Green D M, Mason C R, Kidd G
J Acoust Soc Am. 1984 Apr;75(4):1163-7. doi: 10.1121/1.390765.
The detection of an increment in the intensity of the central component of a multi-component complex was measured as a function of the frequency spacing of the components and the duration of the presentation. The overall intensity of the complex was randomly varied on each presentation of the stimulus. Curiously, the increment becomes easier to hear as the range and density of the surrounding complex is increased. This increase in range and density is also effective in improving the detectability of the increment when there is no random variation in intensity, i.e., a conventional Weber fraction experiment. This is unlike the results obtained in many other critical-band experiments where energy remote from the signal frequency has little or no effect. Measurement of the effects of signal duration showed that when presentations were shorter than about 100 msec a greater increment in intensity was required than for longer durations. These results with duration are similar to those obtained in other intensity-discrimination tasks.
多成分复合体中心成分强度增加的检测是作为成分频率间距和呈现持续时间的函数进行测量的。在每次呈现刺激时，复合体的整体强度是随机变化的。奇怪的是，随着周围复合体范围和密度的增加，增量变得更容易被听到。当强度没有随机变化时，即传统的韦伯分数实验中，范围和密度的这种增加对于提高增量的可检测性也是有效的。这与许多其他临界带宽实验的结果不同，在那些实验中，远离信号频率的能量几乎没有影响。信号持续时间影响的测量表明，当呈现时间短于约100毫秒时，与较长持续时间相比，需要更大的强度增量。这些关于持续时间的结果与在其他强度辨别任务中获得的结果相似。
