Coincidence Frequency Measurement

Speed of sound, c= ms-1
Thickness of panel, d = m
Density of panel, ρ = kgm-3
Young\'s modulus, Y =Nm-2
Coincidence frequency, fc=Hz

f c = [ sqrt(3)c2/pi*d ] * [ sqrt(ρ/Y) ]
fc = Coincidence Frequency [Hz]
c = Speed of sound in air [ms-1]
d = Thickness of panel [m]
ρ = Density of panel [kgm-3]
Y = Young\'s modulus of panel [Nm-2]