BlueVoodoo writes “Use Linux or Microsoft Windows, the open source sndpeek program, and a simple Perl script to read specific sequences of tonal events — literally whistling, humming, or singing at your computer — and run commands based on those tones. Give your computer a short low whistle to check your e-mail or unlock your screensaver with the opening bars of Beethoven’s Fifth Symphony.”
Link: ibm.com/developerworks
