L0_src 100[dB] "Omnidirectional source sound pressure level at R0_src"
R0_src 1[m] "Reference distance"
L0_spk 0[dB] "Loudspeaker gain"
R0_spk 1[m] "Reference distance"
r_rec 0.3[m] "Receiver radius"
dt 0.01[s] "Time interval"
Nrays_min (4.34/r_rec)^2*Vol/pi/c0/dt "Recommended minimum number of released rays"
Nrays 1000*ceil(Nrays_min/1000) "Number of released rays"