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4th Newsletter published!

The 4th project newsletter has been published. It comes with a lot of interesting issues and news from all parts of the project.

This issue contains an article on Magnetoencephalography work, reports on a new method for transient calibration of ear simulators and on the development of a measurement procedure for airborne ultrasound. The longitudinal study on effects of infra- and ultrasound on human cognition and the confusion of amplitude modulated sound with infrasound are issued. Moreover, you'll find the announcement of three workshops that will be held in 2019 on the results of the project. The business card of the Swiss national metrology institute, METAS, finalises the newsletter.