Beattie R C, Culibrk J
Ear Hear. 1980 Sep-Oct;1(5):242-8. doi: 10.1097/00003446-198009000-00003.
The effects of a competing message on the speech comfortable loudness level (CLL) was compared for two instructional sets in 2 conditions of quiet and in the presence of a four-talker babble competing message. Kopra and Blosser's (24) instructions were selected to sample the middle of the CLL range, whereas Lucker et al.'s (27) instructions sampled the upper limit of the CLL range. Two groups of 12 normal-hearing subjects were tested using a method of adjustment. The results indicated no significant differences between the initial and final CLL's in quiet. However, data for each instructional set showed that the CLL's obtained with Lucker et al.'s phraseology (97.8 dB SPL) was significantly higher than with Kopra and Blosser's instructions (75.2 dB SPL). The four-talker babble served to raise the CLL, although less effect was observed on the upper limit of the CLL range than for the middle portion of this range. The clinical implications of these findings are discussed.
在安静和存在四说话者嘈杂竞争信息这两种条件下，比较了两种教学集的竞争信息对言语舒适响度级（CLL）的影响。选择了科普拉和布洛瑟（24）的指令来抽样CLL范围的中间值，而卢克等人（27）的指令抽样CLL范围的上限。使用调整法对两组各12名听力正常的受试者进行了测试。结果表明，安静环境中初始和最终的CLL之间无显著差异。然而，每个教学集的数据显示，使用卢克等人措辞获得的CLL（97.8 dB SPL）显著高于使用科普拉和布洛瑟指令获得的CLL（75.2 dB SPL）。四说话者嘈杂声提高了CLL，尽管对CLL范围上限的影响比对该范围中间部分的影响小。讨论了这些发现的临床意义。
