Berger K W, Shiplett L L
J Aud Res. 1982 Jan;22(1):61-4.
Most Comfortable Loudness (MCL) was determined for each of 10 normal-hearing young adults using pulsed pure-tone trains and damped wave trains (DWTs) each at 2.5/sec, at frequencies of .25 and 2 kc/s; 4 MCLs were determined for each of the 4 signal type/frequency combinations. In a bracketing procedure employing steps of 20, 10, and finally 5 db, Ss were permitted to respond only "loud" or "soft" to each short train. Group mean test-retest differences within each stimulus type/frequency combination were only 1-2.5 db for all possible test-to-contiguous-test comparisons, i.e., better than with most other MCL procedures except the descending series in the Method of Limits. However, individual Ss differed by from 15-35 db within the 16 distributions (2 stimulus types X 2 frequencies X 4 replications). No statistical or practical differences were found between pure tones or DWTs, or across frequency. It was suggested that the range of individual differences renders any group mean MCL too imprecise a measure for selecting and prescribing a hearing aid, or for determining the effect that aid may have on an individual's performance.
使用脉冲纯音序列和阻尼波序列（DWTs），以每秒2.5次的频率，在0.25和2千周/秒的频率下，为10名听力正常的年轻成年人分别测定了最舒适响度（MCL）；针对4种信号类型/频率组合中的每一种，都测定了4个MCL值。在一个采用20分贝、10分贝、最后5分贝步长的括值程序中，让受试者对每个短序列仅回答“响亮”或“轻柔”。对于所有可能的相邻测试比较，每种刺激类型/频率组合内的组平均重测差异仅为1 - 2.5分贝，即比除极限法中的降序系列之外的大多数其他MCL程序都要好。然而，在16个分布（2种刺激类型×2种频率×4次重复）中，个体受试者之间的差异为15 - 35分贝。在纯音或DWT之间，以及不同频率之间，均未发现统计学或实际差异。有人提出，个体差异范围使得任何组平均MCL对于选择和配给助听器，或确定该助听器对个体表现可能产生的影响而言，都是一种过于不精确的测量方法。
