2 channel to 5.1 surround sound

[hddvd2]

i want to know if i can take a 2 channel mp3 and make it into 5.1 channel surround sound audio. i found some guides but i want to know if the output will be in true surround sound, and not just play the same thing as the stereo sound but just out of 5 speakers. thanks a lot.

[yoda313]

Hi,

It won't be TRUE surround sound because it wasn't RECORDED that way. Your best bet would be to get a receiver that has DOLBY PRO LOGIC 2 which creates virtual 5.1 surround sound from any stereo source.

Though by all means try the guides you got out but don't expect perfection.....

Kevin

[edDV]

i want to know if i can take a 2 channel mp3 and make it into 5.1 channel surround sound audio. i found some guides but i want to know if the output will be in true surround sound, and not just play the same thing as the stereo sound but just out of 5 speakers. thanks a lot.

Your AC3 stereo receiver (or some computer audio cards) are full of Faux 5.1 conversions for 2 channel or 2 channel Pro-Logic sound.

To do it right, create your own Foley stage to recreate the surround tracks. Some fancy digital filtering may allow you to isolate dialog for the center channel and subwoofer can be extracted from Left and Right.

Have fun.

This may help
http://www.filmsound.org/foley/
http://www.audiotheater.com/foley.html
http://www.radiohour.wrek.org/links/uscolosfx.html

This really is fun stuff to try

[guns1inger]

MP# is possibly the worst format to use a source for this, as the compression algorythm used in MP3 muddies the stereo seperation to begin with. This means you don't have a clean stereo source to work with. You are better off keeping it 2 channel AC3 or even dropping in a Pro-logic flag.

[mikesbytes]

2 channel to 5.1 channels would also be very useful for home videos.

Apply a set of rules such as "as the sound gets louder, put more sound thru the back speakers" and you have a new way to entertain the grand parents.

[guns1inger]

What is the increasingly loud sound is a steam roller approaching from the front ?

[edDV]

Letterman is missing a goldmine with "stupid 5.1 audio tricks"

[Sillyname]

1.Take your boombox and put in the cassette of your audio.
2.Set up 5 microphones around a Sit-N-Spin.
3.Spin on Sit-N-Spin with boombox in hands whilst recording yer microphones to seperate tracks.
4.Encode.
5.Dazzle at your friends' amazement.

[TenaciousJP]

LOL, Sillyname.

You know, I've always wondered about something. If you have a track that's in 2.0 Pro-Logic, is there any way that you could transfer that information to a 5.1 track. You know, so that... for example, if a sound effect comes from the back speakers when played in Pro-Logic, that it would come from the back speakers in the 5.1 track. It may sound odd, but hopefully you get what I'm saying.

I'm interested because of a situation I used to have. A few years back, I had a DVD player that had a Dolby Digital decoder built in. I kept it in a small room with a 5-speaker stereo system. I would use the 5 analog/RCA out jacks on the DVD player to send the 5.1 to the 5 analog/RCA in jacks on the receiver. DVDs featuring a 5.1 track played beautifully, just as they were meant to. However, if there was a track in Pro-Logic, the DVD player would just output it as 2.0 stereo. So, I had wondered if there was a way to place the 2.0 surround information into a 5.1 track.

Anything like that possible?

[guns1inger]

If you have a true dolby prologic capable amp, then you will get seperation. However if it is only pro logic, you get a mono rear signal. If it is pro logic II you will get seperate rears and LFE in the signal. Theoretically, you could hook these up to your sound card one at a time and record the seperate channels as mono wav files, then mix them later as a 5.1 track.

I don't know of any software that can reverse a dolby prologic track, as the encoding is more analogue than digital.