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Does Replay gain work differtly in Media monkey, Foobar and Media Monkey given 2 differnt Results
jimmanningjr
post Sep 3 2010, 02:57
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Hey Anyone,
For the past 2 years I have been using Media Monkey to Organize and play my music collection which is now about 42,000 tracks about 75% of my collection has Replay gain Values....I am making the switch over to Foobar2000 and was about to replay gain the other 25% with it (Foobar) when I discovered that for the same album I was getting 2 different values...and it is making me wonder does Media Monkey use a different algorithm or is there something I am overlooking...both are set to tag by ALBUM with the track value put in there also. Here are my results: blink.gif

Miles Davis /Jack Johnson Soundtrack/ crying.gif crying.gif
Trk1 Right Off -FOOBAR--Album Gain -1.97db Trk Gain -2.49db
Trk 2 Yesternow-FOOBAR Album Gain -1.97db Trk Gain -0.87db

Trk 1 Right Off Media monkey--Album Vol=-7.9db Trk Vol= -8.4db
Trk 2 Yesternow Media Monkey--Album Vol= -7.9db Trk Vol= - 6.8db

Could someone shed some light on this for me.
Thank You
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Notat
post Sep 4 2010, 17:34
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I've seen this too and was wondering if it is a Replay Gain thing or a Media Monkey thing. Seems like it's a Replay Gain thing.

Replay Gain reports a gain compensation number. This number depends on how much headroom you want to give your system to reproduce quiet but dynamic material. Originally, the standard called for a "83 dB" reference which I gather is with respect to an unconventional 0 to 96 dB scale for 16-bit audio. Most systems (bowing to the loudness war?) now implement a 89 dB reference by default. Many systems allow you to adjust the reference.

The 89 dB reference works well for popular music produced or mastered within the last 15-20 years. A lower reference is required to accommodate the dynamic range of older recordings and other generes. I personally use a 85 dB reference. The gain compensation numbers reported on my system are different than what people using an 89 dB reference report.

I've just had a look at the Replay Gain specification and find that three numbers are stored as meta data in sound files: peak level, radio (track) gain compensation, audiophile (album) gain compensation.

This means that the reference setting is only comes into play when the file is initially scanned. If I copy a file that was scanned on my (85 dB) system to a system set for an 89 dB reference, it's going to play back at the wrong (lower) level with respect to any files that have been scanned by this second system.

If I'm understanding it correctly, interoperability wise, this seems a bit broken. Wouldn't it be better to store: peak level, perceived track level, perceived album level and then compute the gain compensation immediately prior to playback based on the system's reference setting?
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Posts in this topic
- jimmanningjr   Does Replay gain work differtly in Media monkey   Sep 3 2010, 02:57
- - klonuo   perhaps your MM target level is set on 89-6 dB Ed...   Sep 3 2010, 03:06
|- - jimmanningjr   QUOTE (klonuo @ Sep 2 2010, 22:06) perhap...   Sep 3 2010, 06:20
- - 2Bdecided   It certainly looks like a 6dB offset you're se...   Sep 3 2010, 10:43
- - krabapple   QUOTE (jimmanningjr @ Sep 2 2010, 21:57) ...   Sep 4 2010, 04:27
- - Notat   I've seen this too and was wondering if it is ...   Sep 4 2010, 17:34
- - greynol   There is REPLAYGAIN_REFERENCE_LEVEL which was init...   Sep 4 2010, 17:45
|- - jimmanningjr   QUOTE (greynol @ Sep 4 2010, 12:45) There...   Sep 4 2010, 20:15
|- - Notat   QUOTE (greynol @ Sep 4 2010, 10:45) Notat...   Sep 6 2010, 03:16
|- - greynol   QUOTE (Notat @ Sep 5 2010, 19:16) I'd...   Sep 6 2010, 04:36
||- - Notat   QUOTE (greynol @ Sep 5 2010, 21:36) QUOTE...   Sep 6 2010, 22:49
|- - Teknojnky   QUOTE (Notat @ Sep 5 2010, 20:16) MediaMo...   Sep 7 2010, 16:48
|- - Notat   QUOTE (Teknojnky @ Sep 7 2010, 09:48) QUO...   Sep 8 2010, 02:40
- - Alex B   Assuming you want to have universally compatible r...   Sep 5 2010, 19:36
- - 2Bdecided   I've downloaded Media Monkey for the first tim...   Sep 6 2010, 11:02
|- - Notat   QUOTE (2Bdecided @ Sep 6 2010, 04:02) So,...   Sep 6 2010, 23:02
|- - chrisjj   QUOTE (2Bdecided @ Sep 6 2010, 11:02) MM ...   Sep 8 2010, 02:50
|- - 2Bdecided   QUOTE (chrisjj @ Sep 8 2010, 02:50) QUOTE...   Sep 8 2010, 07:38
|- - chrisjj   QUOTE (2Bdecided @ Sep 8 2010, 07:38) If ...   Sep 9 2010, 00:54
- - 2Bdecided   Notat, Maybe I didn't make it clear, so let m...   Sep 7 2010, 09:37
|- - Notat   Thanks for the clarification. What is throwing me ...   Sep 7 2010, 15:59
|- - 2Bdecided   QUOTE (Notat @ Sep 7 2010, 15:59) when I ...   Sep 7 2010, 16:45
|- - chrisjj   QUOTE (Notat @ Sep 7 2010, 15:59) What is...   Sep 8 2010, 02:47
- - greynol   Can we have an update to the site so that this doe...   Sep 8 2010, 07:51
- - 2Bdecided   Not from me. It either needs to stay as it is (an...   Sep 8 2010, 10:28
- - 2Bdecided   It was a proposed standard in July 2001. I think ...   Sep 9 2010, 11:13
|- - chrisjj   Thanks David for that explanation. QUOTE (2Bdecid...   Sep 9 2010, 12:05
|- - chrisjj   QUOTE (chrisjj @ Sep 9 2010, 12:05) QUOTE...   Sep 10 2010, 01:26
- - 2Bdecided   Well, maybe somebody can do that. http://www.yout...   Sep 9 2010, 12:55
|- - chrisjj   Agreed, but still if people want to take this forw...   Sep 9 2010, 13:05
|- - jimmanningjr   QUOTE (2Bdecided @ Sep 9 2010, 07:55) Wel...   Sep 14 2010, 00:43
- - load97   I had to register here to say thank as well! I...   Oct 13 2010, 08:30
- - 2Bdecided   QUOTE (load97 @ Oct 13 2010, 08:30) ... c...   Oct 13 2010, 10:27


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