How pink is pink noise ?

There are some questions when aligning screening rooms speakers to SMPTE levels, one is concerning the signal to use.

The latest Dolby technical guidelines for Atmos says :

Each speaker and speaker array shall be calibrated to deliver a sound pressure level (SPL) at 85dB(c) at the reference listening position from a wideband pink noise sourcesignal at -20dBFS RMS (relative to the RMS level of a 100% modulation sine wave).

Does this mean that the pink noise RMS should be at -20dBFS or at 20dB under the RMS level of a 100% modulated sine wave (-3dBFS RMS) so -3-20 = -23dBFS RMS ?

When you begin to measure a pink noise level, you end measuring also its frequency response…

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