Computational Acoustics
   boundary element method , acoustics, sound
   http://www.soundsoft.demon.co.uk/index.htm

Fourier Synthesis and Playback
   
   http://www.phy.ntnu.edu.tw/java/sound/sound.html

The Sound of Bells
   The sound and tuning of church bells. WavAnal, a free software package, is provided for spectral analysis of bells.
   http://www.hibberts.co.uk

Underwater Recordings
   Audio clips of whales and other underwater sound sources.
   http://www.cetaceanresearch.com/sounds/