Osterhammel D, Osterhammel P, Terkildsen K
Scand Audiol. 1977;6(2):91-5. doi: 10.3109/01050397709045004.
Previous attempts to measure human hearing capacity in the high frequencies (8 to 20 kHz) have only been met with rather limited success. Based on the results of Shaw and co-workers we have developed a free-field transducer system where the stimuli are delivered from a point source and meet the ear as plane progressive waves at a carefully chosen angle of incidence. The system can be calibrated in a precise manner by means of a specially designed coupler. Preliminary results indicate that the procedure is easily applicable also in a group of inexperienced test subjects and the test-retest variability was within such limits that are acceptable for subjective audiometric testing. These results require validation in a large group of subjects and we hope it will be possible to establish normative values for various age groups.
以往在测量人类高频（8至20千赫）听力能力方面的尝试，取得的成功相当有限。基于肖及其同事的研究结果，我们开发了一种自由场换能器系统，该系统中刺激信号从点声源发出，并以精心选择的入射角作为平面行波抵达耳朵。借助专门设计的耦合器，该系统能够以精确的方式进行校准。初步结果表明，该程序在一组缺乏经验的测试对象中也易于应用，并且重测变异性处于主观听力测试可接受的范围内。这些结果需要在大量受试者中进行验证，我们希望能够为不同年龄组建立标准值。
