Musket C H, Roeser R J
J Speech Hear Res. 1977 Jun;20(2):325-33. doi: 10.1044/jshr.2002.325.
Pure-tone thresholds were obtained from 24 children between the ages of eight and 13 years using a standard, supraaural cushion (MX-41/AR), and one of four circumaural cushions. Testing was performed in quiet and in the presence of wideband noise presented at 60 dB SPL fro three conditions: Condition 1 (test) used a TDH 39 driver mounted in the MX-41/AR cushion; Condition 2 (experimental) used the same TDH 39 driver mounted in one of the circumaural cushions under investigation; and Condition 3 (retest) which was the same as Condition 1. Statistically significant differences were found between thresholds with the MX-41/AR cushion and thresholds with one of the circumaural enclosures in quiet. In noise, thresholds with three of the circumaural enclosures were significantly lower than those with the MX-41/AR cushion. A significant test/retest difference was observed for the MX-41/AR cushion at 6000 Hz in quiet only.
使用标准的耳上软垫（MX - 41/AR）和四种耳周软垫之一，对24名8至13岁的儿童进行了纯音阈值测试。测试分别在安静环境以及存在60 dB SPL宽带噪声的三种条件下进行：条件1（测试）使用安装在MX - 41/AR软垫中的TDH 39驱动单元；条件2（实验）使用安装在所研究的一种耳周软垫中的相同TDH 39驱动单元；条件3（重新测试）与条件1相同。在安静环境中，发现使用MX - 41/AR软垫时的阈值与使用一种耳周罩时的阈值之间存在统计学上的显著差异。在噪声环境中，三种耳周罩的阈值显著低于使用MX - 41/AR软垫时的阈值。仅在安静环境下，观察到MX - 41/AR软垫在6000 Hz时存在显著的测试/重新测试差异。
