Perceptual constancy of a global spectral property: spectral slope discrimination.
Perceptual constancy of a global spectral property: spectral slope discrimination.
复制标题
全局光谱特性的感知恒定性：光谱斜率辨别。
DOI：
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发表时间：
1995
影响因子：
2.4
通讯作者：
R. Pastore
中科院分区：
文献类型：
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作者：
X. Li;R. Pastore
当前的研究调查了当基频 (F0) 和频谱形状在一次试验中的三个复杂刺激中变化时，频谱斜率辨别的感知恒定性。这三个刺激变量是复杂声音的全局或突现属性。刺激变量的选择符合这样的观念：感知可以根据复杂声音产生的源过滤模型来组织； F0 和频谱斜率表示声源的属性，频谱形状通常表示滤波器属性。根据源滤波器模型，刺激属性之间的相互作用应取决于属性的典型来源是否与源光谱或滤波器传递函数相同。当前研究中的四个实验表明，当 F0（第二个源属性）变化时，光谱斜率辨别的性能显着下降。然而，当光谱形状（滤波器特性）变化时，光谱斜率辨别力的改变很小。该研究支持这样的说法：听众将源属性视为一个单元，在感知上，该单元相对独立于过滤器属性。
The current study investigated perceptual constancy for spectral slope discrimination when fundamental frequency (F0) and spectral shape were varied across three complex stimuli within a single trial. The three stimulus variables were global or emergent properties of a complex sound. The selection of the stimulus variables was in keeping with notions that perception may be organized in terms of a source-filter model of complex sound production; F0 and spectral slope represent properties of sound sources and spectral shape typically represents a filter property. According to the source-filter model, interaction between stimulus properties should depend upon whether the typical origin of the property was common to the source spectrum or the filter transfer function. The four experiments in the current study demonstrated a significant performance decrement in spectral slope discrimination when F0 (a second source property) varied. However, spectral slope discrimination was minimally altered when spectral shape (a filter property) was varied. The study supported claims that listeners treat source properties as a unit which, in perception, is relatively independent of filter properties.