Hartmann W M, Rakerd B
Department of Physics and Astonomy, Michigan State University, East Lansing 48824.
J Acoust Soc Am. 1989 Oct;86(4):1366-73. doi: 10.1121/1.398696.
The Franssen effect is an illusion that causes human listeners to make large errors in localizing a sound source. This paper describes steps taken to convert the illusion into an experiment in order to study the localization precedence effect as it operates in rooms. The results of the experiment suggest that there are two components to the illusion: The first is the inability of listeners to localize a sine tone in a room in the absence of an onset; the second is the obscuring of modulation cues by the irregular transient response of a room. Experiments show that the Franssen effect fails completely in an anechoic environment, as expected if the effect depends upon the implausibility of steady-state cues in a room. The Franssen effect also fails when the spectrum of the sound is dense.
弗兰森效应是一种错觉，会使人类听众在定位声源时出现较大误差。本文描述了为将这种错觉转化为一项实验所采取的步骤，以便研究在房间中起作用的定位优先效应。实验结果表明，这种错觉有两个组成部分：第一是听众在没有起始点的情况下无法在房间中定位正弦音调；第二是房间不规则的瞬态响应会掩盖调制线索。实验表明，正如预期的那样，如果这种效应取决于房间中稳态线索的不合理性，那么弗兰森效应在消声环境中会完全失效。当声音的频谱密集时，弗兰森效应也会失效。
