Finite-difference, time-domain analysis of a folded acoustic transmission line.
Recently designed, modern versions of renais sance woodwind instruments such as the recorder and serpent use square cross sections and a folded acoustic transmission line. Conventional microwave techniques would expect that this bend would cause unwanted reflections and impedance discontinuities. This paper analyses the folded acoustic transmission line using finite-difference, time-domain techniques and shows that the discontinuity can be compensated with by the use of a manufacturable method.
Jackson
Charles M
CM
Raytheon Space and Airborne Systems, El Segundo, CA 90245, USA. c.jackson@ieee.org