May. 23, 2017
By Alinda Wolthuis and Leendert van der Ent In the second half of the 19th century, a variety of audiometers were invented. These early audiometers were known as ‘induction-coil audiometers’ – their invention followed the development of the induction coil in 1849 and audio transducers in 1876. In 1885, Arthur Hartmann designed an ‘Auditory Chart’, which included left and right