Symmetric interactions and interference between pitch and timbre
Symmetric interactions and interference between pitch and timbre
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DOI：
10.1121/1.4863269
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发表时间：
2014-03-01
影响因子：
2.4
通讯作者：
Oxenham, Andrew J.
中科院分区：
文献类型：
--
作者：
Allen, Emily J.;Oxenham, Andrew J.
谐波音调复合体的频谱形状的变化被感知为音色变化，并且可以导致较差的基频（F0）或音高辨别。关于F0变化对光谱形状辨别的影响知之甚少。该研究的目的是确定音高和音色之间的相互作用是否对称，并测试音乐训练是否影响听众忽略不相关感知维度变化的能力。在光谱质心存在和不存在随机、并发变化的情况下测量F0的差异阈值（DL），反之亦然。此外，根据单个DL，测量灵敏度，因为目标参数和干扰参数变化相同。结果表明，音高（F0）和音色（频谱质心）尺寸之间的显着和类似的干扰，向上的频谱运动往往混淆向上F0运动，反之亦然。平均而言，音乐家比非音乐家有更好的F0DL，但光谱质心DL相似。两组在两个维度的敏感性降低方面显示出相似的干扰效应。结果显示，对称的音高和音色之间的干扰效果，一旦尺寸和主题之间的敏感性差异得到控制。音乐训练并不能可靠地帮助克服这些影响。(C)2014年美国声学学会。
Variations in the spectral shape of harmonic tone complexes are perceived as timbre changes and can lead to poorer fundamental frequency (F0) or pitch discrimination. Less is known about the effects of F0 variations on spectral shape discrimination. The aims of the study were to determine whether the interactions between pitch and timbre are symmetric, and to test whether musical training affects listeners' ability to ignore variations in irrelevant perceptual dimensions. Difference limens (DLs) for F0 were measured with and without random, concurrent, variations in spectral centroid, and vice versa. Additionally, sensitivity was measured as the target parameter and the interfering parameter varied by the same amount, in terms of individual DLs. Results showed significant and similar interference between pitch (F0) and timbre (spectral centroid) dimensions, with upward spectral motion often confused for upward F0 motion, and vice versa. Musicians had better F0DLs than non-musicians on average, but similar spectral centroid DLs. Both groups showed similar interference effects, in terms of decreased sensitivity, in both dimensions. Results reveal symmetry in the interference effects between pitch and timbre, once differences in sensitivity between dimensions and subjects are controlled. Musical training does not reliably help to overcome these effects. (C) 2014 Acoustical Society of America.