 Acoustic noise emanating from devices such as transformers, motors and actuators can be measured in the hemi-anechoic acoustic chamber using calibrated microphones.In 1969 a grant from the Wolfson Foundation of £132,000 was awarded to the University of Wales Institute of Science and Technology (UWIST) to establish a research centre to carry out basic and applied studies on magnetic materials and their industrial applications.Professor Jack E. Thompson was appointed the Director of the Wolfson Centre for the Technology of Soft Magnetic Materials.