set terminal png set output "peak_extend.png" f = "peak_extend.txt" set xrange [-12:0] set yrange [-18:0] set xtics -12,3,0 set ytics -18,3,0 set xlabel "input / dBFS" set ylabel "output / dBFS" set grid plot f u (log10($1/32768)*20):(log10($2/32768/16)*20) i 0 wi li title "Peak Extend Disabled", \ f u (log10($1/32768)*20):(log10($2/32768/16)*20) i 1 wi li title "Peak Extend Enabled" unset output