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Lossy Audio Compression => AAC => AAC - Tech => Topic started by: Motivo on 2016-10-04 19:47:19

Title: [Need help please ] - Detecting wav's made from m4a (AAC)
Post by: Motivo on 2016-10-04 19:47:19
Can someone please tell me is there any software which can show me real difference regarding freq. between m4a and .wav files? I've just tried 'spectral frequency' on Audition, but there is no freq. difference between those two on same file. One is m4a other is wav and freq is the same on graph. I'm trying to delete m4a files previously converted to wav. Any suggestions?
Title: Re: [Need help please ] - Detecting wav's made from m4a (AAC)
Post by: sven_Bent on 2016-10-04 20:08:47
There is a program that can detect of a .wav file seeesm to be form orignal CD or from a lossy compressed source. but the name elludes me at  the momment

i would like to say the name was CDauct or something along that line. but googling it gave me nothing.
Title: Re: [Need help please ] - Detecting wav's made from m4a (AAC)
Post by: sven_Bent on 2016-10-04 20:12:57
gdi i found it

http://y-soft.org/English/products/auCDtect-Task-Manager/

You might wanna try to play with this
Title: Re: [Need help please ] - Detecting wav's made from m4a (AAC)
Post by: Motivo on 2016-10-04 20:41:15
Many thanks @sven_Bent , I just tried. Unfortunately it says CDDA 100% for AAC (LC) m4a files :(
Title: Re: [Need help please ] - Detecting wav's made from m4a (AAC)
Post by: saratoga on 2016-10-04 21:13:06
Many thanks @sven_Bent , I just tried. Unfortunately it says CDDA 100% for AAC (LC) m4a files :(

You won't find a reliable way to do this, although tools will sometimes catch transcoded files. 
Title: Re: [Need help please ] - Detecting wav's made from m4a (AAC)
Post by: adamjk on 2016-10-05 02:28:27
Many thanks @sven_Bent , I just tried. Unfortunately it says CDDA 100% for AAC (LC) m4a files :(
Try this:
http://losslessaudiochecker.com
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