Sound
        High school physics and chemistry      www.physchem.info
Standing Longitudinal waves and tubes
Standing waves in stuff
Hear beat frequency in sound
Beat Frequency between two similar waves
Reflection, Refraction, Diffraction
Doppler effect + shock waves + supersonic jets
Doppler Effect
Sound produced by a tuning fork
Hear different shaped waves
Interference in sound
Hear as harmonics are added to sound
Harmonics on a string
Diffraction
MUSIC
The 12 tone music scale
Make and play square waves etc.: choose "fournier series"         
         and then hit the "back" button to make it work.
"See" with your EARS!
A great site for Sound/Waves/Music etc
Musical Instruments !!!!
3 instruments
Brass instruments
....The Human ear as a closed tube
Woodwinds
.....Play the Piano and listen to it
Guitar sounds
.....Science and the Stradivarius
Musical instruments and sound....and a lot more
Acoustical Society of America:             Lots of weird sounds
All about computer synthesized sounds
Reverberation times compared in sound  
.Interactive applet  
    on Sound
..Download and
...keep applet
.....Violin standing waves
....The Physics of Music
Elementary source for SOUND