Bacon S P, Viemeister N F
J Acoust Soc Am. 1985 Oct;78(4):1231-5. doi: 10.1121/1.392891.
Threshold for a 20-ms, 1-kHz signal was measured as a function of its temporal position within a longer duration gated masker; masker frequencies were below, at, and above 1 kHz. For a masker frequency above the signal frequency, there is a sizable temporal effect: As the onset of the signal is delayed, threshold decreases rapidly but then increases again as the signal approaches masker offset. Similar results can be observed for a masker frequency below the signal frequency, but that temporal effect is due to the detection of the cubic difference tone. The implication of this frequency-dependent temporal effect for measuring psychophysical tuning curves is discussed.
测量了20毫秒、1千赫兹信号的阈值，该阈值是其在持续时间更长的带门掩蔽音中时间位置的函数；掩蔽音频率低于、等于和高于1千赫兹。对于高于信号频率的掩蔽音频率，存在相当大的时间效应：随着信号起始延迟，阈值迅速下降，但随着信号接近掩蔽音结束又再次上升。对于低于信号频率的掩蔽音频率也能观察到类似结果，但该时间效应是由于三次差音的检测。讨论了这种频率相关的时间效应对测量心理物理调谐曲线的影响。
