'Quasi free-field' audiometry: proposal for a modified transducer system.

The authors studied a group of 13 young adults by using high-frequency techniques in 'quasi free-field' conditions, as suggested by Osterhammel, and comparing the results with those obtained by means of an original method suggested by the present study group. The data relative to this last-mentioned technique confirmed it as being valid on the grounds of test-retest findings and standard deviation. It is concluded that both methods are equally effective for the study of the physiology of the ear, but that the present method is less practical from the clinical point of view.