1. BS EN IEC 60318-8. Electroacoustics. Simulators of human head and ear. Part 8. Acoustic coupler for high-frequency measurements of hearing aids and earphones coupled to the ear by means of ear inserts (29th May 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (31 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗