\f1:52 Of LTE Lab5_DataAnalysis Done sigPowerv (1)=Powerv(1)*0 .10; subplot (3, 1, 2) %set (gcf, 'PaperPosition' , [0. 2 0.2 4 3]) ; SPLdata3b=load ( ' - ascii' , 'M3_MediumVolumeSPL . dat' ) ; time3b=SPLdata3b ( : , 1) ; SPL3b=SPLdata3b ( : , 2) ; plot ( time3b , SPL3b, 'o' , 'Markerfacecolor' , 'b' Xbar3b=mean ( SPL3b ) sigmaX3b=std ( SPL3b ) sigmaMean3b=sigmaX3b/sqrt (length (SPL3b ) ) ; ylabel( 'SPL (db) ' ) ; xlabel ( ' time (sec) ' ) ; title ( 'Medium Volume ' ) ax1=gca ; ax3=axes ( ' Position' , get (ax1, 'Position' ) , 'XL im' , [0 1], 'YLim' , [0 1]) ; set (ax3, 'Visible' , 'off' ) meant3b=[ 'mean = ' , num2str (Xbar3b, 3) , 'db' ]; text (0. 8, 0.3, meant3b ) ; sigt3b=[ ' \\sigma = , num2str(sigmaX3b , 1) , 'db' ]; text (0 . 8, 0.2, sigt3b) ; sign3b=[ ' \\sigma_{mean} = , num2str (sigmaMean3b , 1) , 'db' ]; text (0. 8, 0.1, sigm3b ) ; text(0 . 9, 0.9, ' (b) ' ) ; Pv (2) =Po*10^ (Xbar3b/20) ; sigPV (2)=Po/20*log (10)*10^ (Xbar3b/20) ; speedsound=327.0; %m/s rhoair=1.32; %kg/m^3 Iv (2) =Pv(2) ^2/ (2*rhoair*speedsound ) ; Powerv ( 2) =IV(2)*4*pi* (63 . 0/100) ^2 sigPowerv (2) =Powerv (2)*0. 10; subplot (3, 1, 3) ro 071\f1:52 Of LTE Lab5_DataAnalysis Done clear all close all figure set (gcf, 'PaperPosition' , [0.2 0.2 8 8]) ; subplot ( 2, 1, 1) Po=2*10^-5; %Measurement 1 SPLdata=load ( '-ascii' , 'AmplitudesM1 . dat' ) ; time=SPLdata( : , 1) ; SPL=SPLdata( : , 2) ; plot ( time , SPL, 'o' , 'Markerfacecolor' , 'r', 'co lor', 'r' ) Xbar=mean ( SPL) sigmaX=std ( SPL) sigmaMean=sigmaX/sqrt (length (SPL) ) ; ylabel( 'SPL (db) ' ) ; xlabel ( 'time (sec) ' ) ; title ('L_1=38.5 cm \\pm 0.3 cm' ) ax1=gca ; ax3=axes ( ' Position' , get (ax1, 'Position' ) , 'XL im' , [0 1], 'YLim' , [0 1]) ; set (ax3, 'Visible' , 'off' ) meant=[ 'mean = ' , num2str (Xbar, 3), 'db' ]; text (0 . 8, 0. 3, meant ) ; sigt=[ ' \\sigma = ', num2str (sigmaX, 1) , 'db' ]; text (0 . 8, 0. 2, sigt ) ; sign=[ ' \\sigma_{mean} = ', num2str (sigmaMean , 1) , 'db' ]; text (0. 8, 0.1, sigm) ; text (0 . 9, 0.9, ' (a) ' ) ; P(1)=Po*10^ (Xbar/20) ; sigP (1) =Po/20*log(10)*10^ (Xbar/20) ; speedsound=327.0; %m/ s Deltavelocity=325. 18-328. 25; DeltaT=-10-(-5) ; T=-7; m2=Deltavelocity/DeltaT; h?=298 25-m?*-5 .1:52 Ol LTE ED Q 5 of 5 +