[FFmpeg-user] Compare quality of 2 audio files (was: Conversion wav -> mp3 -> wav)

Maik Waschfeld Maik.Waschfeld at Maik-Waschfeld.de
Sat Jun 24 13:35:22 EEST 2017

Hi Rodolfo,

Should I have to mention, that it’s not recommended to work on the original files?
Copy them within the Finder or your desktop of choice, so Audacity can manipulate the files, as it likes..

> Am 24.06.2017 um 09:22 schrieb Rodolfo Medina <rodolfo.medina at gmail.com>:
>  In this case, I import file1.mp3, I
> invert it, then I import file2.mp3: the game does not succeed: what I hear is
> not the difference between them - as it is when file2.mp3 = file1.mp3 -; what I
> hear seems rather to be the sum of the two... 

That’s strange!

As playing two files at the same time, technically is a summing-function, if the result is louder than the single pieces, the invert didn’t work.
Maybe one of the files was already inverted, before you got it.
Just invert on one of the tracks again.

Essential to the process is too, that both tracks sync exactly.
So when you manually sync the beginning, do they still sync-match at or near the end of the file?
You can and should zoom in on the waveform to do the syncing and checking.

If they don’t sync-match completely, they are not identical, source-wise.

> I wish a tool that detect the differences
> from files with different origines, sources and respective histories...  Is
> that possibile?

I’m not aware of an application to do this job, automatically.

With kindest regards…
…Maik Waschfeld

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