More > JRiver Media Center 19 for Windows
NEW: Improved audio analysis and volume leveling (R128)
Matt:
--- Quote from: jhermosillo on September 05, 2013, 04:34:14 pm ---you are right, if I combine EQ with effects it is when clips, if i do one or the other it is ok. This should be fixed in some way. because in EQ i really do a very slight change also on effects adding a little environment.
Thanks
--- End quote ---
Volume leveling happens on the input signal. It is completely independent of later processing like EQ.
If you apply effects that could cause clipping, you have a few choices:
1) Switch to Internal Volume. This is my favorite solution, but I understand it only works well in some installations. Explanation here: http://wiki.jriver.com/index.php/Volume#Internal_Volume_Headroom
2) Add an effect to turn the volume down (equalizer preamp, parametric volume reduction, etc.). It doesn't matter where in the chain, since it's not a clip until output.
3) Just let the final safety valve detect the clip and turn the volume down. This is less of an audiophile solution, but the real world results will be pretty good.
Gl3nn:
Probably a dumb question: the results of the analysis are stored in the library? So if, for instance, I have a need to restore/re-image my machine to a pre-analysis period, simply restoring a saved backup would have all the analysis data? No need to re-do?
MrC:
The analysis data is stored in the library, and by default in the new tags (and some compatibility tags which are auto-generated). These are stored in file tags, so an Update Library (from tags) would re-read them:
MC Tags:
Dynamic Range (DR)
Dynamic Range (R128)
Peak Level (R128)
Peak Level (Sample)
Volume Level (R128)
Volume Level (ReplayGain)
Compatibility Tags:
REPLAYGAIN_TRACK_GAIN
REPLAYGAIN_TRACK_PEAK
Gl3nn:
Thanks, MrC!
BayensF:
--- Quote from: Matt on July 17, 2013, 12:05:40 pm ---MC19 makes several important improvements to audio analysis and volume leveling:
[*]Adoption of the R128 industry standard to analyze the loudness and dynamic range of content
[*]Ability to analyze audio for video files, including surround sound
[*]Smarter Volume Leveling that automatically respects intentional between track levels when playing from an album
[*]Volume Leveling works together with Adaptive Volume's peak level normalization
[*]Peak level is reported in decibels, measured as an R128 compliant True Peak, and reported per channel
This is a big topic, so I'll try to revisit it and post more details about the changes and the motivation at a later date.
--- End quote ---
Hi,
This is another very good and usefull addition in MC, and still under development I hope. During the development please make sure Stereo Playback from Video is taken care off. To me it seems that the impact on Stereo Video playback is huge. If I play 24/96 Audio files from CD I have an Audiophile performance, when playing this kind of format from Music Video it's not (dynamics are gone) Playing around with Adaptive Volume does not do much good. So my request, please make sure that Stereo Streams from Video are handled without tweaking, I would like it pure, Audiophile....
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