Transducers are usually clamped in a relatively large baffle and measured under anechoic conditions to approximate perfect acoustical half-space conditions. A new acoustical near field method is presented that uses an extremely small ROUND baffle at least 10 cm around the transducer and can be operated in a normal office, workshop, or any other environment. Holographic post-processing removes the acoustical short-cut and baffle reflections and suppresses room modes and gives accurate data in the near and far-field. Exploiting the symmetry of the transducer reduces the measurement time to 5 minutes while providing full directivity information. The near field scanner is a small add-on to the KLIPPEL laser vibrometer using the same robotics. This seminar discusses important electrical, mechanical, and acoustical measurement performed on the SCN work-bench according to IEC 60268-21 and 22.
