http://www.kettering.edu/~drussell/Demos/waves-intro/waves-intro.html
http://www.kettering.edu/~drussell/Demos/rad2/mdq.html
http://www.kettering.edu/~drussell/Demos/superposition/superposition.html
http://gweep.net/~shifty/java/fs.html
http://www.valdosta.edu/~cbarnbau/math_demos_folder/FT/sawtooth.htm#
http://www.owlnet.rice.edu/~psyc351/Images/Timbre1.jpg
http://www.unmc.edu/Physiology/Mann/pix_8/ear.gif
http://www.silcom.com/~aludwig/images/Fletcher-Munson.jpg
http://www.owlnet.rice.edu/~psyc351/Images/EquiloudnessContours.jpg
http://www.colorado.edu/kines/Class/IPHY3430-200/image/cochlea.jpg
http://www.hoorzaken.nl/de_cochlea.htm
http://members.aol.com/tonyjeffs/pics/cortism.gif
http://www.hei.org/news/facts/normalhaircell.jpg
http://media.collegepublisher.com/media/paper851/stills/4368577ae58d7-46-1.jpg
http://www.du.edu/~kinnamon/3640/hearing/hearing.html
http://www.rockefeller.edu/labheads/hudspeth/graphicalSimulations.php
http://www.vimm.it/cochlea/cochleapages/theory/bm/spiral.gif
http://www.avatar.com.au/courses/PPofM/consonance/percept.html