Higher modes of flute: example
f1 first mode (fundamental) 260Hz
f2 = 2f1 second mode (first overtone) 520Hz
f3 = 3f1 third mode (second overtone) 780Hz
fn = nf1 MODES ARE HARMONICS
demo: modes of pipe - plastic tube
graphs of pressure and air velocity on blackboard
at pressure node air speed has antinode
at pressure antinode air speed had node why?
| Previous slide | Next slide | Back to first slide | View graphic version |