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Analysis/Synthesis of Sounds Generated by Sustained Contact Between Rigid Objects

机译:刚性物体之间持续接触产生的声音的分析/综合

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This paper introduces an analysis/synthesis scheme for the reproduction of sounds generated by sustained contact between rigid bodies. This scheme is rooted in a Source/Filter decomposition of the sound where the filter is described as a set of poles and the source is described as a set of impulses representing the energy transfer between the interacting objects. Compared to single impacts, sustained contact interactions like rolling and sliding make the estimation of the parameters of the Source/Filter model challenging because of two issues. First, the objects are almost continuously interacting. The second is that the source is generally unknown and has therefore to be modeled in a generic way. In an attempt to tackle those issues, the proposed analysis/synthesis scheme combines advanced analysis techniques for the estimation of the filter parameters and a flexible model of the source. It allows the modeling of a wide range of sounds. Examples are presented for objects of various shapes and sizes, rolling or sliding over plates of different materials. In order to demonstrate the versatility of the approach, the system is also considered for the modeling of sounds produced by percussive musical instruments.
机译:本文介绍了一种分析/合成方案,用于再现刚体之间持续接触所产生的声音。该方案基于声音的源/滤波器分解,其中将滤波器描述为一组极点,将源描述为一组代表相互作用对象之间能量传递的脉冲。与单个冲击相比,由于两个问题,持续的接触交互(如滚动和滑动)使对Source / Filter模型的参数进行估算变得很困难。首先,对象几乎是连续交互的。第二个原因是来源通常是未知的,因此必须以通用方式建模。为了解决这些问题,提出的分析/综合方案结合了用于过滤器参数估计的先进分析技术和源的灵活模型。它允许对各种声音进行建模。提供了各种形状和大小的对象的示例,这些对象在不同材料的板上滚动或滑动。为了证明该方法的多功能性,还考虑使用该系统对打击乐器产生的声音进行建模。

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