Material identification of real impact sounds: Effects of size variation in steel, glass, wood, and plexiglass plates
Material identification of real impact sounds: Effects of size variation in steel, glass, wood, and plexiglass plates
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DOI：
10.1121/1.2149839
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发表时间：
2006-02-01
影响因子：
2.4
通讯作者：
McAdams, S
中科院分区：
文献类型：
--
作者：
Giordano, BL;McAdams, S
研究了不同尺寸被撞击物体的材料识别问题。以前关于这个问题的研究假设识别是基于声学上的减震措施。对这一假设进行了检验，比较了衰减措施与其他几个声学描述符在解释识别数据方面的能力。听众的表现在总体材料类别(钢-玻璃和木材-有机玻璃)方面完美无瑕，这些材料包含了机械性能差异很大的材料。观察到同一毛类材料的性能受损，仅根据对象的大小进行识别。阻尼描述符说明了总类别的识别。然而，其他描述符，如信号持续时间，也同样很好地解释了结果。同一总类别的材料主要是根据信号频率确定的。总体而言，对阻尼与物质知觉的相关性的支持较差。分析了理想材料识别的声学支撑。为完美的表演找到了足够的声学信息。因此，关于规模效应起源的程序性偏见可以被摒弃，指向它们的认知性质，而不是方法论性质。根据日常声环境的规律性来解释识别性能。(C)2006年美国声学学会。
Identification of the material of struck objects of variable size was investigated. Previous studies on this issue assumed recognition to be based on acoustical measures of damping. This assumption was tested, comparing the power of a damping measure in explaining identification data with that of several other acoustical descriptors. Listeners' performance was perfect with respect to gross material categories (steel-glass and wood-plexiglass) comprising materials of vastly different mechanical properties. Impaired performance was observed for materials within the same gross category, identification being based on the size of the objects alone. The damping descriptor accounted for the identification of the gross categories. However other descriptors such as signal duration explained the results equally well. Materials within the same gross category were identified mainly on the basis of signal frequency. Overall poor support for the relevance of damping to material perception was found. An analysis of the acoustical support for perfect material identification was carried out. Sufficient acoustical information for perfect performance was found. Thus, procedural biases for the origin of the effects of size could be discarded, pointing toward their cognitive, rather than methodological nature. Identification performance was explained in terms of the regularities of the everyday acoustical environment. (c) 2006 Acoustical Society of America.