoder can enconde in surround?

If there is, its not an MP3 decoder, since mp3 cannot do surround. I think someone made an mp3-surround format a while ago though.

The only one I know of is Fraunhofer's mp3surround encoder and corresponding decoder.

http://www.all4mp3.com/tools/sw_fhg_cl.html

mp3 surround winamp plugin
http://www.all4mp3.com/tools/sw_fhg_demo.html

CLI Win32/Win64/MacOSX/Linux32/Linux64 Encoder 1.4 and Decoder 1.3
http://www.all4mp3.com/tools/sw_fhg_cl.html

also...
mp3 Surround Detect
Free Utility to Detect if a file with a .mp3 extension is an mp3 Surround file. (win32 and Linux32)

mp3surround Technical Information
mp3Surround - Multi-channel MP3 audio coding white papers (pdf file)

These two downloads are available at http://www.all4mp3.com/dev/

I never tried the winamp plugin, i'm still trying to transcode a 3hr AC3 file to wav then to MP3Surround via dbpoweramp!

You can do it in one step with foobar2000, foo_ac3 and mp3sencoder.exe. By the way, the latest DivX player supports mp3surround:
http://labs.divx.com/node/44

Test the MP3 Surround Winamp Plug-in.
It has the best quality.
Just test...

OK, just tested and it disables built-in mp3 decoder for all files, not only mp3surround. ID3 support is not the best, unfortunately. No gapless playback with LAME-encoded files, and I doubt it supports "Original File Length Feature" either.

You can contact: amm_info@iis.fraunhofer.de about MP3 Surround Winamp Plug-in.

Silver Wave: Sorry, but i can't tag you in any other way than "fraunhofer zealot".

Whenever your answers might be correct and/or interesting to other people, you tend to put them as the best.
What's the sense in saying a decoder "has the best quality"? Most decoders nowadays decode almost in the same way the mp3 data, safe for roundings. Mp3surround, being an extension (afaik not yet standarized) not being decodeable by other decoders does not classify it as "better".

That was a blatant TOS #8 violation, actually. Silver Wave is more than just a "zealot"; Silver Wave is likely a plant and most likely getting paid for these useless posts. IMO, this person should be banned.

Ok, forget "has the best quality".
I give up...

As with the last suspected guerrilla marketer we had here (the originator of this thread, actually), the Penny-Arcade post from back-when is particularly useful.

http://www.penny-arcade.com/news/show/21589
http://en.wikipedia.org/wiki/Undercover_marketing

"... 50 identities on as many forums as I could muster (they wanted 100 eventually), with a goal of 5 posts an hour."

Too bad for the next part:
"The posts had to be well thought out, and the idea was that I was to establish multiple identities with a history on the forums, so that when the timing was right a well written but subtly placed marketing post could be finessed in. And regular visitors would recognize the post as coming from a long time poster."

i pick up lame ,it's free and highest-quality MP3 files for bitrates greater or equal to 128 kbit/s

Care to present any proof of this? In particular the part about "highest quality for bitrates greater than 128".
Preferably, the proof in the form of ABC/HR or other double-blind and statistically significant comparisons on a wide variety of music samples.

P.S. I don't really expect any reply because I think "kevin21" is a spam bot.

Yes, it can. There's the multichannel extension in MPEG-2.
The stuff that FhG is doing no (MP3Surround) is something different, though.

go my way ,let others say.

Maybe kevin21 should duke it out with SpasV...

http://www.hydrogenaudio.org/forums/index....mp;#entry511563

Alright, if you are not a spam bot, I apologize.
(Although I'm not entirely convinced yet. Your signature is, sort of, giving away.)

LAME is better.
But if you still feel uncertain, FLAC might be better :-)

More info about mp3sEncoder:

The command line encoder is only for evaluation purposes. It
is not a real end-user product/tool. Therefore you can't set a lot of
parameters. Only bitrate is changeable and through different input types
(mono, stereo, surround)

That is not a smart way of bumping thread.

If you really do love FhG mp3 encoder, or would like to promote it, then there are some things you can do that forum members will really appreciate:

- an ABX test against other encoders (e.g., LAME) at certain bitrates. It is not that difficult. During ABX test you will have to determine if it is an FhG mp3 file or an original WAV. If you can't determine, then FhG encoder performs very well. See here: Listening tests. Also, if you have troubles setting up your own ABX test, feel free to post questions here.

- feedback, experience, other knowledge you gain from using your favourite encoder (though, don't post dumps from command line help, as you did in the previous post).

Is there any new listening test: Fraunhofer IIS mp3surround v1.4 & LAME 3.98 beta 8 128/160KBit CBR S-Stereo available?

Why would anyone go to the bother of doing a listening test and then cripple LAME by using the inferior S-Stereo mode, let alone using a beta version, not to mention using cbr instead of vbr?

If you are after CBR simple stereo 128k then lame is the worst and slowest option. , lame: vbr > j stereo > slower > higher quality. X mp3 codec: cbr > s stereo > faster > lower quality.

http://www.adobeforums.com/webx/.3c058942/0


Durin
The file loses the original, true stereo signal when using "Joint Stereo." This is true. Formats that support Joint Stereo require the player to recreate the original stereo signal from the Joint Stereo data. Some codecs, such as FLAC, do this mathematically perfect so that the resulting audio is lossless. Others, such as MP3, recreate an approximation of the stereo signal that sounds good enough, but is not an exact reproduction.

When converting to another format, I believe it depends on the application performing the conversion. With Audition, when you open ANY file, internally we convert it to an uncompressed 32-bit WAV. This includes converting the Joint Stereo signal into standard Stereo data. As long as the original file was encoded well, exporting to a different format using Joint Stereo should only modify the stereo signal within the limitations provided by the format itself.

Durin is Quality Engineer - Adobe Audio Applications

Do a little searching here at HA and you will discover that that is total nonsense.

FYI, Sina was banned from this site for being a complete idiot.

...as was the guy who started this thread.

The $20,000 question is whether they are in fact the same person. There's a pretty good chance that they are.

What do you mean?
Durin is wrong?
IDK what should I do.

...and stereo mode is magically capable of an exact reproduction???

Eeeaaa...
You mean his illiterate?

Read the List of recommended LAME settings. It will tell you everything you need to know.

Thanks.

http://wiki.hydrogenaudio.org/index.php?title=Joint_stereo