Musical Sounds
Consider a hollow pipe open at both ends
a wave reflects even if the end is open =>free ‘end’ =>anti-node
Fundamental or first harmonic
f1 = v/? = v/2L
In general, ?n=2L/n n=1,2,3,…
fn = v/ ?n =nv/2L
for L=.4m, v=343m/s, f1=429Hz
Note: pressure has a
node but displaement
an anti-node
Previous slide
Next slide
Back to first slide
View graphic version