L 49[mm] Tube length
a 0.5[mm] Tube radius
a_mic 0.5*0.25[in] Microphone radius
a_cpl 4.7[mm] Coupler radius
Vrms 0.17[V] RMS driving voltage
V0 sqrt(2)*Vrms Peak driving voltage
Cmic 6[mm^3]/(1.4*p0) Microphone acoustic compliance
Lmic 2500[kg/m^4] Microphone acoustic mass
Rmic 1200e6[N*s/m^5] Microphone acoustic resistance
T0 20[degC] Ambient temperature
p0 1[atm] Atmospheric pressure