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…