Question about the noise floor for the Waterfall Graph when using the Umik-1 in Z weight and Slow;
The noise floor for the room reads around 55db on the REW SPL meter with Umik-1 set to Z weight. However, if I select C weight on the same REW SPL meter using the Umik-1, the reading is about 10db lower. So which value should I use on the Waterfall Graphs to indicate the noise floor? I would think it should be the 55db since that is what the Umik-1 displays when set to Z weight, but I don't know if the Waterfall Graph is adjusted automatically to reflect a Z weighted reading?
With the default axis range for the waterfall set at 45db on the low end, there appears to be a lot of ringing. However, if I adjust the axis to 55db, the graph looks a lot cleaner with less ringing.
HT Room:18'x13'x7.5' with 2 rows of seating. Nvidia Shield (2017), SONY UBP-X800 4K UHD Blu-ray player.
Elite Screens Edge Free Aeon Series 100 inch Cinewhite Screen & Epson 5040UB Projector.
Pioneer SC-99 & Audiosource AD1002 for Atmos & DTS:X 7.2.4
Andrew Jones Pioneer Elite SP-EFS73 Mains, SP-EC73 Center, SP-EBS73-LR Rear Surrounds, SP-BS41-LR Side Surrounds & Dual SVS SB12-NSD Subs with MiniDSP 2x4 Tuned with REW and MSO.