Gauz M T, Ahroon W A, Roberts S D
J Aud Res. 1981 Jan;21(1):21-8.
Normal-hearing Ss (N: 20) produced 2 sets of Bekesy threshold tracings, from 2-8 kc/s, on a conventional Grason-Stadler E-800 audiometer, and from 2-20 kc/s on a unit (HF E-800) modified for high frequencies. Half the Ss then produced at least 2 sets of tracings each in the fixed-frequency mode on the HF E-800. The pulsed-tone fixed-frequency procedure is recommended for HF HTLs. Maximum mean test-retest HTL differences of 1-4 db were obtained. Reliability r's obtained from the HF E-800 were equivalent to or surpassed those from the E-800; a very high proportion of such coefficients was statistically significant. Reduced validity coefficients, calculated at the frequencies common to the units, were attributed at least in part to differences in methods of coupling the transducers to the ear. It was concluded that the HF E-800 unit in the fixed-frequency mode could be used with some confidence to assess HF HTLs.
听力正常的受试者（N = 20）在传统的Grason-Stadler E - 800听力计上，从2至8千赫兹产生了2组贝凯西阈值描记图，在一台为高频改装的仪器（高频E - 800）上从2至20千赫兹产生了2组贝凯西阈值描记图。然后，一半的受试者在高频E - 800上以固定频率模式各自至少产生了2组描记图。对于高频听力阈值水平（HTL），推荐采用脉冲音固定频率程序。测试 - 重测的最大平均HTL差异为1至4分贝。从高频E - 800获得的可靠性相关系数（r）等同于或超过了从E - 800获得的系数；此类系数中很大一部分在统计学上具有显著性。在两台仪器共有的频率上计算得到的有效性系数降低，这至少部分归因于换能器与耳朵耦合方法的差异。得出的结论是，在固定频率模式下的高频E - 800仪器可在一定程度上放心地用于评估高频听力阈值水平。
