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目的 了解测试环境对纯音气导测定结果的影响。方法 分别在65dBA环境和隔音室(<30dBA)环境下测试44耳并记录 0.5K、1K、2K、4K频段纯音听阈。结果 环境噪声对 0.5K、1K影响有显著性,2K、4K不明显;0.5K频段下听阈没有相关性,1K频段有一定显著相关性,呈一定函数关系。结论 测试环境对结果的影响不均等,主要与其噪声频率有关,故不能凭经验修正测试听阈,纯音测试一定要在隔音环境(<30dBA)下进行。
Objective To understand the influence of test environment on the results of pure tone air conduction measurement. Methods 44 ears were tested in 65dBA environment and soundproof room (<30dBA) respectively and the pure tone hearing threshold of 0.5K, 1K, 2K and 4K was recorded. Results The environmental noise had a significant effect on 0.5K and 1K, but it was not obvious at 2K and 4K. The threshold of hearing at 0.5K band had no correlation, and there was a significant correlation between 1K band and some extent. Conclusion The test environment has an unequal impact on the results, mainly related to its noise frequency. Therefore, the test threshold can not be corrected by experience. The pure tone test must be performed in a soundproof environment (<30dBA).