a 0.01[m] Tube radius
L 0.05[m] Tube length
Rv 0.05[m] Volume radius
c_air 343[m/s] Speed of sound
gamma 0.82 End-correction factor
f_theo c_air/(2*pi)*sqrt(a^2/((L+gamma*a)*4/3*Rv^3)) Lumped-parameter resonance frequency
fmax 6000 Maximum frequency for sweep
fmin 0.1 Minimum frequency for sweep
rho_air 1.2[kg/m^3] Density of air