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Mastercheck pro and integrated PLR when offset to match Metering & Analysis Plugins
Old 13th January 2018
Gear Nut
phaz's Avatar
Mastercheck pro and integrated PLR when offset to match


In Nugen Mastercheck Pro, there is an 'offset to match" function that sets the output level to the LUFS target level.

Most of the time, the target level is below the actual LUFS, so the result is that the level is lowered when "offset to match" is engaged.

Doing this, both peaks and loudness are lowered (-4dB for example).
Doing this, the integrated PLR (Peak to Loudness Ratio) value shouldn't change (at the top of the PLR strip).
But I experienced that MastercheckPro measures a PLR lowered by 4dB too !

As a test, when I lower the signal level I send to the MasterCheck, le PLR doesn't change. That's fine.

But if I use the "Offset to match" button to lower the output level to a lower LUFS target level, the PLR decreases too.

So, did I miss something, or there is an issue ?


Last edited by phaz; 18th January 2018 at 11:02 AM..
Old 18th January 2018
Gear Nut
phaz's Avatar
Simply try to set Target to -30.0 and press "Offset to match"... you'll read a NEGATIVE PLR ! That's not possible.

Wrote to Nugen.
I'll post their conclusions.
Old 25th January 2018
Gear Nut
phaz's Avatar
Ok. I can now respond to myself
I asked Nugen and they have found the problem and will release an update in «*few weeks*».

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