The Traders' Den  

  The Traders' Den > Where we go to learn ..... > Technobabble > Lossy or Lossless?
 

Notices

Lossy or Lossless? Please use this forum to post spectral and frequency analysis posts about shows you have your doubts about.

Reply
 
Thread Tools
  #1  
Old 2007-04-26, 04:17 PM
SundayDriver's Avatar
SundayDriver SundayDriver is offline
72826
76.06 GB/132.69 GB/1.74
 
Join Date: Oct 2005
Location: the swamps of Jersey
Noise Reduction or Lossy?

I have always been unsure about this one- it looks lossy but doesn't sound lossy. It is taken from a cassette source recorded in a large stadium, no lineage information. There is a strange spike at just about 16000 Hz. Could this be the effect of a TV being left on during the transfer? Any ideas? I can provide a sample.
Attached Images
File Type: jpg vienna92.JPG
( 105.8 KB, 55 views)
 
Reply With Quote Reply with Nested Quotes
  #2  
Old 2007-04-26, 08:06 PM
Five's Avatar
Five Five is offline
TTD Staff
186.65 GB/588.32 GB/3.15
 
Join Date: Oct 2004
Location: Canada
Re: Noise Reduction or Lossy?

I'd call that lossy for sure... looks like md. check out those "parapets" starting around 15kHz. I've never seen nr that creates that artifact. I'm not at all certain how the stripe got there

I think this is the same show discussed here:
http://www.thetradersden.org/forums/...ad.php?t=37184

or maybe another show from the same guy??
__________________
Checksums Demystified EAC Config MakeTorrent WinAmp Config

Modern social theory casts a highly skeptical eye on any declaration that a group of persons is without conflict, and insists, on the contrary, that conflict is natural to groups, and even more, is essential to them. -Patrick Henry
Reply With Quote Reply with Nested Quotes
  #3  
Old 2007-04-26, 10:19 PM
SundayDriver's Avatar
SundayDriver SundayDriver is offline
72826
76.06 GB/132.69 GB/1.74
 
Join Date: Oct 2005
Location: the swamps of Jersey
Re: Noise Reduction or Lossy?

Thanks for taking a look Five. This is the same show as the one shown in the thread you linked. I didn't even see that thread before I posted this. The original poster and I have been exchaging e-mails about this one.

I forgot that portable MD recorders were "out" by 1992, so that very well could be a possibility. I guessed it was from a cassette source because in parts, you can hear some wow and flutter. I think the spike was somehow introduced in the transfer from whatever the original source was. I know my laptop sound card did that once when I went straight out of the MD into the line input.
Reply With Quote Reply with Nested Quotes
  #4  
Old 2007-04-29, 02:27 AM
Five's Avatar
Five Five is offline
TTD Staff
186.65 GB/588.32 GB/3.15
 
Join Date: Oct 2004
Location: Canada
Re: Noise Reduction or Lossy?

you're welcome yeah I was thinking it could be from a bad soundcard or some wonky HIFI VHS machine or something screwy with the taper's mic (eg the cheapo mic in my ppc has a spike like this). Wherever it came from, the atrac has broken up the line (look in the sa) so therefore must have been in the signal before it MD-ified.
__________________
Checksums Demystified EAC Config MakeTorrent WinAmp Config

Modern social theory casts a highly skeptical eye on any declaration that a group of persons is without conflict, and insists, on the contrary, that conflict is natural to groups, and even more, is essential to them. -Patrick Henry
Reply With Quote Reply with Nested Quotes
Reply

The Traders' Den > Where we go to learn ..... > Technobabble > Lossy or Lossless?

Similar Threads
Thread Forum Replies Last Post
An urgent message about digital noise reduction - tungarbulb Technobabble 43 2013-02-04 04:27 AM
The art of noise - Drewa311 ISO - In Search Of... 0 2008-10-03 06:18 PM
Noise reduction - ffooky Lossy or Lossless? 1 2007-07-17 11:05 PM
Mp3 or noise reduction? - tilomagnet Lossy or Lossless? 5 2005-09-28 06:11 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forums


All times are GMT -5. The time now is 01:59 AM.


Powered by: vBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©2004 - , TheTradersDen.org - All Rights Reserved - Hosted at QuickPacket
no new posts