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aberration acoustic field acoustic intensity acoustical hologram acoustical holography acoustical wave amplitude angle angular array assume astigmatism Bragg Bragg angle Bragg diffraction Chapter conjugate image consider constant cos[cot cos2 density described detection detector displacement distance distortion electronic energy equations example expression F(co Figure film Fourier transform Gabor Hankel transform holo hologram aperture illumination intensity interference pattern lattice lens liquid surface longitudinal waves magnification method normal object sector obtain optical oscillator phase phase detector photograph photographic film plane wave point source propagation pulse radiation pressure reactor receiver scan reciprocal space reconstruction recording reference beam reflected resolution result sampling function scan hologram scanning system shear waves shown in Fig signal sound field source and receiver spatial frequency spectrum spherical wave technique theory tion transducer transfer function true image ultrasonic ultrasound velocity wave front wavelength zero