%(MM1902.m plot)
Hz=[20:10:100 200:100:1000 1500 2000:1000:10000]; % frequencies in Hertzspl=[76 66 59 54 49 46 43 40 38 22 ... % sound pressure level in dB 14 9 6 3.5 2.5 1.4 0.7 0 -1 -3 ... -8 -7 -2 2 7 9 11 12];semilogx(Hz,spl,'-o')xlabel('Frequency, Hz')ylabel('Relative Sound Pressure Level, dB')title('Figure 19.2: Threshold of Human Hearing')grid on