set output 'flute_spec.ps' 
set term postscript color enhanced 'Helvetica,18'  
set style line 1 lt rgb 'red' lw 3  
set style line 2 lt rgb 'sea-green' lw 3  
set style line 3 lt rgb 'blue' lw 3  
set style line 4 lt rgb 'cyan' lw 3  
set style line 5 lt rgb 'violet' lw 3  
set grid 
set key top right 
set xzeroaxis  lw 3.5 
set yzeroaxis  lw 3.5 
set samples 500  
set ylabel 'Log (Sound Intensity)  '  
set xlabel 'Frequency (Hz)' 
set title 'A3 = 220 Hz ' 
plot [0:3000][0:0.7] './sine_220.txt' using 1:(8.05+10**($2/100))         with lines ls 1 lw 6 t ''  ,                 './bass_flute_a3.txt' using 1:(-0.1+10**($2/100))         with lines ls 3 lw 3 t 'viola'  
set output 
quit 
