掩蔽噪声 meaning in English

masking noise

Reference levels for narrow - band masking noise
窄带掩蔽噪声的基准级
Acoustics - reference zero for the calibration of audiometric equipment - reference levels for narrow - band masking noise
声学.测听设备的校准参照区.掩蔽噪声的参考等级
Acoustics - reference zero for the calibration of audiometric equipment - part 4 : reference levels for narrow - band masking noise
声学校准测听设备的基准零级第4部分：窄带掩蔽噪声的基准级