IPB

Welcome Guest ( Log In | Register )

R128 versus ReplayGain, The cage match begins here.
Canar
post Jan 26 2011, 19:35
Post #1





Group: Super Moderator
Posts: 3348
Joined: 26-July 02
From: princegeorge.ca
Member No.: 2796



Now that kode54 has released his lovely scanner for foobar2000, I've been playing around with the two, trying to come up with some subjective characteristics that RG and R128 handle differently.

The first big thing is sub-bass! RG routinely rates sub-bass-heavy music as quieter than R128. This makes sense, given that RG is driven by equal-loudness contours. I wonder about the validity in the context of the electronic dance music scene, however. Though the equal loudness contours are probably accurate for pure audibility, the reality is that sub-bass is perceptible in more ways than just listening!

http://www.youtube.com/watch?v=iz_IVmxKKdw -- This track, one of my favourites of 2010, has nearly 4dB difference between R128 and RG. I'm pretty confident it's due to the difference in the way the two algorithms perceive bass. The track is driven by a deep sub-bass melody with minimal high-frequency content.

I know that this is a quick and dirty "analysis", but I wanted to open the floor for people doing comparisons between the two. I'm quite excited to see some competition in this field.

In general, the two algorithms seem to be very strongly correlated. Differences of <1dB are pretty much routine on the music I've tested so far.

This post has been edited by Canar: Jan 26 2011, 19:39


--------------------
You cannot ABX the rustling of jimmies.
No mouse? No problem.
Go to the top of the page
+Quote Post
 
Start new topic
Replies
lvqcl
post Jan 26 2011, 20:01
Post #2





Group: Developer
Posts: 3339
Joined: 2-December 07
Member No.: 49183



My test: (2124 tracks/175 albums)


Nanowar of Steel - Pino from "Other Bands Play, Nanowar Gay!": RG=-2.65, R128=+1.47 (diff=+4.12)
Endura - Cyclopean Silo from "Liber Leviathan": RG=+5.63, R128=-2.2 (diff=-7.83)
(unfortunately I have these tracks only in MP3).

added:
Aphex Twin - Xtal from "Selected Ambient Works 85-92": RG=+1.25, R128=-5.43 (diff=-6.68)

added2: upload thread

This post has been edited by lvqcl: Jan 27 2011, 01:17
Reason for edit: Hotlinked the image, because it's relevant.
Go to the top of the page
+Quote Post
GLiBERN
post Jun 18 2011, 18:31
Post #3





Group: Members
Posts: 71
Joined: 12-March 08
From: Germany
Member No.: 51979



QUOTE (lvqcl @ Jan 26 2011, 21:01) *
My test: (2124 tracks/175 albums)


I took the chance and saved the old replaygain values before rescanning my library and did the same plot:
(2904 tracks, 243 albums)


Looks almost identical to me.
I think the most noticable thing is, that very quiet tracks are boosted more than before (purple points in the top right are above the gray line).
Go to the top of the page
+Quote Post

Posts in this topic
- Canar   R128 versus ReplayGain   Jan 26 2011, 19:35
- - benski   I recently did a large analysis on a 45,000 track ...   Jan 26 2011, 19:44
- - lvqcl   My test: (2124 tracks/175 albums) Nanowar of St...   Jan 26 2011, 20:01
|- - GLiBERN   QUOTE (lvqcl @ Jan 26 2011, 21:01) My tes...   Jun 18 2011, 18:31
- - Canar   I'm not sure I'd use the word "concer...   Jan 26 2011, 20:01
- - lvqcl   From my collection of problem samples: xdrums: R1...   Jan 27 2011, 01:12
- - 2Bdecided   The couple of studies posted in the other thread s...   Jan 27 2011, 11:28
- - romor   Here are some selected releases comparison results...   Feb 3 2011, 17:09
- - Fandango   I currently have no evidence nor did I do any comp...   Feb 4 2011, 00:25
- - romor   Today I noticed an older release from Alva Noto an...   Feb 5 2011, 16:17
- - markanini   Hmm, 21.17 dB...sounds like a record.   Feb 5 2011, 16:28
- - Notat   Has anyone listened to these tracks to try and det...   Feb 5 2011, 17:06
|- - romor   I uploaded 30s FLAC for Ryoji Ikeda and unfortunat...   Feb 5 2011, 17:54
|- - Case   QUOTE (romor @ Feb 5 2011, 18:54) I uploa...   Feb 6 2011, 10:19
|- - Notat   QUOTE (romor @ Feb 5 2011, 09:54) I prefe...   Feb 7 2011, 06:09
|- - jangk   QUOTE (romor @ Feb 5 2011, 17:54) R128 is...   Feb 7 2011, 07:27
- - SamDeRe81   Interesting! So a new audio analysis utility i...   Feb 5 2011, 17:10
|- - Soap   QUOTE (SamDeRe81 @ Feb 5 2011, 11:10) Int...   Feb 5 2011, 17:28
- - romor   QUOTE (romor @ Feb 5 2011, 17:54) R128 is...   Feb 6 2011, 16:38
- - SamDeRe81   This is great, I'm definitely going to be usin...   Feb 7 2011, 03:42
- - carpman   I doubt romor is comparing 2 versions of the same ...   Feb 7 2011, 06:26
|- - Notat   QUOTE (carpman @ Feb 6 2011, 22:26) I dou...   Feb 7 2011, 17:05
|- - carpman   QUOTE (Notat @ Feb 7 2011, 16:05) You swi...   Feb 8 2011, 00:50
- - Notat   I've listened to your samples. Thanks for post...   Feb 7 2011, 16:56
- - Gecko   I rescanned my lossless collection. EBU R128 data ...   Jul 4 2011, 20:03


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: 30th July 2014 - 21:21