Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Can you tell original file from tube amp record? - test
Can you tell original file from tube amp record? - test
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
View Poll Results: Which file is the original and which do you prefer
Apricot is the original file 7 46.67%
Avocado is the original file 5 33.33%
I prefer Apricot by listening 7 46.67%
I prefer Avocado by listening 7 46.67%
Multiple Choice Poll. Voters: 15. You may not vote on this poll

Reply
 
Thread Tools Search this Thread
Old 10th December 2018, 01:14 AM   #631
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
Quote:
Originally Posted by TNT View Post
First I could not do this either and was really confused. Then I picked up on used level. I was playing it to loud. Then it was easy.
//
Do you know what was distorting?
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 10th December 2018, 03:39 AM   #632
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: SW Florida
Can you tell original file from tube amp record? - test
Quote:
Originally Posted by mmerrill99 View Post
A great example of irony - you try to accuse me of exactly what you demonstrate by this comment
I don't think that word means what you think it means.
  Reply With Quote
Old 10th December 2018, 05:33 AM   #633
johnego is offline johnego  Indonesia
diyAudio Member
 
Join Date: Dec 2017
Quote:
Originally Posted by PMA View Post
an off-line test for the public forum, but even as such it is helpful and interesting to me
Hi Pavel,

I believe that it is more useful to you because mostly you can hear the difference. Reading people's conclusion (that might be right or wrong) is different from listening and experiencing by your own ears.

Once you can hear it, then the next step is to be able to decide whether A is better than B, or not...
  Reply With Quote
Old 10th December 2018, 05:43 AM   #634
johnego is offline johnego  Indonesia
diyAudio Member
 
Join Date: Dec 2017
Quote:
Originally Posted by indra1 View Post
Seems that not very many members of this forum are interested in the audible effect of phase coherence of audio reproduction chain, even less are those interested in phase of the harmonic distortion.
In my experience, it is very important, especially when everybody else think that it is not so they ignore it in a design and it becomes a 'make or break'.

In the recent test by KSTR I think the only difference between original file and a file going through A-D-A conversion is the phase (?). Pavel could hear the difference between the two files but I believe it is hard to decide which one is better, unless one learn from other experiences such as why the 'thin' sound of original file should be better than the 'detailed and transparent' sound of distorted file.
  Reply With Quote
Old 10th December 2018, 07:21 AM   #635
indra1 is offline indra1  Indonesia
diyAudio Member
 
Join Date: Nov 2010
Location: Bogor
Quote:
Originally Posted by johnego View Post
In my experience, it is very important, especially when everybody else think that it is not so they ignore it in a design and it becomes a 'make or break'.
In the recent test by KSTR I think the only difference between original file and a file going through A-D-A conversion is the phase (?). Pavel could hear the difference between the two files ...
All of amplifiers that I currently use has phase response difference of 10 - 25 between 1kHz and 20kHz. I suspect some difference in spatial information of the presentation, but has not yet arrived at a definite conclusion. Perhaps I will be able to get better understanding once I have an amplifier with less than 1 phase response difference between 1kHz and 20kHz.

However, I found the spatial depth effect of negative 90 2H is easier to perceive with the caveat of what Nelson Pass mentioned about not everyone being able to hear or care about the effect. I hope that other members with experience and trained hearing like Pavel would be interested to look and comment about the effect to advance the understanding a bit further. I would not be surprised if further investigation reveals other explanation or even found the relevant correlation to be something else.
  Reply With Quote
Old 10th December 2018, 08:33 AM   #636
johnego is offline johnego  Indonesia
diyAudio Member
 
Join Date: Dec 2017
Quote:
Originally Posted by indra1 View Post
All of amplifiers that I currently use has phase response difference of 10 - 25 between 1kHz and 20kHz.
I don't think this kind of phase critical. This one is mostly the result of wideband output transistor, correct?
  Reply With Quote
Old 10th December 2018, 09:02 AM   #637
indra1 is offline indra1  Indonesia
diyAudio Member
 
Join Date: Nov 2010
Location: Bogor
Yes. But it is good to find out for sure.
  Reply With Quote
Old 10th December 2018, 10:02 AM   #638
TNT is online now TNT  Sweden
diyAudio Member
 
Join Date: Apr 2003
Location: Sweden
Quote:
Originally Posted by scottjoplin View Post
Do you know what was distorting?
My ears most probably. But I will try my DAC/HP amp instead of the laptop one day.

//
__________________
More distortion to the people!
  Reply With Quote
Old 10th December 2018, 10:04 AM   #639
TNT is online now TNT  Sweden
diyAudio Member
 
Join Date: Apr 2003
Location: Sweden
Quote:
Originally Posted by indra1 View Post
All of amplifiers that I currently use has phase response difference of 10 - 25 between 1kHz and 20kHz. I suspect some difference in spatial information of the presentation, but has not yet arrived at a definite conclusion. Perhaps I will be able to get better understanding once I have an amplifier with less than 1 phase response difference between 1kHz and 20kHz.

However, I found the spatial depth effect of negative 90 2H is easier to perceive with the caveat of what Nelson Pass mentioned about not everyone being able to hear or care about the effect. I hope that other members with experience and trained hearing like Pavel would be interested to look and comment about the effect to advance the understanding a bit further. I would not be surprised if further investigation reveals other explanation or even found the relevant correlation to be something else.
Don't bother if don't have very special speakers. Also, this was a varying phase change - that you will not have in an amp.

//
__________________
More distortion to the people!
  Reply With Quote
Old 10th December 2018, 10:23 AM   #640
PMA is offline PMA  Europe
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
The example here with H2 at 100% and same amplitude as base frequency is an extreme. I doubt that after reducing H2 to 0.7% max. as in the fruit test the phase change of H2 would be audible. And it is not changing in the amplifier under test, as TNT has correctly stated.

I did a phase test recently, anyone interested may try again.

Audibility of allpass phase distortion (test)
  Reply With Quote

Reply


Can you tell original file from tube amp record? - testHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
What CD or Music file YOU USE to test bass??? murillollirum Music 48 26th November 2018 09:25 PM
How to record/save a streaming website lesson as an MP3 file? Markg2 Software Tools 11 21st October 2016 08:01 PM
How can we interface the PCM4202 with a SD card to record wav file on a SD card ? gaetan8888 Digital Line Level 3 11th June 2013 03:05 PM
Test record? Etocynned Music 2 20th March 2012 01:01 PM
Another file upload test weinstro Forum Problems 5 24th September 2007 09:47 PM


New To Site? Need Help?

All times are GMT. The time now is 10:13 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 13.64%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki