[quote author=j142 link=topic=19.msg3381#msg3381 date=1233124156]
Any sound file can be uploaded in this applet?

like that is available in fourier sysnthesis? so we can acually hear the effects like beats, cancellation of waves, addition of waves etc

Also if we add phase differece between the waves then it will be a perfect simulation to make anyone understand the wave superposition principle.

Good idea but please do it on EJS, so everyone can see, learn and do