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Is there a program that verify the quality of lossless files?

post #1 of 24
9/27/08 at 5:38pm
Thread Starter 
Is there a program that verify the quality of lossless files such as Flac , Apple Lossless?
How can I check that ithey are real lossless?
Ive read somewhere some lossy files like mp3 can be converted to Flac.

Please advise.

Sorry for my porr English
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post #2 of 24
9/27/08 at 6:16pm
Well, its been proven thousand of times that lossless audio files (FLAC, Apple Lossless, WavPack, etc.) are indeed lossless. Meaning that the source audio data can be restored to its original state, without any loss at all.

The state of the source audio data is another issue though... As it may have been previously encoded and decoded with a lossy audio codec (like MP3, AAC, Vorbis, ...).
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post #3 of 24
9/28/08 at 12:44am
I think he is talking about people faking lossless files by upconverting lossy mp3 into the flac format.
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post #4 of 24
9/28/08 at 1:19am
I don't mean to be rude, but unless you downloaded the songs illegally, why would you need such a program?
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post #5 of 24
9/28/08 at 2:09am
Google for AudioChecker.
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post #6 of 24
9/28/08 at 3:04am
See.... why most of people on Head-fi go for Lossless is because they can tell the difference between mp3 & lossless.

even if its converted from mp3 to FLAC ...many can notice its sounding bad.

If u cant even tell that then u dont need Lossless.


Illegally downloaded Songs are not meant for quality... if u want quality then just use those Illegal songs to get an idea.

and then go to store and buy the CD.
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post #7 of 24
9/28/08 at 3:17am
Quote:
Originally Posted by Nocturnal310 View Post
See.... why most of people on Head-fi go for Lossless is because they can tell the difference between mp3 & lossless.

even if its converted from mp3 to FLAC ...many can notice its sounding bad.

If u cant even tell that then u dont need Lossless.


Illegally downloaded Songs are not meant for quality... if u want quality then just use those Illegal songs to get an idea.

and then go to store and buy the CD.



I don't agree, not all illegally downloaded Songs sound bad, it depends where you get the songs from.
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post #8 of 24
9/28/08 at 3:48am
Thread Starter 
Quote:
Originally Posted by JamesL View Post
I don't mean to be rude, but unless you downloaded the songs illegally, why would you need such a program?
I usually buy cds , but some cds especially not so popular or very old ould not be found in my country so I download them.

I'm just curious about the download files.
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post #9 of 24
9/28/08 at 3:50am
Quote:
Originally Posted by st4r0c3an View Post
I think he is talking about people faking lossless files by upconverting lossy mp3 into the flac format.
You're probably right.
In that case the OP might want to give Tau Analyzer a try. If he/she use MS Windows that is...
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post #10 of 24
9/28/08 at 11:52am
and for osx ?
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post #11 of 24
9/28/08 at 1:23pm
Quote:
Originally Posted by freakmax View Post
Is there a program that verify the quality of lossless files such as Flac , Apple Lossless?
How can I check that ithey are real lossless?
Why would you need to check? They are. Else, if you really need to compare you need the WAVs.

Quote:
Ive read somewhere some lossy files like mp3 can be converted to Flac.
They can but you'll not recover what has been lost.
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post #12 of 24
9/28/08 at 2:01pm
Quote:
Originally Posted by [L]es View Post
and for osx ?
The best one IMO is MAX.

I am working with it over the last 10 Month. Here a short statement from their webside:

"Max is an application for creating high-quality audio files in various formats, from compact discs or files.
When extracting audio from compact discs, Max offers the maximum in flexibility to ensure the true sound of your CD is faithfully extracted.
For pristine discs, Max offers a high-speed ripper with no error correction.
For damaged discs, Max can either use its built-in comparison ripper (for drives that cache audio) or the error-correcting power of paranoia."

And the paranoia error-correction is the main advantage over all other programms for OSX.
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post #13 of 24
9/28/08 at 3:04pm
Quote:
Originally Posted by dvb-projekt View Post
The best one IMO is MAX.
Max don't allow us to check if the input audio file have been previously encoded using a lossy codec.

@[L]es. I have never seen a similar application for Mac OS X. So if someone else don't know anything I don't, then you are out of a native solution.
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post #14 of 24
9/29/08 at 2:06pm
Quote:
Originally Posted by freakmax View Post
Is there a program that verify the quality of lossless files such as Flac , Apple Lossless?
How can I check that ithey are real lossless?
Ive read somewhere some lossy files like mp3 can be converted to Flac.

Please advise.

Sorry for my porr English
Download a file to a folder on a hard drive, then go to this folder & open it. Move you're cursor so that the arrow will give you a box with the file info in it . It will say something like flac.file,wma lossless or whatever & see what the Kbps number is for the file. Each codec has a parameter range (***) kbps-(***)kbps . If the files have a kbps number that is somewhere below the stated range for the particular codec it's not a lossless file. Hope this helped
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post #15 of 24
9/30/08 at 4:04pm
Quote:
Originally Posted by japc View Post
Why would you need to check? They are. Else, if you really need to compare you need the WAVs.



They can but you'll not recover what has been lost.
You miss the point.
You can buy lossless music from some stores (especially in the electronic music genre). Labels provide WAVs to the store that sell them as is and encode it to other format and sell those as well. There is some not very scrupulous label that could supply a mp3 converted to WAV to the store.
There are some programs (like Audiochecker - Download) that can analyze the audio and tell if it's likely to be lossy or not. It's not infaillible though.
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