I have two editions of Solti's Mahler 2nd Symphony
I would like to find out whether there two editions are identical (whether the Mangora Classical is just a license from DECCA).
I have downloaded @bwaslo 's audio difference maker, but I found no way to use it not with a microphone, but with two existing audio files. Can anyone point me in the right directions how to do this?
Thanks a lot
I would like to find out whether there two editions are identical (whether the Mangora Classical is just a license from DECCA).
I have downloaded @bwaslo 's audio difference maker, but I found no way to use it not with a microphone, but with two existing audio files. Can anyone point me in the right directions how to do this?
Thanks a lot
In post #6 of the thread you linked to, someone is using it to compare to .wav files with equal sample rates (and presumably with uniform quantization, like most .wav files). Do you use .wav files and are the sample rates equal?
I am getting the following error when trying to compare Track #4:
I will now try all the tracks individually and see what comes out
I will now try all the tracks individually and see what comes out
Even if they are coming from the same master, highly unlikely that they are not 'spiced up' differently.
What does DiffMaker say? Does it succeed to time-aling the samples?
Jan
What does DiffMaker say? Does it succeed to time-aling the samples?
Jan
I just tried using two identical tracks to do the comparison and I got the same error message. Maybe Audio Diff Maker struggles with Win 11? Or maybe there Is a maximum file size that ADM can handle?
You could try to compare two times the same track to see if it is disk size related.
If that works it is that they are too dissimilar.
Diagnose!
Jan
If that works it is that they are too dissimilar.
Diagnose!
Jan
This is exactly what I documented in my previous post.
I have now done the following to diagnose further:
- Set ADM to run in Windows 7 compatibility mode
- extract a 230MB piece of one of the tracks
- use this track both for Reference and Compared
Maybe @bwaslo could weigh in what might be happening here?
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I think I had done the extraction from audacity wrong (not extracting the selected piece, but the whole). I have now done the extraction correctly. The two files are now 1.69MB in size and the process runs through correctly.
The difference file is also stored correctly. The signal in the difference file seems fairly low level.
My conclusions from this:
The difference file is also stored correctly. The signal in the difference file seems fairly low level.
My conclusions from this:
- ADM does not work well with large files. Extract a one minute or so piece for analysis
- ADM does work under Windows 11. To be sure, add the Windows 7 compatibility flag to properties
- My two files are definitely not identical. The Mangora may be licensed from DECCA, but it has been changed vs the original DECCA 2007 remaster
Well done.
In hindsight, it was to be expected that they were different.
I don't think any mastering engineer would miss the chance to 'improve' on what he is given ;-)
Jan
In hindsight, it was to be expected that they were different.
I don't think any mastering engineer would miss the chance to 'improve' on what he is given ;-)
Jan
A likely issue is the length of your files. 179 seconds would be a GIGANTIC fft and ifft operation, and DiffMaker does scads of both during its processing. Try something more on the order of 10 seconds or so to see if that works out better.
Thanks Bill,
In Post #10 I had done the comparison with two 10" segments and ADM worked perfectly.
Thanks a lot for an excellent piece of software, that still works 15 years down the road
Sometimes companies simply license recordings by a major label for reissue, in which case they are usually identical (because the license does not include modification and because they do not have the resources to properly remaster). In case of the Manogra reissues they do indeed seem to "remaster" before republishing.
