Yes there was, disregard all that I've said, you're made of pure genius
Really, really awesome.
Bare with me Neutro...you've almost got me there.
The bolded above: isn't what is known is that SPL and PVL are either perfectly in phase or perfectly out of phase? If measuring SPL alone in the far field, how do you know if it's in phase or out of phase with PVL with just an SPL meter?
You're a physicist and an English professor? Now I'm in real trouble, lol! Good catch.
Take me through this example: let's assume we are measuring in the far field and we happen to be measuring in a room mode (null), but we don't know that we are. The SPL meter would register a reading of 65db. In order to calculate Sound Intensity, wouldn't you have to know if it is a null or not? In a null, it would essentially be zero, but in a peak, it would be much more. How would you know from just the SPL? Hope that makes sense...
I'd just run a sine wave...limits the variables more.
If you want to play a scene, maybe WOTW, or Black Hawk Down?
Not sure about the other parts of the movie, but the famous F'n Irene scene goes down to 7hz. You'll need a multi-sealed sub setup preferably in a smaller room to be able to produce that scene properly.
My calibration settings say 30+12 (not sure what that means). But when I adjust the 12 to a higher number, it becomes more sensitive.
Make sure your phone/tablet does not have a case and is on a flat surface. Run the app and tap just right below the graph so it does not reset the meter. The tap should be just a normal tap; not too hard and not to soft. When I do this, I typically register from .75 to 1.25 on the scale. Adjust your calibration so that when you tap, it is generally in that range.
My thought here is that because your front row is closer to your subs, particle velocity (PVL) is more intense at those positions.
I'm sure Wikipedia can do a better job, but here's how I understand particle velocity:
It is NOT the speed of the wave (speed of sound). Rather, it is the fast oscillation of the particles of the medium (in this case air) traveling IN the sound wave. The wave propagates because of the pressure changes and also propagates because of the oscillation of the particles of air, or particle velocity. IMO, the effect of your hair standing up and the 'tingly feeling' you experienced was because of the PVL. As the sound wave passed over your body, the oscillation of the particles of air (particle velocity) caused your hair to 'swirl' and produce the 'tingly feeling'.
That would be my guess as well.
As for why the meter was the same? Not sure why...especially because you said there was more shake in the back row. Regardless of what you experienced, the meter said you had the same amount of couch shake on the seat cushions of your front and back row. It could be that the shake you experience in the back row was driven by the floor, and thus 'felt stronger', whereas the front row was more localized since on concrete?
Just for frame of reference, my mean on the Pod scene is around 5, and I peak at 7.5 or so. Of course, I've never gotten that 'tingly' feeling you speak of either...well, from subwoofers anyway.