渲染移动声源,实现基于耳机的虚拟声现实方面的信号处理

D. Štorek
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引用次数: 3

摘要

本文重点研究了在虚拟听觉环境中实现移动虚拟声源的几个方面。利用头部相关传递函数对动态源进行渲染,通过变换滤波器的脉冲响应,实现动态源的渲染。该算法可能在其本质上由几种方法实现,其中每种方法提供的输出信号略有不同,导致空间保真度感知的差异。这种处理的主要区别在于通常采用的线性卷积和循环卷积的输出不同。通过对定位信号的主观聆听测试,对特定的变体进行了描述、讨论和比较。还讨论了作为工件发生的实现的其他方面。
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Rendering moving sound source for headphone-based virtual acoustic reality aspects of signal processing implementation
This paper focuses on aspects of implementation of moving virtual sound source in virtual auditory environment. Rendering of dynamic source based on use of Head-Related Transfer Function is achieved by application of filtering with varying impulse response of the filter. This algorithm may be in its essence implemented by several methods, where each approach provides slightly different output signal resulting in variance of perception of spatial fidelity. The main difference results from different output of linear and circular convolution usually implemeted in such processing. Particular variants are described, discussed and compared by subjective listening test of the positioned signals. Other aspects of implementation as artifact occurrence are also discussed.
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