First of all, excuse me for my ignorance on this field. I was playing with some mathematical background of chanter and reach to the point where I need some clarifications.

Chanter is regarded to be one-end-closed wind instrument, right? So... the length of such pipe should be 1/4 of tone wavelength. If the chanter is G tuned (around 400 Hz) it should be less then 11 inch long. But as much I look at it, it's more then 17 inch long. (the part from reed to bell)

Where I'm wrong?

Thanks

Mipi