15问答网 > 人耳纯音听阈曲线的测定中什么叫听力级

人耳纯音听阈曲线的测定中什么叫听力级

2025-04-07 01:55:11
推荐回答（1个）
回答1：

听力损伤分级
a) 任一耳听力损失达V级者，按附录B的B.2计算双耳平均听阈，评定听力损伤及噪声聋；
b) 凡高频（3 000，4 000，6 000 HZ）任一频率听力下降≥30 dB，可按附录 B的 B.2直接计算双耳平均听阈，评定听力损伤。
5.1 轻度听力损伤 26～40 dB
5.2 中度听力损伤 41～55 dB
5.3 重度听力损伤 56～70 dB
5.4 噪声聋 71～90 dB

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