set table "gnuplot/SAOUDI_HACHE_TP6/3.table"; set format "%.5f"
set samples 100.0; set parametric; plot [t=1:7] [] [] log10(10**t), (t < log10(1./0.00071) ? 20*log10(0.0655) : 20*log10(0.1*10.0*0.0655/(0.00071))-20*log10(10**t))+(t<log10(1/(150*0.00071))?20*log10(1):+20*log10(1*(150*0.00071))+20*log10(10**t))