The general impression of a Helmholtz resonator is that, since its dissipation is small, its tuning is fairly sharp. It is noted with some surprise, therefore, that when used as a side branch in an acoustic transmission line it affects the transmission over a wide range of frequencies. The theory, derived from the general case in the preceding abstract has been checked by experiment with resonators of varying dimensions and the theory verified to a very satisfactory degree.
Proceedings of the Iowa Academy of Science
©1924 Iowa Academy of Science, Inc.
Stewart, G. W.
"The Action of a Helmolts Resonator in a Branch Line,"
Proceedings of the Iowa Academy of Science, 31(1), 380-380.
Available at: https://scholarworks.uni.edu/pias/vol31/iss1/127