Die Abstrahlung von Impulsen durch ebene Kolbenmembranen in starrer Wand

When impulses are radiated from a rigid disk a distortion occurs which is a function of the direction of radiation, for the individual components in the spectrum of the impulse have different direction characteristics, depending on the frequency. Calculation shows that a radiated unit impulse can be considered as composed of partial impulses from surface-elements of the disk and is conditioned by the shape of the latter. With a given impulse form one obtains a resultant effect of the shapes of the impulse and of the disk.