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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 2007-02-19, 12:33 AM
sshaw13's Avatar
sshaw13 sshaw13 is offline
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Question Trouble reading FM broadcast SA

This show came to me supposedly lossless. Can someone help me interpret the SA and FA? I know it's from an FM broadcast because there's promos, etc. on the recording, but I don't know enough about FM to tell if this is lossless or lossy. There's no blockiness but it looks clipped at about 16k. What are those 2 lines at 16k and 19k?

Also, can you tell by the analyses if it's a pre-FM source or if it was recorded from the broadcast?

Thanks
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File Type: jpg whole SA.jpg
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File Type: jpg 2-sec SA.jpg
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File Type: jpg FA.jpg
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  #2  
Old 2007-02-19, 12:53 AM
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Re: Trouble reading FM broadcast SA

I have never seen an FM broadcast that had two stripes... normally only one stripe.

for sure it is not pre-fm, seems like its recorded from FM (with the extra stripe in there I-don't-know-how).
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Old 2007-02-21, 03:55 PM
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Re: Trouble reading FM broadcast SA

The FA alone is enough to prove that it's not lossy.

I believe the extra stripe in the Spectral Analysis is from static. Does the recording have some radio "hiss" in it?
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Old 2007-02-21, 04:04 PM
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Re: Trouble reading FM broadcast SA

That top line is a sign of a crappy sound card.
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Old 2007-02-21, 08:01 PM
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sshaw13 sshaw13 is offline
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Re: Trouble reading FM broadcast SA

Thanks for the info guys. This is such a great service here.

BTW, no radio "hiss" - the show sounds GREAT - I just thought the SA was odd.
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