How Do Standing Waves in Organ Pipes Affect Sound Intensity?

[Gavroy]

hi

could somebody explain to me how organ pipes work?

so far, i figured out that there are standing waves in an organ pipe, that are determined by the length and the question of whether there is a closed or open end.

but what determines the intensity between these possible frequences(e.g. the ratio of intensity between the 1st and 2nd harmonic, is it maybe the pressure by which the air is blown into the pipes) and why do we actually here them?as i thought they where standing waves, so how do they get out of the pipe and into our ears?

sorry about my english...

 

[Drakkith]

Did you check wikipedia?
The article on organ pipes looks like it has your answers: http://en.wikipedia.org/wiki/Organ_pipe

 

[AlephZero]

There is a lot of good stuff about the physics of pipe organs here: http://www.fonema.se/