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Lossy or Lossless? Please use this forum to post spectral and frequency analysis posts about shows you have your doubts about.

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  #1  
Old 2007-01-04, 04:11 PM
ustone ustone is offline
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MD or MP3

Hello,
can someone tell me if following its from MD or mp3..Original source is probably a
tape that was used for a broadcast...if there would be no blocks it could be a similiar encoding like

http://www.thetradersden.org/forums/...ad.php?t=30357

Please explain detailly why u think that's it from mp3 or not..i wanna understand..;-)

And: Can somebody explain what these thin vertical lines means that goes beyond 20 kHz?

Thanx
Uli
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  #2  
Old 2007-01-04, 04:34 PM
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paddington paddington is offline
please look after this bear
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83.17 GB/882.10 GB/10.61
 
Join Date: Jan 2005
Location: UK
Re: MD or MP3

looks like MP3 at about 128kbps
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  #3  
Old 2007-01-05, 12:37 PM
corsair corsair is offline
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Re: MD or MP3

Concurred...looks mp3.
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  #4  
Old 2007-01-17, 01:04 PM
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slewofboots slewofboots is offline
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Join Date: Aug 2006
Re: MD or MP3

ustone
clearly .mp3 because of the HUGE dropoff in frequency on the graph you provided at around 16kHz. This is the "classic" sign of there being .mp3 at some point in its ancestry.

Also, the spectral looks "chopped" off at the same frequency, it's way too level, there should be more spikes than this if it were lossless.
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  #5  
Old 2007-01-17, 06:00 PM
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Five Five is offline
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Location: Canada
Re: MD or MP3

I'd guess this is ATRAC3 (LP2) which is really a little worse than even mp3 128kbps CBR and should not be traded. The noise in the high frequencies demonstrates that it has been captured via analog but if it was mp3 it would be perfectly black up there. Don't trade this one. I was tempted not to post at all.
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