Audiofile.gp

## convert audio to data points
##   > sox file.wav file.dat

set term svg size 1200,400     ## output to SVG with given size
set output "file.svg"          ## set output file

set multiplot layout 2,1       ## set a layout in 2 rows
unset xtics                    ## removes the X-axis
unset ytics                    ## removes the Y-axis
unset key                      ## removes the legend
set grid                       ## enables grid (of enabled axis)

#set xrange [0.0:+3.0]         ## (optional) set time range
#set yrange [-0.5:+0.5]        ## (optional) set amplitude range

plot "file.dat" u 1:2 w lines t "Left" lc 1
plot "file.dat" u 1:3 w lines t "Right" lc 2

Audiofile.png

Audiofile.svg