A ball-and-socket joint, preferably for chassis suspensions andor steering mechanisms of motor vehicles, is presented, which has a ball pivot pin, which is accommodated rotatably and tiltably in a joint housing with one of its free ends with a spherical joint area. A first encapsulation material is substantially around a first one of the solder structures and a second encapsulation material is substantially around a second one of the solder structures. Electric string instruments optionally have soft material interposed between bridge feet and a string instrument body, to allow a more resonant sound detection from a pickup located between the bridge feet and the body. Specifically a multilayer SAFT algorithm has been developed that will calculate the time shift, shift and sum A-scan waveforms in layered anisotropic media at any given depth, ply orientation, and number of plies.