Measurement of sound intensity near flue organ pipes
Matthias Scholz, Essa Ibrahim Abdugalder, Mendel Kleiner, Munetaka Yokota · The Journal of the Acoustical Society of America · 2004
Organ voicers sometime experience that organ pipes, within an organ case, acoustically couple to one another. The coupling can be not only between a pipe and its mirror image in the case wall but also between adjacent pipes tuned to the same frequency. This paper reports on intensity measurements done to see the influence of a nearby pipe on the intensity field from a sounding pipe. The sounding pipe was driven pneumatically, and the sound intensity was measured in a plane along the length axis of the pipe. The secondary pipe was positioned, in parallel at different distances, alongside the sounding pipe. The results indicate only a fairly small influence by the secondary pipe on the intensity map of the sounding pipe. [Work supported by the Chalmers Foundation.]