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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 2005-11-04, 01:47 PM
alchemy71085
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Lossy or Lossless

Never seen anything like this before- the frequency analysis looks fine but I don't like the way that spectral view is "cut off". Supposed lineage:

FM>tape (1st. gen.)>cd-r>eac>wav>flac

Unfortunately, since I got these screen caps. from someone else, I don't have any other pictures then what's here. Let me know what you think. Thanks.
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  #2  
Old 2005-11-04, 01:53 PM
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Re: Lossy or Lossless

the carrier (aka red stripe) is missing, which makes this a little suspicious. it is also possible that somebody has carefully removed it.

so I can't really tell from these pics if this is good or not

get us some audio from the show if you can
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  #3  
Old 2005-11-06, 03:14 PM
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Re: Lossy or Lossless

Quote:
Originally Posted by alchemy71085
Never seen anything like this before- the frequency analysis looks fine but I don't like the way that spectral view is "cut off".
A spectral view that cuts off between 15 and 16 kHz is not abnormal for an FM recording, and the cassette lineage might explain the missing 19kHz pilot tone. Still, I agree with Five: its complete absence makes me a bit wary.

By the way, a noise floor between -84dB and -96dB as shown by the frequency analysis can be safely considered a "cut off" as well, if the actual signal is significantly stronger in the lower frequencies (note the step / drop-off at 15kHz in your FA).
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  #4  
Old 2005-11-07, 09:34 PM
alchemy71085
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Re: Lossy or Lossless

This same torrent was actually banned today for other reasons (skips in tracks), so this is now dead. I have already deleted the .flac files off of my hard drive. Thanks for the feedback though.
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