MP3 to wav - the amount of information you let go

Hello!

We have scanned 1000 wav files large to 44100, 32-bit, stereo 500 discs vinil and audio cassettes. Then we cut them into smaller parts (songs units per person) and convert these parts directly to MP3 (44100, 16 bit, stereo) batch.

Now, we would like to have these units samller also in wav format (44100, 16 bit, stereo,), not only in mp3 format.

We have two options to:

1. to cut again and convert it to source original wav files (44100, 32-bit, stereo) to small wav files (44100, 16 bit, stereo).

2. If you want to convert to mp3 (44100, 16 bit, stereo) directly to wav in batch (44100, 16 bit, stereo).

We would like to know how much information lose us if we choose the second option instead of the first - convert mp3 to wav? In this particular case, it is much faster and easier!

The main problem is that we cut wav files original (44100, 32-bit, stereo) in a number of smaller units (about 6,000 smaller units) and save the package in the process directly in mp3 format. If you have to cut them again to our original wav files and save them as wav (like mp3) it would take us a couple of weeks!

Thanks for the reply.

How you lose depends entirely on what rate the MP3 files have been encoded to. If they were musical and encoded files in 128 k MP3 then the loss will be noticeable by most people in a direct comparison. If you have been lucky enough to save them at 192 k or higher, then the differences will be less obvious.

If you want a rough idea of what you lose, it is essentially in the quieter parts which are 'hidden' by more strong adjacent sounds. What is happening is that the quieter sounds are stored at a lower resolution (fewer bits). This gives rise to what we call a 'coding gain", and this is the measure of what determines the final quality. It tends to give a quality "unreal" sort of sounds and is not only pleasant to listen to the very bottom of encoding rates.

If the goal of saving the original in the form of wav files was somehow an attempt to keep a copy of superior quality, which must have - then you have really a re-cutting choices; You have to do. In the contrary case, it there was absolutely no reason to do this exercise in the order that you did it in the first place, was there?

So despite the work, I see No point in doing so from MP3 files in any case, when you have 32-bit original which only require redividing and name.

Tags: Audition

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