I dug into this a bit more. Getting the time & amplitude data out of the WAV file was easy with sox file.wav -t dat - | tail -n +3 > file.dat My beloved xgraph is not available on Fedora anymore. That made me relearn gnuplot, a good move regardless. I wrote a script to build a gnuplot input file, file.gpl, which contains something like set terminal png notransparent nocrop set output file.png plot [] [-1:1] "file.dat" with lines Then I run gnuplot on its input file like so gnuplot file.gpl > file.png I left out a lot of housekeeping related to my scripting. But, the above does all of the work needed to produce a nice graph of my audio files. Of course, this isn't fast. It takes about 4 minutes on my 3.4GHz i7 with 16GB of RAM to create a plot from a 0.5GB mono WAV file. Audacity and Ardour are faster than sox + gnuplot at creating their waveform views. But, I can script with sox + gnuplot. I hope this is useful for someone trolling the archive someday. Cheerio... -- Kevin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
