$ 0 0 Sound waves, Wave equations, Speed of sound, The Ear, Speed of sound, Sounds are waves, Intensity, Pitch, Timbre. http://vcephysics.podomatic.com/enclosure/2011-08-16T14_46_42-07_00.mp4 Download the notes. Download the video. Links: http://www.walter-fendt.de/ph14e/stlwaves.htm http://en.wikipedia.org/wiki/Ear