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 2010-02-16, 01:36 PM
stripeydave's Avatar
stripeydave stripeydave is offline
Dum duh dum dumm
309.47 GB/302.97 GB/0.98
 
Join Date: Dec 2004
Location: Southern California
Please confirm if this is lossy or not

I recently grabbed a great set of 4 discs of music and would like to share it, but I am far from knowledgeable on the subject even though I have read the pinned thread.

Therefore, I submit to the greatest collection of minds, for your consideration the following image from Audacity. I have left it large for clarity of image.

Thank you in advance for your assistance,

Dave

Reply With Quote Reply with Nested Quotes
  #2  
Old 2010-02-16, 02:46 PM
Drgiggles1's Avatar
Drgiggles1 Drgiggles1 is offline
855.45 GB/2.86 TB/3.42
 
Join Date: Dec 2008
Location: Pocono Mountains
Re: Please confirm if this is lossy or not

Looks lossy to me.
__________________
"Schoeps Schmoeps!!!
(I don't hate Schoeps mics, just the snobs who foolishly believe excellent recordings can't be made without them.)" Falconidave
Mics: CA-14 (o,c,o)
Remote Power: CA-9100 pre-amp, CA-UBB battery box
Recorders: Sony PCM-M10, Tascam DR-2d
Cable/s: custom 6" GAKables Mini Starquad
Batteries: Maha 9.6V Imedion, Maha Powerex 2700 mAh
Chargers: Maha MH-C9000, MAHA MH-C490F
Reply With Quote Reply with Nested Quotes
  #3  
Old 2010-02-17, 03:21 PM
lintoni
0.00 KB/0.00 KB/---
 
Re: Please confirm if this is lossy or not

It doesn't look lossy to me.

It does look odd though, I've not seen anything like those spikes of noise (plainly showing just before 22, 20, 18, 16, 14 kHz on the frequency plot, but extending down at regular 2kHz intervals down to 10kHz on the spectral plot).
Reply With Quote Reply with Nested Quotes
  #4  
Old 2010-02-17, 03:58 PM
paddington's Avatar
paddington paddington is offline
please look after this bear
TTD Staff
83.17 GB/882.10 GB/10.61
 
Join Date: Jan 2005
Location: UK
Re: Please confirm if this is lossy or not

Can't tell from what you;ve posted. Obviously, there was a bunch of broad spectrum noise that was picked up eitehr during recording or during transfer, but taht isn;t related to whether you have lossy data compression applied,

Need to see a 2-4 second span in the spectrum analyzer from Cool Edit Pro or Adobe Audition. It is much trickier to spot in Audacity's SA.

If you want, you can post a 10 sec sample (WAV) here and I'll have a look.
__________________
"There are some of these recordings where it is just a whirring, and you cannot hear the music. " - Jimmy Page, 2007 / JUL / 26
Reply With Quote Reply with Nested Quotes
  #5  
Old 2010-02-17, 04:07 PM
AAR.oner's Avatar
AAR.oner AAR.oner is offline
TTD Staff
1.11 TB/1.41 TB/1.27
 
Join Date: Feb 2005
Location: Appalachia
Re: Please confirm if this is lossy or not

yeah i'd post a couple wav samples...one during music & one during "silence" if it exists

i'm guessing the multiple stripes [SA]/spikes [FA] occurred at more than one point during the process...never seen that many happen at once...and very strange they're at equidistant frequencies
__________________
TTD's Gear Lust Forum -- info & reviews on taping gear
The Basics of EQing
Reply With Quote Reply with Nested Quotes
  #6  
Old 2010-02-17, 07:31 PM
stripeydave's Avatar
stripeydave stripeydave is offline
Dum duh dum dumm
309.47 GB/302.97 GB/0.98
 
Join Date: Dec 2004
Location: Southern California
Re: Please confirm if this is lossy or not

https://www.yousendit.com/download/R...TWMyWGNLSkE9PQ

Thanks folks for the help. I could not find a way to post the wav file directly so here is a link to a 15 sec sample at the end of the track which contains both a musical portion at the beginning, and about two seconds of silence at the end of the track. I checked and the silent portion has the spikes, but I'll wait to hear your opinion.

If it helps to clarify, the tracks are from a Gillian Welch collection titled "Building a House", which is a 4 disc set of demos, outtakes and one early live show from 1994.

thanks in advance (again)

Dave
Reply With Quote Reply with Nested Quotes
  #7  
Old 2010-02-17, 08:40 PM
paddington's Avatar
paddington paddington is offline
please look after this bear
TTD Staff
83.17 GB/882.10 GB/10.61
 
Join Date: Jan 2005
Location: UK
Re: Please confirm if this is lossy or not

Quote:
Originally Posted by stripeydave View Post
https://www.yousendit.com/download/R...TWMyWGNLSkE9PQ

Thanks folks for the help. I could not find a way to post the wav file directly so here is a link to a 15 sec sample at the end of the track which contains both a musical portion at the beginning, and about two seconds of silence at the end of the track. I checked and the silent portion has the spikes, but I'll wait to hear your opinion.

If it helps to clarify, the tracks are from a Gillian Welch collection titled "Building a House", which is a 4 disc set of demos, outtakes and one early live show from 1994.

thanks in advance (again)

Dave

it doesn't seem lossy.

for future reference, when checking SAs, try to post a snip other than the sustained ending of a song need the audio to vary a bit more than that.. someting out of teh chorus is usually diverse enough to get a good reading on it.
__________________
"There are some of these recordings where it is just a whirring, and you cannot hear the music. " - Jimmy Page, 2007 / JUL / 26
Reply With Quote Reply with Nested Quotes
  #8  
Old 2010-02-17, 10:22 PM
stripeydave's Avatar
stripeydave stripeydave is offline
Dum duh dum dumm
309.47 GB/302.97 GB/0.98
 
Join Date: Dec 2004
Location: Southern California
Re: Please confirm if this is lossy or not

Quote:
Originally Posted by jameskg View Post
it doesn't seem lossy.

for future reference, when checking SAs, try to post a snip other than the sustained ending of a song need the audio to vary a bit more than that.. someting out of teh chorus is usually diverse enough to get a good reading on it.
Thank you. I will keep that in mind for future reference, and I thank thee again for your help.

I look forward to torrenting that set here shortly, as my ratio is dropping lower than I like it to be due to some awesome things showing up here lately!
Reply With Quote Reply with Nested Quotes
  #9  
Old 2010-02-18, 12:33 AM
paddington's Avatar
paddington paddington is offline
please look after this bear
TTD Staff
83.17 GB/882.10 GB/10.61
 
Join Date: Jan 2005
Location: UK
Re: Please confirm if this is lossy or not

__________________
"There are some of these recordings where it is just a whirring, and you cannot hear the music. " - Jimmy Page, 2007 / JUL / 26
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
Is This Lossy? - graceadelica Lossy or Lossless? 9 2009-05-05 04:40 PM
Is this FM, lossy or DAT? - Karst Lossy or Lossless? 5 2009-04-17 04:49 PM
Definitely Lossy ..... Right? - The FiXXXeR Lossy or Lossless? 2 2007-07-18 01:54 PM
lossy? - rhinowing Lossy or Lossless? 2 2006-04-07 02:27 PM
Lossy? - bellestar827 Lossy or Lossless? 1 2006-02-11 01:41 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 04:26 AM.


Powered by: vBulletin, Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright ©2004 - , TheTradersDen.org - All Rights Reserved - Hosted at QuickPacket
no new posts