gofar99 Messages: 1939 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi, The problem with apps is that they rely on the phone microphone. It is not as wide band as you really need and its calibration (if any) is a joke. A cheap solution is to find a used Radio Shack sound level meter. Either the analog one or the digital one. They are reasonably accurate and a lot better than the phone. In my system I personally use a calibrated mic and feed it into a Behringer DEQ2496 or alternative into an I7 ASUS laptop with suitable software. Even then I suspect that the accuracy is still only in the 95% range.