Automatically Audit Lossless Music Files with Aucdetect (Or Another Equivalent).
The idea would be to provide another library auditing feature which would use aucdetect or another trusted lossless verification tool for detecting lossy sources which have been simply re-encoded into WAV, FLAC, etc.
This problem is more typical when buying CD's as it's not clear if the CD contains the actual studio PCM audio compressed to the CD Standard, or if MP3's were just re-encoded into the CD Audio standard.
For Reference:
http://tausoft.org/wiki/True_Audio_Checker_Overview
http://losslessaudiochecker.com/
I can certainly understand if this idea is out of scope for Bliss's intentions, I just have not found a good way personally to audit my entire lossless library and be able to keep track of that audit.
It may need to be a feature thats only done on demand or on full scans that don't take advantage of the caching features, as it will definitely add time for you to use an external tool to analyse the waveforms of each file, even if the tool's algorithms were wrapped into a java dependency, etc.
I hope this idea isn't a repeat and is of some actual use.
Jason Schafer
shared this idea
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Jason Schafer
commented
Sorry I didn't reply sooner, I'm honestly not sure how much of it is an issue with professional/large record companies like Sony, etc. I have personally only have had one occurrence where I bought a cd from a smaller record label and received a CD which was not an audio CD but simply a data CD filled with mp3's (Which is a more obvious/different issue in and of itself).
I do not have specific information on it except on this case, I will probably use a tool like spek or aucdetect to see if there is an album that is in MP3.
I believe the issue is more common with "high-fidelity" online music stores, where these smaller more inexperienced record labels will just post whatever file they get, typically a 320 mp3, again this is speculation. If I find more info on the "commonality" of CD's being lossy transcoded I will let you know.
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Yeah, this is definitely something that could be done. I like the idea, goes well with other "integrity" ideas like checksumming etc.
How big a problem is CDs being sold that are lossy transcoded to PCM?
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Jason Schafer
commented
To also note: I could definitely write a batch script to automatically go through all the folders for me and generate the authenticity reports, but I like to think of Bliss as my go to for all of my musical auditing woes ;)
