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PostPosted: Mon Jun 19, 2017 11:51 am 
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Will a WAV file converted from a WMA file have the same fidelity as a WAV file created directly from the same analogue source?
I accidentally created WMA files from a number of records using Sound Forge; and then converted them to WAV, rather than re-record directly to WAV.
Thx


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PostPosted: Mon Jun 19, 2017 12:45 pm 
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Did you use WMA (lossy) or WMA Lossless?

If the first, then no, the info is gone and converting back to WAV will not be bit-perfect.


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PostPosted: Mon Jun 19, 2017 1:33 pm 
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Yeah like Jared said, it'll depend on whether the WMA file is lossy or lossless. Once the data is gone it's gone.

Whether anyone can hear a difference will depend on the person. Some will, some won't :)


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PostPosted: Mon Jun 19, 2017 3:51 pm 
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Additionally, lossy WMA files are 16 bits only, so if you recorded at 24 bits (and why wouldn't you) and the conversion didn't involve adding dither, there might be some audible low level artefacts left behind.

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PostPosted: Mon Jun 19, 2017 5:14 pm 
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The Sound Forge menu doesn't specify lossy or lossless WMA 11
Files were less than 1/10 size of a WAV file, which is why I thought they might have been lossy. I deleted most of the original WMA files....will look for a couple that weren't deleted and check the Sound Forge User's Manual for more info about WMA11 format.


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PostPosted: Mon Jun 19, 2017 5:30 pm 
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1/10th is very lossy, but this doesn't rule out downsampling or wav bitrate reduction, which in my opinion, aren't as bad​ as the psychoacoustic reductions used in audio data compression....they are nonetheless, undesirable.

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PostPosted: Tue Jun 20, 2017 3:02 am 
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eddiel wrote:
Yeah like Jared said, it'll depend on whether the WMA file is lossy or lossless. Once the data is gone it's gone.

Whether anyone can hear a difference will depend on the person. Some will, some won't :)


... or a systems ability to resolve the difference. :D

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PostPosted: Tue Jun 20, 2017 7:13 am 
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rafcam wrote:
I deleted most of the original WMA files....will look for a couple that weren't deleted and check the Sound Forge User's Manual for more info about WMA11 format.
It's been years since I've used SF and at the time it didn't have full colour spectrograms of the kind one sees now. If yours does, open the wma (convert it to wav first, if needed) in the spectrogram view and look for black areas between the dynamic peaks, particularly up near the top frequencies. The black areas are data that has been removed.

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PostPosted: Tue Jun 20, 2017 11:30 am 
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.....will do!
Thanks everyone for your feedback.


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