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 2012-01-15, 06:39 AM
vold911 vold911 is offline
23.39 GB/8.70 GB/0.37
 
Join Date: Oct 2011
a few very tricky lossy or lossless spec images

all of these are audience tapes from early 80s
especially curious about the first one as i cant see the lego skyline or any big black pacthes except complete blackness above the 16k line
the other images also have very distinct flat lines at varying places though all of them seem to lack the lego blocks









Reply With Quote Reply with Nested Quotes
  #2  
Old 2012-01-15, 06:55 AM
AAR.oner's Avatar
AAR.oner AAR.oner is offline
ense et aratro
TTD Staff
1.11 TB/1.41 TB/1.27
 
Join Date: Feb 2005
Location: Appalachia
Re: a few very tricky lossy or lossless spec images

most of these look like fairly typical cassette source spectrums

the "flat lines" you refer to are common to analogue broadcast sources...called the pilot tone, they occur at ~16-17kHz for TV sources, and FM's pilot tone runs ~19kHz...they can also be created during transfer, caused by electrical hum/gear, and appear pretty much anywhere in the spectrum
__________________
TTD's Gear Lust Forum -- info & reviews on taping gear
Basics of EQing

"A man is none the less a slave because he is allowed to choose a new master once in a term of years."
- Lysander Spooner
Reply With Quote Reply with Nested Quotes
  #3  
Old 2012-01-15, 09:06 AM
vold911 vold911 is offline
23.39 GB/8.70 GB/0.37
 
Join Date: Oct 2011
Re: a few very tricky lossy or lossless spec images

Quote:
Originally Posted by AAR.oner View Post
most of these look like fairly typical cassette source spectrums

the "flat lines" you refer to are common to analogue broadcast sources...called the pilot tone, they occur at ~16-17kHz for TV sources, and FM's pilot tone runs ~19kHz...they can also be created during transfer, caused by electrical hum/gear, and appear pretty much anywhere in the spectrum
so they are all lossless?
Reply With Quote Reply with Nested Quotes
  #4  
Old 2012-01-15, 10:09 PM
tonebloke's Avatar
tonebloke tonebloke is offline
333.69 GB/298.04 GB/0.89
 
Join Date: May 2009
Re: a few very tricky lossy or lossless spec images

Thanks for that explanation AAR.oner. Very useful,


Quote:
Originally Posted by vold911 View Post
so they are all lossless?
I would call the first SA lossy.
__________________
" Your tin cup and string "recorder" is worse than a Zoom, which is saying a lot".
Reply With Quote Reply with Nested Quotes
  #5  
Old 2012-01-25, 11:54 PM
bertrand bertrand is offline
0.00 KB/0.00 KB/---
 
Join Date: Jan 2012
Re: a few very tricky lossy or lossless spec images

First one is a terrible mp3, the others I would need FFT1024 cool edit videos or an audio sample.
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
Lossy or Lossless? - quadrophenia Lossy or Lossless? 14 2013-10-04 03:49 AM
Lossy or lossless? - ledzep-77 Lossy or Lossless? 2 2008-06-21 09:13 PM
Lossy or Lossless - Dragonz Lossy or Lossless? 2 2007-07-21 07:42 PM
Lossy or Lossless? - corsair Lossy or Lossless? 2 2007-04-02 03:45 AM
Lossy or Lossless - alchemy71085 Lossy or Lossless? 3 2005-11-07 08:34 PM


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 02:59 AM.


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