|
|
| Lossy or Lossless? Please use this forum to post spectral and frequency analysis posts about shows you have your doubts about. |
 |
|
|
Thread Tools |
|
#1
2010-01-30, 06:34 PM
|
||||
|
||||
|
Strange looking analysis.. Could anybody have a look?
I got this strange looking file, could anybody tell me what that could be? Why does it cut at 18khz and not 16 or 20.5? And what's that purple stripe? Thanks in advance!
__________________
"They built Parliament-Funkadelic and changed the world." (Prince, 12th Annual Rock就嵇oll Hall Of Fame Induction Dinner, May 6th 1997) No members have liked this post.
|
|
#2
2010-01-30, 06:37 PM
|
||||
|
||||
|
Re: Strange looking analysis.. Could anybody have a look?
The 2nd pic is a 2 second sample, btw.
__________________
"They built Parliament-Funkadelic and changed the world." (Prince, 12th Annual Rock就嵇oll Hall Of Fame Induction Dinner, May 6th 1997) No members have liked this post.
|
|
#3
2010-01-30, 06:52 PM
|
||||
|
||||
|
Re: Strange looking analysis.. Could anybody have a look?
that stripe is a pilot tone [shows as a spike in the FA]...looks to be from a TV source since its in the 15-16kHz region...a pilot tone at 19kHz indicates a FM source
No members have liked this post.
|
|
#4
2010-01-30, 06:55 PM
|
||||
|
||||
|
Re: Strange looking analysis.. Could anybody have a look?
I thought about that as well, but i'm pretty sure this show was never broadcasted, neither TV nor FM.
__________________
"They built Parliament-Funkadelic and changed the world." (Prince, 12th Annual Rock就嵇oll Hall Of Fame Induction Dinner, May 6th 1997) No members have liked this post.
|
|
#5
2010-01-31, 03:27 AM
|
|||
|
|||
|
Re: Strange looking analysis.. Could anybody have a look?
Quote:
No members have liked this post.
|
|
#6
2010-01-31, 05:02 AM
|
||||
|
||||
|
Re: Strange looking analysis.. Could anybody have a look?
That's quite interesting... And it makes kinda sense... Thanks for that info, lintoni!
But what about the cut off frequencies? Would you consider this 100% lossy? Is the cut at around 18khz just the result of a high bitrate mp3 conversion? Thanks so far, guys! 
__________________
"They built Parliament-Funkadelic and changed the world." (Prince, 12th Annual Rock就嵇oll Hall Of Fame Induction Dinner, May 6th 1997) No members have liked this post.
|
|
#7
2010-01-31, 06:32 AM
|
|||
|
|||
|
Re: Strange looking analysis.. Could anybody have a look?
If you could post a spectral screenshot of 2-3 seconds, that might help.
No members have liked this post.
|
|
#8
2010-01-31, 08:13 AM
|
||||
|
||||
|
Re: Strange looking analysis.. Could anybody have a look?
Like this? That's a two second snippet from the file.
__________________
"They built Parliament-Funkadelic and changed the world." (Prince, 12th Annual Rock就嵇oll Hall Of Fame Induction Dinner, May 6th 1997) No members have liked this post.
|
|
#9
2010-01-31, 04:45 PM
|
|||
|
|||
|
Re: Strange looking analysis.. Could anybody have a look?
Hmm... looks ok to me. Possibly somebody has used some noise reduction, which is why there's the 18k cut off. Strange that they didn't take care of the spike at 15.7kHz while they were at it.
No members have liked this post.
|
|
#10
2010-01-31, 05:29 PM
|
||||
|
||||
|
Re: Strange looking analysis.. Could anybody have a look?
Cool, thanks. See, that's the kind of stuff i didn't think of. Never knew that NR could lead to such a "clean" cut. Thanks for your help!
__________________
"They built Parliament-Funkadelic and changed the world." (Prince, 12th Annual Rock就嵇oll Hall Of Fame Induction Dinner, May 6th 1997) No members have liked this post.
|
|
#11
2010-02-01, 02:30 AM
|
|||
|
|||
|
Re: Strange looking analysis.. Could anybody have a look?
Or simply used a brickwall filter at 18kHz to cut everything off. But it looks like a lossless source to me.
No members have liked this post.
|
|
| The Traders' Den |
Similar Threads
|
||||
| Thread | Forum | Replies | Last Post | |
| Help with analysis - Explosivo | Lossy or Lossless? | 1 | 2006-05-12 09:49 AM | |
| ? re: Freq analysis - AAR.oner | Lossy or Lossless? | 9 | 2005-04-22 01:15 PM | |
| Strange (for me) frequency analysis - KingBongo | Lossy or Lossless? | 12 | 2005-03-17 10:12 PM | |
| spec analysis help - tannis | Lossy or Lossless? | 11 | 2005-02-24 11:29 AM | |
| frequency analysis - uah21 | Lossy or Lossless? | 2 | 2005-01-05 02:54 PM | |
|
|
