A PDP-8 FORTRAN PROGRAM FOR REDUCTION OF ACOUSTIC IMPEDANCE DATA.
NAVAL RESEARCH LAB WASHINGTON D C
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A FORTRAN program was developed to compute the propagation constants of a sample of material from measured values of the complex reflection coefficient, the sample density, and the sample thickness. Because the equations relating the reflection coefficient to the propagation constants are transcendental and cannot be solved algebraically for the attenuation and sound speed, the technique is to assume a pair of values and use the method of successive approximations. The program and its present limitations are discussed, and sample computations are presented. Author