自由场中正常青年人扩展低频听阈测试

Threshold of Hearing for Extended Low-Frequency Pure-tones under Free-field Listening Conditions

邢光前;卜行宽;李芳丽;杨舜英;陆玲

1:南京医科大学附一医院耳鼻咽喉科

2:南京医科大学附一医院耳鼻咽喉科

3:南京医科大学附一医院耳鼻咽喉科

4:南京医科大学附一医院耳鼻咽喉科

摘要
为建立扩展低频测听的基准阈声压级,探讨影响结果的有关变量,在消声室中测试了30名耳科正常青年人的纯音声场听阈和7名受试者振动阈值,频率包括40HZ~4kHZ.结果(1)各受试者听阈沿其算术均数呈正态分布,扩展低频区阈值明显高于常规频区;(2)振动感仅出现于40~500HZ,各频率振动阈平均高于相应听阈34dB以上.文中结果同ISO 226-1987及国外有关资料进行了比较.分析表明,测听室环境噪声、所用信号的谐波失真及频率稳定性乃影响扩展低频测试结果的主要变量.
关键词
听力检查;听力;自由场
基金项目(Foundation):
江苏省科委基金资助
作者
邢光前;卜行宽;李芳丽;杨舜英;陆玲
参考文献

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