冲击阻尼板的尺寸辨识与声线索提取

针对冲击板的物理属性辨识问题,研究了尺寸辨识的恒定声线索提取及其在听觉感知中所起的作用。设计并完成了三组主观评价实验,实验1分析了录音和合成声作为声刺激对尺寸辨识的影响。实验2和实验3分别针对铝板和木板的冲击声,通过不相似主观评价实验获得尺寸辨识的感知空间和对应力学空间维度,计算了不同声特征的信息精确度。最后,对比实验2和实验3的结果给出了尺寸辨识的恒定声线索,根据声线索与感知结果的相关性分析了听者的尺寸感知策略。结果表明,听者利用录音和合成声均获得了较好的尺寸辨识结果,且听者趋向于利用与尺寸有关的恒定声线索来完成感知任务,而忽略那些容易受其他声源属性影响的声信息。 

Size identification and acoustic cues extraction of impacted plates

In the identification of perception are investigated. Three impacted plate sizes, invariant acoustic cues and the role they play in the auditory subjective evaluation experiments are designed. In the first experiment, the effect of recording and synthetic sounds for size identification is studied. Dissimilarity evaluation experiments (the second and third experiment) are designed for aluminum and wood plates, respectively, thereafter the perception space and the mechanical space are determined. The information accuracy of sound features are then calculated, which is used as the basis of feature selection. Finally, invariant acoustic cues are given from the comparison of the last two experiments, and size perception strategies are investigated based on the correlation between features and perception results. Then we conclude that listeners do well in size identification invariant acoustic cues which have correlation with the be easily affected by other sound sources attributes whether synthetic or recording sounds are used and tend to use size information, while ignoring acoustic information which can