IPB

Welcome Guest ( Log In | Register )

7 Pages V  « < 5 6 7  
Reply to this topicStart new topic
Nero AAC Codec Version 1.5.1.0 released
Larson
post Dec 7 2010, 11:31
Post #151





Group: Members
Posts: 131
Joined: 27-March 09
Member No.: 68422



Is Nero AAC development still active? It's almost a year now that the last version was released, any news of further updates?
Go to the top of the page
+Quote Post
IgorC
post Dec 7 2010, 15:55
Post #152





Group: Members
Posts: 1556
Joined: 3-January 05
From: ARG/RUS
Member No.: 18803



Versions 1.5.1 and 1.3.3 haven't quality improvements. Only fixes for bugs and some regressions.
Version 1.1.34 has only some retuning and no quality improvements in LC-AAC encoder. And at least one regression was introduced in this version.
Some quality improvements were made in 1.0.7.0. It's more than 3 years ago.
Go to the top of the page
+Quote Post
matt_t
post Dec 7 2010, 16:04
Post #153





Group: Members
Posts: 38
Joined: 18-April 08
Member No.: 52878



QUOTE (IgorC @ Dec 7 2010, 14:55) *
Versions 1.5.1 and 1.3.3 haven't quality improvements. Only fixes for bugs and some regressions.
Version 1.1.34 has only some retuning and no quality improvements in LC-AAC encoder. And at least one regression was introduced in this version.
Some quality improvements were made in 1.0.7.0. It's more than 3 years ago.


This is wrong. For example see this thread http://www.hydrogenaudio.org/forums/index....showtopic=67592 and the last post. Does this not count as a quality improvement? I'm sure there have been others too.
Go to the top of the page
+Quote Post
IgorC
post Dec 7 2010, 16:29
Post #154





Group: Members
Posts: 1556
Joined: 3-January 05
From: ARG/RUS
Member No.: 18803



1. Do you make conclusion looking at the result of one sample? Encoder can do better on one sample but worse on others. That's actually happens with 1.5.4. Overall there is no quality improvement. Read the entire topic.

2.
QUOTE (matt_t @ Dec 23 2009, 17:28) *
I haven't done a proper ABX test, but it's immediately clear (to me at least) that the new 1.5.1.0 encoder is MUCH better on this sample.

So you have made a conclusion basing on a single result without blind test.
Go to the top of the page
+Quote Post
matt_t
post Dec 8 2010, 01:24
Post #155





Group: Members
Posts: 38
Joined: 18-April 08
Member No.: 52878



QUOTE (IgorC @ Dec 7 2010, 15:29) *
1. Do you make conclusion looking at the result of one sample? Encoder can do better on one sample but worse on others. That's actually happens with 1.5.4. Overall there is no quality improvement. Read the entire topic.

2.
QUOTE (matt_t @ Dec 23 2009, 17:28) *
I haven't done a proper ABX test, but it's immediately clear (to me at least) that the new 1.5.1.0 encoder is MUCH better on this sample.

So you have made a conclusion basing on a single result without blind test.


There is no point doing a blind test I know I will fail completely having got 16/16 with the previous version. I know what artifact I heard with the old version, and it has gone with the new one.

Your previous post was, IMHO, a little dismissive of the Nero developers.

This post has been edited by matt_t: Dec 8 2010, 01:25
Go to the top of the page
+Quote Post
muaddib
post Dec 8 2010, 08:37
Post #156





Group: Developer
Posts: 398
Joined: 14-October 01
Member No.: 289



On some samples it got better, on some samples it got worse. Due to the big investigation that was invested in it, I believe that in average (among samples and listeners) it got just a bit better, but at the end it depends on what music you like to listen and if the changes are good for your ears or not.
Go to the top of the page
+Quote Post
.alexander.
post Dec 10 2010, 09:06
Post #157





Group: Members
Posts: 73
Joined: 14-December 06
Member No.: 38681



QUOTE (muaddib @ Dec 8 2010, 10:37) *
On some samples it got better, on some samples it got worse. Due to the big investigation that was invested in it, I believe that in average (among samples and listeners) it got just a bit better, but at the end it depends on what music you like to listen and if the changes are good for your ears or not.


Regarding SBR encoding, what if you first encode the core stream, than turn quantized signal back to time domain and feed analysis QMF filterbank (its LF part) with the same signal it operates in decoder. Do you think this can have any positive effect?
Go to the top of the page
+Quote Post
kornchild2002
post Dec 10 2010, 10:55
Post #158





Group: Members
Posts: 2073
Joined: 8-April 05
From: Cincinnati, OH
Member No.: 21277



QUOTE (matt_t @ Dec 7 2010, 17:24) *
There is no point doing a blind test I know I will fail completely having got 16/16 with the previous version. I know what artifact I heard with the old version, and it has gone with the new one.


Umm... A 16/16 would mean that you were able to effectively pick out which track was which during a blind ABX test. In other words, that is an ABX test that you "passed." Failing a test would be obtaining a much lower score and a higher probability that you were guessing. The whole "I know what I know" argument really has no place unless it can be backed up. What you think you remember hearing is not always accurate hence why downloading an older version of the Nero AAC encoder and testing it would be wise. Conducting a quick listen comparing to what you think you remember and relying on a two year old thread (which discussed a spoken word sample) is not enough to backup any claims. IgorC's post was also not dismissive of the Nero AAC developers. They were simply pointing out changes that have been applied to the encoder affecting output quality. Encoder updates do not always improve quality and many focus on stability issues. Igor's post would have been dismisive had they said "Nero AAC hasn't been updated in 3 years for LC-AAC encoding because the Nero devs are lazy bums who can't code to save their lives." Simply pointing out changes of a specific encoder over a period of time is not indicative of developer performance and they did not make an opinionated comment regarding that.
Go to the top of the page
+Quote Post
pgm86
post Jan 11 2011, 11:49
Post #159





Group: Members
Posts: 16
Joined: 3-March 10
Member No.: 78677



hey guys. any updates when there will be a new nero aac codec? thanks
Go to the top of the page
+Quote Post

7 Pages V  « < 5 6 7
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 29th August 2014 - 14:30