Hires 96/24 listening test of opamps - diyAudio
Go Back   Home > Forums > General Interest > Everything Else
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs 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......

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 of the files do you prefer by listening?
rr 1 4.55%
ss 2 9.09%
tt 2 9.09%
uu 9 40.91%
vv 1 4.55%
I can not hear a difference 7 31.82%
Voters: 22. You may not vote on this poll

Reply
 
Thread Tools Search this Thread
Old 17th June 2017, 12:09 PM   #1
PMA is online now PMA  Europe
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
Default Hires 96/24 listening test of opamps

As a follow-up to the thread
Another big opamp listening test
I am posting a new opamp test, this time in 96kHz/24bit resolution. The music samples may be downloaded from
http://pmacura.cz/test_hires.zip
The file is quite big, about 160MB, as a result of higher resolution format.

The samples have a lot of information above the audio band, as you can see from the attached spectrogram. It is a true hires, not the file create by ultrasonic noise addition, as is sometimes quite usual.

The link level was now 2Vrms = 0dBFS.

The poll is valid for 10 days. Please do not write your comments to the forum, but rather send it to me to my PM here or to my e-mail address.

It would be nice if you could support your preferences by an ABX result, should be signed like in this example:
Another big opamp listening test
This allows verification of validity of your result.

Thank you and have fun!
--------------------------------

Poll question "I can not hear a difference" was added on June 25. Please feel free to vote for this option in case that all the files sound same to you, without audible difference.
Attached Images
File Type: png hires_spectrogram.png (739.9 KB, 468 views)

Last edited by PMA; 25th June 2017 at 10:57 AM.
  Reply With Quote
Old 17th June 2017, 01:23 PM   #2
diyAudio Member
 
Join Date: Jul 2016
Just to be clear Pavel, I think you said,

Please do not write your comments to the forum,

but rather send it to Pavel by PM as per the post above, or to his e-mail address.

Last edited by Markw4; 17th June 2017 at 01:26 PM.
  Reply With Quote
Old 17th June 2017, 02:11 PM   #3
PMA is online now PMA  Europe
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
Quote:
Originally Posted by Markw4 View Post
Just to be clear Pavel, I think you said,

Please do not write your comments to the forum,

but rather send it to Pavel by PM as per the post above, or to his e-mail address.
Mark, you are absolutely right.
  Reply With Quote
Old 17th June 2017, 02:42 PM   #4
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: dorchester ma
Pavel, a full round would be 32 combinations is this necessary? I'm thinking of writing a Python script to randomly make up ABX combos to write to my SD card so I can do undisturbed headphone listening.
__________________
"The question of who is right and who is wrong has seemed to me always too small to be worth a moment's thought, while the question of what is right and what is wrong has seemed all-important."

Last edited by scott wurcer; 17th June 2017 at 02:46 PM.
  Reply With Quote
Old 17th June 2017, 02:55 PM   #5
PMA is online now PMA  Europe
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
Quote:
Originally Posted by scott wurcer View Post
Pavel, a full round would be 32 combinations is this necessary? I'm thinking of writing a Python script to randomly make up ABX combos to write to my SD card so I can do undisturbed headphone listening.
Scott, it is definitely not necessary. For ABX, I would be glad if you tried just 2 pairs, any of the set.
  Reply With Quote
Old 17th June 2017, 05:22 PM   #6
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Would you like ABX results posted here Pavel ?
  Reply With Quote
Old 17th June 2017, 05:28 PM   #7
PMA is online now PMA  Europe
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
Quote:
Originally Posted by Mooly View Post
Would you like ABX results posted here Pavel ?
I think it would be fine, Karl.
  Reply With Quote
Old 17th June 2017, 05:30 PM   #8
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
OK I think first of all I will just listen and make notes for myself rather than ABX (at least to begin within).
  Reply With Quote
Old 17th June 2017, 05:37 PM   #9
PMA is online now PMA  Europe
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
On a technical note: the worst opamp in this test has now THD at 10kHz = 0.064% and is about 20x worse in distortion at 10kHz than the digital chain. This is the result of higher voltage level in this test. Also, the differences in signals are higher than in the previous test. The best opamps again make a direct copy of the digital chain properties.
  Reply With Quote
Old 17th June 2017, 05:48 PM   #10
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
I've just been listening and in the end did ABX a couple of pairs. Nothing conclusive yet One for tomorrow and the coming days me-thinks.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Audio Streamer for 24/192 or 24/96 options barackuda Digital Source 23 3rd December 2016 02:57 AM
DAC to use for 24/96 at most osd1 Digital Line Level 2 17th August 2013 10:57 PM
2x4 in Box with 24/96 or 24/196 aazeez1975 miniDSP 3 8th July 2011 10:40 AM
Are there any DIP 24/96 or 24/192 ADCs and I2P to FireWire Codecs? BoilermakerFan Digital Source 0 21st July 2008 08:27 PM
24/96 and 24/192 is no good. MP3 sounds better! peranders Digital Source 92 30th July 2002 09:30 AM


New To Site? Need Help?

All times are GMT. The time now is 06:25 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki