Default ext calibrated mic

does anyone know if an ext calibrated mic would address an app like Sound Meter if the mic is TRRS?
And be able to track true spl up to 120 or so?
"Blessed are the cracked, for they are the ones who let in the light."

Device: HTC One (M7), T-Mobile (US) S-Off
CID: T-MOB010 (PN0713000)
ROM: ViperOne 7
HBOOT 1.55
Build: 6.09.401.5
Kernel: 3.4.10
Recovery: TWRP 2.6.3.3

Previous Infestations HTC Sensation
ViperS 1.6.3
ELEGANCIA 4.1 v3.5
ARHD 6.8
Bricked 3 v1.4 lagfree
Faux
OpenSense (fave, wish dev cont'd)
CM9
CM10-20121027