Richter Utz, Fedtke Thomas
Physikalisch-Technische Bundesanstalt, Braunschweig, Germany.
Int J Audiol. 2005 Aug;44(8):478-87. doi: 10.1080/14992020500060230.
Intended as an input to international standardisation, this study investigated reference hearing thresholds for the calibration of audiometric equipment, which have been determined using 'clicks' as test signals, several kinds of earphones, and two types of transducers (a loudspeaker and a bone vibrator). The threshold measurements were carried out with groups of 25 test persons with normal hearing capability following as far as possible the ISO-preferred test conditions. The influence of different parameters on the results, such as click duration, polarisation mode, repetition rate, gender and age of the test persons, or type of ear simulator, was studied. The results mainly depend on the type of ear simulator used to calibrate corresponding audiometers. Together with the results of another investigation carried out in Denmark, the data of the present study shall form the basis for the coming International Standard ISO 389-6 on reference hearing thresholds for acoustic test signals of short duration.
作为国际标准化的一项输入内容，本研究调查了用于听力计设备校准的参考听力阈值，这些阈值是使用“ clicks”作为测试信号、几种耳机以及两种换能器（扬声器和骨振动器）确定的。阈值测量是在25名听力正常的测试人员组中进行的，尽可能遵循ISO推荐的测试条件。研究了不同参数对结果的影响，例如点击持续时间、极化模式、重复率、测试人员的性别和年龄或耳模拟器类型。结果主要取决于用于校准相应听力计的耳模拟器类型。与丹麦进行的另一项调查结果一起，本研究的数据将为即将出台的关于短持续时间声学测试信号参考听力阈值的国际标准ISO 389-6奠定基础。
