目的应用同频音掩蔽试验观察不同个体最小对侧掩蔽级(MCML)与主观纯音听阈之间的关系，进而通过MCML判定被试者主观真实听阈。
Objective to investigate the relationship between minimum contralateral masking level (MCML) and pure tone threshold of the masking ears by the same frequency tone masking test.
方法30例受试者(60耳)分别进行纯音测听，首先测出双耳的纯音听阈，然后应用同频音掩蔽试验测试各个频率的MCML。
Methods the pure tone thresholds of 30 subjects (60 ears) were measured by pure tone audiometry and MCML was obtained by means of the same frequency tone masking test.
不同声压级下窄带噪声对纯音同时掩蔽效应的实验结果表明：掩蔽曲线可以用两段直线来近似。
Experiments on simultaneous mask effect where tones were masked by narrow-band noises with different SPL showed that the masking curve could be approximated as two segments of straight line.
不同声压级下窄带噪声对纯音同时掩蔽效应的实验结果表明：掩蔽曲线可以用两段直线来近似。
Experiments on simultaneous mask effect where tones were masked by narrow-band noises with different SPL showed that the masking curve could be approximated as two segments of straight line.
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