From mono mp3 to stereo

I have few mp3 files that are only in mono, how do i convert them into stereo ?

Simple answer: You can´t do it. Sorry

You may be able to find software to simulate a stereo effect but it is the same as “How can I make a colour photo from a black and white negative?” …not really possible (actually it would be easier than mono --> stereo!)

I think it can be done, since we ain’t living in past and btw some popular black and white movies were made into color, and now anything can be done with computers. Just that you don’t know. Also if you can make a lossless file out of audio cd which is something like 128 kbps than i can make stereo out of mono. Anything can be made with computers, there ain’t anything that can’t be made.

I´m afraid you are talking about making something out of nothing… :doh:

BTW…where and how did you get these files…like, why are they mono?
Can you get hold of the originals again?..would make life much easier :iagree:

If you are so smart than tell me how can they make old mono music into digital stereo music. For example all 60ies music that wasn’t on cds and wasn’t on computers.

Nobody is being smart here…so keep the comments down and people will be as helpful as they can…

Anyway, you may find the answers to your question in this forum

They are discussing making “true stereo” from mono, although there is some skepticism about whether or not the original recording which was remastered was in fact really stereo and originally only released as mono on vinyl. Another poster discusses some “pro” software which he says can do it.

I think the problem lies in the definition of stereo…and can the sound be truely reseparated…how and where the sounds were produced has to be a sort-of guesswork in the end. The result of course will certainly sound like it´s stereo.

The other problem is the quality of the data you have. 128 Kbps isn´t a lot to play with.

BTW…what did you mean by saying MP3 is “lossless”?

I have “Incense and Peppermints” by the Strawberry Alarm Clock which was never recorded in Stereo. However, a friend gave me a compilation CD with a “stereo” Version of it. It is definately in Stereo, go figure.

Read VERY carefully… from Blaze Audio:

[B]Converting mono to stereo[/B]

"This used to be tricky, but no more! :cool: RipEditBurn now has [B]a built in mono to stereo converter[/B]. It’s easy to use- load in the file, click on Effects->Mono to Stereo and follow the instructions on the dialog box. In case you don’t have RipEditBurn yet, or if you want to understand exactly what’s going on, here’s the explanation of how to do it the hard way:

Do you have a mono file you want to convert to stereo? You can do that very easily by going to Edit->Change Format, clicking on Stereo, and the single mono track will be copied into [B]two stereo tracks[/B]. Unfortunately, your file will take up twice as much space on your hard drive but it won’t sound any better!

[B]There are some tricks that will help make the two channels sound more like they were recorded in stereo.[/B] This tutorial will show you how.

Often offsetting the starting times of the two tracks by a very small fraction of a second can be very effective. To do that, you will need to make two copies of the mono file. If there is silence at the beginning of the file, all you have to do is cut between 20 and 50 milliseconds from the beginning of one of the files using the techniques from the Editing Tutorial.

Otherwise, you will have to find between 20 and 50 milliseconds of silence and paste them at the beginning of one of the files. You can use the scale below the waveform display to measure the amount of time you are adding or deleting

Note that we zoomed into the beginning of the file using the zoom buttons before attempting to work on such a small section.

Now, convert both mono files into stereo files using Edit->Change Format. Make one file the right channel and the other the left channel using Edit->Mute and selecting the channel you want to mute. Then save both files and, with the cursor at the very beginning of one of the files, select Mix and then the name of the other two files. You will now have a stereo file with the two channels offset.

Once the file is in stereo, whether or not you offset the channels, you can add different effects to each channel- try adding EQ, with the left channel emphasizing the high frequencies and the right channel emphasizing the low frequencies.

Note that the effects dialog boxes each allow you to apply the effect to one channel or to both.

You can add just a bit of echo to each channel, making the echo different for each. Try combining different effects in different ways to get the best result for the particular track you are working with.

[B]These tricks won’t make a mono recording sound quite as good as audio originally recorded in stereo, but, with some experimentation, you can make it sound pretty darn good. Try it![/B]"

Well, there you go…[I]but is it really stereo[/I]. As someone else said, it´s like baking a cake, then trying to get the eggs back out of it! :doh:

But, if it sounds good…then be happy.

The colourization process involved a lot of human work, not just computers.

CD is 1411.2kbps. Lossless is usually around 900kbps. 128kbps would most likely be MP3, which is lossy, not lossless.

Patently absurd.

By paying expert sound engineers to remaster and remix the original master recordings.

They could have used some tricks to make an almost-stereo track, or else the song may have originally been released in mono but the master tapes still existed and were later mixed to create a stereo track rather than a mono one.

The best you can achieve with access to only a mono original, is to spatialize it - the name used for many tricks which attempt to spread it using phase shifting, delay and filters.

The effect can be tolerable on music with some depth, but can degrade intelligibility of vocals if pushed too far.

Some recordings were “electronically reprocessed for stereo effect when played on stereo equipment”, but a re-release remastered from studio multitracks would be far better.

When such electronic trickery was “cool” they usually mentioned it, now they might not.

deanimator: so you were browsing, now you ain’t 100% sure it can’t be done or what ?
No, thx, don’t need your help, since you know as much about converting from mono to stereo as me right now.
NRen2k5: i just said its on same level of quality as 128kbps, didn’t say it is 128kbps mp3, You say CD is 1411.2kbps, hmmm, thats new to me and belive me i heard much around this topic. Btw first lossles files arn’t around 10 years and cds were made before that. You don’t know all. Anything can be made with computers, just you have to know how. If you can make a program you also know how to hack it, belive me i know what im talking about, everything can be learned. What can’t be done ? I know you ppl tryed to convince me once on this forum that i can’t burn japanese, chinese characters or anything non english on cds, than how do japanese people burn is a mistery, maybe they don’t use cds. lol Anyway you people don’t know anything much about cds or logic, you just talk a lot and argue, argue, argue. I collected music long before you were born and now i have that same music on cds in stereo and i guess the people who made this possible were magicians with special tricks.
I know there are programs that claim that they can convert from mono to stereo before i posted here, i just though that you know something (sorry for people that do know something when they reply to post.)
Happy arguing with yourself.


I take it you have some literacy problems.

There´s nothing to add.

CD is not the same level of quality as 128kbps. If it was then there would be no point to encoding it to MP3 any higher than 128kbps.

I never said anything about the age of lossless compression.

Make some yew wood and some brain tanned leather, please.

Evidently you don’t know the meaning of the word “hack”, or much about programming for that matter.

Plenty of things, either because a computer is not at all suited for the job, or because of lack of research into the topic or because of lack of processing power on the machine being used for the job.

I’m sure you misunderstood them. Japanese people can burn because the characters are part of their local language setup on their machine.

Speak for yourself

No, just sound engineers with access to the masters (you know, the dozens of tapes of the vocals and different instruments that were mixed down to create the LP or CD you’re listening to?)

Go find yourself another bridge.

This is certainly not the way I like to see people talking to each other on this forum. :cop: Thread closed.