Mp3 ---> 5.1 ?

[din4na]

Hello guys .

I have some question to ask,

I have some mp3s files, and they are all in stereo mode , but i want to convert them to 5.1 mode, because when i tried to burn em with Nero , and play in my Car, only 2 front speaker work , and i must convert them to 5.1 !

I tried with Besweet, HeadAc but they seem to be didnt work for me .

And the last thing is , how can i check if my Mp3 file or WAV file is in 5.1 mode ?

I mean, the program can report stereo , or 5.1 surround, when i check the file

Thanks guys ^^

[theDruid]

Do you have an unusual sound system in your car?

When you play a normal audio CD (which are stereo) in the car, do all the speakers work?

[bugster]

you can't have 5.1 on an Audio CD.

[theDruid]

Yeah - that's why I was wondering if this is a DVD-Audio sound system or something unusual like that...

[din4na]

Omg, thanks guys, i dont event know about Audio CD doesnt support 5.1

But, when i play normal CD on my car, yes, all speakers work without a problem ! my car is Mistubishi Jolie here : http://www.vinastarmotors.com.vn/JOLIESS.asp

And its only have Audio drive , this car's capacity = 8 seats , and its have 6 speakers, 2 front, 2 in the middle, and 2 in the back

And , if i want a 5.1 sound system in my car, i must upgrade my CD drive and the amplifier rite ?

But back to the question, how can i Encode mp3 stereo to 5.1 surround ?

[theDruid]

This is not the definitive answer, but have a look at this thread:

Converting Mono to Surround?

..as a similar argument applies.

In my opinion, although there are ways you can make a pseudo-surround track from source with fewer channels (mono/stereo), the results are often not really worth the time and effort.

In short, the information is just not there to do it.

The problem with your car speakers must be something else, but it's almost definitely nothing to do with surround.

cheers,
theDruid.

[offline]

you can't have 5.1 on an Audio CD.

This does not answer the OP's question but:

You can. Your sound system needs to support Dolby 5.1 or you
need a CD player and an additional 5.1 Dolby Digital receiver.
Any CD player works - only the receivers can cause trouble
if they don't auto switch to DD, like the Pioneer brand home theatre and car systems.

I have a cd player hooked up to the PCM/Analog input of
my home theatre AND I have a car CD/DVD which works
as well.

Most of my 5.1 CD's were done before I had a DVD burner
and I copied all of my 5.1 audio from movie soundtracks.

1. convert AC3 to AC3 .wav (various apps available to do this)
2. Resample multichannel .wav to 44.1Hkz (to suit redbook CDDA standard)
3. Burn wav as normal audio ( Nero works ok )
4. lower speaker volume and Play CD to test
5. If all you get is alot of "noise" then either you are not
converting correctly or your system does not automatically
switch to DD5.1 mode.

The easiet way to check if your system works with this is
to google up a multichannel Dolby Digital .wav file (called "wave")
and use that as a test track on your audio cd.

[offline]

din4na,

It sounds like your car system is not 5.1,
but rather a proprietary surround system.

If this is the case it works by changing a pure
stereo source into a virtual surround 'matrix'
to drive each speaker and create a surround
effect. This is similar to a system called prologic
II.

When an audio file is made into a mp3, information
from the original audio track is lost. Most of the
info lost is sound we can't hear but is necessary
for the processor in your car's amplifier to create
the surround 'matrix'.

While you can make mp3's ready for "surround",
the bitrate and encoding settings have to be
adjusted and for best results, downsampled from
a real 5.1 source.

Grab a CD, make a mp3 cd from it, but this time
run the bitrate as high as you can - 256kbs or higher.
Test that. It might sound better.

There are mp3 cd players out there that can
make 'virtual' surround but the quality of the
3d effect is reduced.

[din4na]

din4na,

It sounds like your car system is not 5.1,
but rather a proprietary surround system.

If this is the case it works by changing a pure
stereo source into a virtual surround 'matrix'
to drive each speaker and create a surround
effect. This is similar to a system called prologic
II.

When an audio file is made into a mp3, information
from the original audio track is lost. Most of the
info lost is sound we can't hear but is necessary
for the processor in your car's amplifier to create
the surround 'matrix'.

While you can make mp3's ready for "surround",
the bitrate and encoding settings have to be
adjusted and for best results, downsampled from
a real 5.1 source.

Grab a CD, make a mp3 cd from it, but this time
run the bitrate as high as you can - 256kbs or higher.
Test that. It might sound better.

There are mp3 cd players out there that can
make 'virtual' surround but the quality of the
3d effect is reduced.

Thanks offline and guys alots, this is exactly answer im looking for .

Yes, i only need virtual 5.1 only, because i ripped my mp3 file from CD Audio but i use VBR setting with them, and that's why my sound play sucky in my CD player .

But , any soft can create a virtual 5.1 sound stream ? just a simulation, you know 5.1 sound system have 2 front ,2 rear , 1 center speaker, and all i want is how to convert mp3 file to wav file that can play in both 2 front and 2 rear speaker ^^ , NO need surround and i know i cant have better sound quality of course , just play both in 4 speaker. Am i clear here )

And finally, which is the RIP program can RIP audio best ?

I used Jetaudio 6.0 but ...

[theDruid]

Use CDex to rip your audio CD tracks to mp3 - as far as I remember it comes with a version of LAME as the mp3 encoder.

I personally avoid VBR mp3, as I think it can cause problems, and the saving in terms of filesize is not worth it.

Surely you can turn the virtual surround setting off on your car sound system when you want to listen to a CD for which it doesn't do a good job - I would expect it then to output stereo using all speakers...

cheers,
theDruid.

[Cornucopia]

I would put the VBR encoding as the main culprit here. I actually would not expect a car player to even be able to play VBR at all. Hell, many of them don't even like CD-RW or CD-R discs!

Scott

[din4na]

I will post the result later, thanks guys ^^

[bloo]

maybe these can help, I haven't tried them yet but have heard good results.



http://www.iis.fraunhofer.de/amm/download/mp3surround/index.htm



http://www.orionstudios.com/CinematicMP3.html


bloo