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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 2006-01-15, 03:59 AM
taygan taygan is offline
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Death Star Groove AND mp3?

Check this one out. I'm guessing a very bad resmaple (from what??) and then probably mp3? The 16kHz line looks blocky, but not like most of the other mp3s I've been looking at. It's just plain ugly.



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  #2  
Old 2006-01-15, 12:13 PM
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Re: Death Star Groove AND mp3?

looks like 32kHz DAT > SB Live! imo

not too pretty, but I've seen worse!
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  #3  
Old 2006-01-15, 12:58 PM
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Re: Death Star Groove AND mp3?

Haha, oh hell no.

Random 22.05kHz source with cutoff at 10kHz (maybe an mp3 already?) > crappy resampling to 44.1kHz > mp3 or similar lossy encoding

How the heck did that happen? Webcast maybe? I guess it sounds as ugly as it looks, too...
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Old 2006-01-15, 01:30 PM
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Re: Death Star Groove AND mp3?

I disagree... what encoder settings give that kind of a SA signature?

is it possible to get a yousendit sample of this audio? 10-20 seconds? I'd like to hear if this has that lossy sslur to it.

mp3 sources normally have a signature like this (right?):
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File Type: gif mp3sourcefull.gif
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Quote:
Originally posted by oxymoron
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  #5  
Old 2006-01-15, 04:21 PM
taygan taygan is offline
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Re: Death Star Groove AND mp3?

Yes, it does have a lot of sound artifacts, definitely a web-cast sound.

here's the sample:

http://s6.yousendit.com/d.aspx?id=1V...31B99WJG4R310D
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Old 2006-01-15, 04:56 PM
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Re: Death Star Groove AND mp3?

I was wrong... this is lossy as f*ck. I can see it & hear it now.
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Quote:
Originally posted by oxymoron
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  #7  
Old 2006-01-16, 08:41 AM
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Re: Death Star Groove AND mp3?

Quote:
Originally Posted by Five
I disagree... what encoder settings give that kind of a SA signature?
Pretty much what I described... low bitrate encode of a 22050Hz mp3 may introduce a 10kHz lowpass for example; then mediocre resampling adds the "flipped" content above 11025Hz (and leaves the black hole between 10kHz and 12kHz); and finally another round of lossy perceptual encoding introduces the "skyline" around 16kHz.


PS: Five, I hope my "oh hell no" above didn't offend you in any way. I was actually referring to the SA of this track there, but upon rereading that post I noticed that it's very easy to misunderstand.
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  #8  
Old 2006-01-16, 12:38 PM
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Re: Death Star Groove AND mp3?

no harm

good eye!
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Quote:
Originally posted by oxymoron
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