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  #1  
Old 2005-01-11, 03:16 PM
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Strange spectral view

Hey guys,
I am new at this detecting .mp3 sourced stuff. I am fairly sure that this show is .mp3 sourced (and if not, I know that it is something else not great), but I am curious as to why this has the haircut and also a large chunk missing in the middle of the spectrum. Thanks in advance!

-Phil
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  #2  
Old 2005-01-13, 11:23 AM
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Re: Strange spectral view

Hmm..without knowing what this is or where it came from, I'd venture to say that someone made a rather poor attempt at noise reduction or hiss reduction. It certainly could be an mp3, but I'd say that certainly there was some attempt by someone without the ability to do so to "remaster" this recorrding. That dark slice in the middle indicates that someone tinkered.

Even worse, it could easily be that both are true. Obviously, this went through unworthy hands at some point.

What recording is it?
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  #3  
Old 2005-01-13, 02:09 PM
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Re: Strange spectral view

Do you have any idea if this is video sourced? A couple of CDR shows I have that are sourced from VHS have a deafening squeal on which I presume is from tape head friction or something similar. As such, when I've backed them up to lossless, I've taken time just to completely filter out the narrow frequency concerned. Sure, the shows aren't in their pure form any more, but at least I can bear to listen to them rather than giving up in pain part way through! I personally wouldn't distribute anything that'd been toyed with in this way, but someone else may have and it would cause such a spectral view.

Probably unlikely but at least possible I'd say.
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  #4  
Old 2005-01-13, 02:17 PM
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Re: Strange spectral view

This looks like it came from TV > VHS > ? > MP3/AC3 > ? >you

Some audio I got from an old VHS tape recently has a very similar "death star groove" around 10-12k like this. The entire highend missing could be n/r and/or due to lossy source. It looks quite legoish... would love to check out a 1-2 second view.
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  #5  
Old 2005-01-13, 02:41 PM
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Re: Strange spectral view

I'm at work right now, so I will have to post more tonight. Of the top of my head. It is a Better Than Ezra show from 11-16-00. I have absolutely no source info on it, nor can I find any on the internet (etree only has the setlist). Anyhow, I'll post more on it later tonight.

-Phil
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  #6  
Old 2005-01-13, 05:11 PM
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Re: Strange spectral view

Quote:
Originally Posted by Five
It looks quite legoish... would love to check out a 1-2 second view.
Acutally, I'm not sure why I didn't already notice this, but that was a 1-2 second view that I posted. Also, that is actually from the BTE 03/01/02 show, not the one that I previously mentioned. Although, I think that the other one is .mp3 too!
-Phil
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  #7  
Old 2005-01-13, 05:25 PM
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Re: Strange spectral view

Quote:
Originally Posted by irishcrazy2005
Acutally, I'm not sure why I didn't already notice this, but that was a 1-2 second view that I posted. Also, that is actually from the BTE 03/01/02 show, not the one that I previously mentioned. Although, I think that the other one is .mp3 too!
-Phil
oh, okay!

Lego=lossy

unless the source is MD this is bad news.
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  #8  
Old 2005-01-13, 06:34 PM
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Re: Strange spectral view

Quote:
Originally Posted by Five
oh, okay!

Lego=lossy

unless the source is MD this is bad news.
Yeah, sadly I haven't the slightest clue what the source on this one might be. The Better Than Ezra community is not very good at spreading the original lossless files. Luckily I am getting several master copies of shows in a trade now; maybe I can get the community into lossless.

On a side note, I have a question about how much research must be done and in what way can it be done before one seeds a show as CDR(x)? I have a show from the band Live that doesn't seem to have an SHN source floating around, but I really don't know how to tell for sure. Thanks in advance!

-Phil
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  #9  
Old 2005-01-13, 07:34 PM
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Re: Strange spectral view

Quote:
Originally Posted by irishcrazy2005
I have a show from the band Live that doesn't seem to have an SHN source floating around
any date / recording info?
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  #10  
Old 2005-01-13, 07:44 PM
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Re: Strange spectral view

Okay, regarding that Live show that I mentioned in the previous post. I have a question about that one as well. I really have no idea what I'm looking for to see if a show is the original source. Here is a two second spectral and freq analysis of a track from this show. I think that maybe it is minidisc (I say that without knowing anything about the source)? Thanks for the help!

-Phil
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  #11  
Old 2005-01-13, 08:03 PM
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Re: Strange spectral view

Quote:
Originally Posted by ssamadhi97
any date / recording info?
All I can find on the internet is that it is from 12/18/1999 in Duesseldorf, Germany at the Philipshalle. There is also this lineage listed db.etree.org website: satellite TV > Sony MZ-R30 MD master > CDR > CDR. Only one user has the show, and I have emailed him to see if he is the taper. Anyhow, that's all I've got.

-Phil
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  #12  
Old 2005-01-14, 02:25 AM
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Re: Strange spectral view

Satellite TV means it'll be MP2 before it hits the minidisc...doubly lossy and unnecessarily bloated in size. Whether decent bitrate MP2 broadcast is superior/inferior to FM is debatable but an additional lossy stage has got to be bad.
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  #13  
Old 2005-01-14, 05:53 PM
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Re: Strange spectral view

Quote:
Originally Posted by irishcrazy2005
All I can find on the internet is that it is from 12/18/1999 in Duesseldorf, Germany at the Philipshalle. There is also this lineage listed db.etree.org website: satellite TV > Sony MZ-R30 MD master > CDR > CDR.
Might very well be your source, it looks MD-ish as well.

I have two different lossless copies of that show actually, one recorded myself (analog cable iirc) and one from a digital satellite rebroadcast.

Might be clever to compare the recordings we have and see which one is the best before seeding any of them..

Quote:
Originally Posted by ffooky
Satellite TV means it'll be MP2 before it hits the minidisc...doubly lossy and unnecessarily bloated in size. Whether decent bitrate MP2 broadcast is superior/inferior to FM is debatable but an additional lossy stage has got to be bad.
No, not necessarily MP2.
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