LX. (i.) The end-corrections of an open organ flue-pipe; and (ii.) The acoustical conductance of orifices

Abstract

(i.) The end-correction at the mouth of an organ flue-pipe is shown to be independent of the frequency, but to depend on the dimensions of the mouth and on the sectional area of the pipe. The correction has the same value whether the pipe be open or closed, and is unaffected by the motion of the air-jet. It is shown that the correction α, in terms of A, the area of the pipe, and ω, the area of the mouth, may be represented by wherek is a constant. This is of linear dimension, as is to be expected.