Laser vibrometry acts as an important method for the investigation of biomcchanical and acoustical characteristics of sound transmission inside the middle ear. Now it became a research tool, but might extend its applications to the clinical routine too. Up to now the instrumentational equipment is pretty large (signal analyzer/generator, amplifier, universal measuring instruments/oscilloscopes, operational microscope, laser vibrometer,...). This paper presents a solution, that integrates parts of the signal conversion and generation, the signal processing and analyzing into a notebook PC and eventually realizes a portable measuring system.