More > JRiver Media Center 18 for Windows
NEW: Loudness
Trumpetguy:
--- Quote from: Matt on January 05, 2013, 08:40:56 am ---I'd like to make it easier for users to calibrate to reference level. Adding to our test clip creation system, and writing a wiki is probably all that will be required.
--- End quote ---
Sounds great! +1
preproman:
Where can I find this loudness option?
nwboater:
--- Quote from: preproman on January 05, 2013, 07:28:47 pm ---Where can I find this loudness option?
--- End quote ---
In Standard View near the upper left is a small speaker icon. Click on that and Loudness enable will be at the bottom: But only if you are using Internal Volume, which is selected from the same icon.
Rod
Matt:
I put directions for volume reference level calibration here:
http://wiki.jriver.com/index.php/Volume#Reference_Level_Calibration
Please note that you'll need MC18.0.108 or newer (coming soon).
There's some disagreement about the level in a "-20dB pink noise file." I calibrated our pink noise generator to match the reference file that ReplayGain is built around. It would be helpful to see if ReplayGain agrees with the Blu-ray calibration discs mentioned above (hopefully it will, or else I think it'd be a ReplayGain issue).
This is the standard ReplayGain -20dB pink noise calibration file:
http://replaygain.hydrogenaudio.org/proposal/ref_pink.wav
hulkss:
I recommend using the files freely available here courtesy of Bob Katz and Digital Domain:
http://www.digido.com/media/downloads/category/12-general.html
Use the Pink Noise 500-2K -20 dBFS RMS files.
Improved measurement accuracy if narrow-band pink noise is used
There are many sources of inaccuracy when determining monitor gain when using pink noise. Using wideband (20-20 kHz) pink noise and a simple RMS meter can result in low frequency errors due to standing waves in the room, high frequency errors due to off-axis response of the microphone, and variations in filter characteristics of inexpensive sound level meters. For the most accurate measurement, use narrow-band pink noise limited 500-2kHz, whose RMS level is -20 dBFS. This noise will read the same level on SPL meters with flat response, A weighting, or C weighting, eliminating several variables.
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