xm1 0 "Microphone 1 location, x coord"
ym1 -0.5 "Microphone 1 location, y coord"
zm1 0 "Microphone 1 location, z coord"
xm2 0 "Microphone 2 location, x coord"
ym2 0 "Microphone 2 location, y coord"
zm2 0.75 "Microphone 2 location, z coord"
dm1 sqrt(xm1^2+ym1^2+zm1^2) "Microphone 1 radial distance"
dm2 sqrt(xm2^2+ym2^2+zm2^2) "Microphone 2 radial distance"