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General expression

In this section we will derive the general equations resulting from matching the acoustic pressure and velocity fields on the air shared at a discontinuous join between two tubes of differing cross-sectional area. The geometry we are considering is shown in figure B.1.

Figure B.1: Detail of a waveguide consisting of straight sections of length $d$ joined discontinuously
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\epsfig{figure=chapter2/disc.eps, width=5cm} \end{center}\end{figure}



Subsections

Jonathan Kemp 2003-03-24