You can download the LiveSpectrogram_logf application for the following computers:
After downloading the zip file, you uncompress it (by double clicking, or maybe your browser will do it for you) and you should get a directory containing a double-clickable application.
You may have to do some more configuration of your system to get the right sound source feeding in to the program.
You can also download the VoicePain(t) program, which draws colors and shapes in response to what it hears:
Back to Machines Listening to Music.