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测定了不同年龄无耳病史受试者对重复短声的频率辨别阈(△f)、相位别阈（△φ）、强度辨别阈（△I）及对不同频率纯音的听阈（HT），分析了△f、△φ、△I及HT与年龄的关系。所选受试者年龄范围为17－67岁，重复短声的基准频率为500pps，听阈测试纯青的频率范围为500－8000Hz。40岁以后△f、△φ、△I及HT的加龄变化甚为明显；40岁以前则只△φ、△I及8kHz的HT经统计处理后可看出随年龄而增大的变化．以实验结果（N＝190）中50百分率的函数曲线为基础计算得各种辨别阈的加龄变化方程分别为：△f=0.0024X2－0.116X＋2.116（pps），△φ=0.0010X2－0．050X＋1.343（度）及△I＝0．0004X2-0．0163X＋0．455（dB）．听阈（8kHz）的为HT=0.0424X2－2,15X＋34.94（dBnHL）。
The frequency discrimination threshold (△ f), phase difference threshold (△ φ), intensity discrimination threshold (△ I) and pure tone hearing threshold (HT) of repeated short beats were measured in subjects without any history of ear disease at different ages. △ f, △ φ, △ I and HT and the relationship between age. The subjects selected ranged in age from 17 to 67 years with a 500 ps repeat frequency of short beats and a frequency range of 500 to 8,000 Hz for hearing threshold tests. After 40 years of age △ f, △ φ, △ I and HT of aging is very obvious changes; before the age of 40 only △ φ, △ I and 8kHz of HT after statistical treatment can be seen with age and increased changes. The age-dependent variation equations of various discrimination thresholds were calculated based on the 50-percent function curve of the experimental results (N = 190): Δf = 0.0024X2-0.116X + 2.116 (pps), Δφ = 0.0010X2- 0.050X + 1.343 (degrees) and ΔI = 0.0004X2-0.0163X + 0.455 (dB). The listening threshold (8 kHz) is HT = 0.0424X2-2, 15X + 34.94 (dBnHL).