A detailed vibration analysis is vital for industry. However, in particular in the automotive industry, one is interested in the acoustical field or in the determination of strain and stress. The acoustical field can easily be measured by microphones or intensity microprobes; however, it is also important to understand by which vibration modes the noise is emanating. TV-Holography, also called electronic speckle interferometry (ESPI), and double or multipulse (three or four) holography are two famous techniques of holography (Marwitz H., Praxis der Holographie, Expert Verlag, 1990). In speckle interferometry two images of the speckle field at different times are recorded directly with a CCD camera and then subtracted from each other by an image processing system. The resulting interference fringes are available in real time. In double pulse holography a ruby laser is triggered such that the interesting object vibration is recorded by two consecutive laser pulses. The interference fringes can be evaluated at reconstruction time by the phase shift technique, if two reference beams are used. The multi-pulse method is very useful for the investigation of operational vibration modes or of transient processes like shock waves. The calculation of the acoustical field and frequency spectrum requires the knowledge of the contour for the generation of boundary elements. The contour data can be taken either from CAD or FEM data or by measurement with optical 3D measurement systems. The acoustical field is calculated by solving the Helmholtz integral. For experimental strain and stress analysis the 3D shape and the 3D displacement are also necessary. For acoustical prediction the component of the displacement, which is perpendicular to the surface, is determined. On the other hand, for strain/stress calculation the tangential components to the surface are used.