ISO 389-4:1994 声学 听力设备校准用基准 第四部分：窄带遮声用参考声级.

标准编号：ISO 389-4:1994

中文名称：声学 听力设备校准用基准 第四部分：窄带遮声用参考声级.

英文名称：Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise

发布日期：1994-10

标准范围

指定纯音测听中耳机空气传导产生的窄带掩蔽噪声的参考级别。这些数据是根据添加到相应纯音频率的参考等效阈值声压级的声级给出的。给出了三分之一和五分之一倍频程的噪声带宽数据。

Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.

标准预览图