3D reconstruction of HRTF-fields from 1D continuous measurements
3D reconstruction of HRTF-fields from 1D continuous measurements
复制标题
根据 1D 连续测量对 HRTF 场进行 3D 重建
DOI：
10.1109/aspaa.2011.6082278
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Michael W. Weinert
中科院分区：
文献类型：
--
作者：
Gerald Enzner;Martin Krawczyk;Falk;Michael W. Weinert
头部相关传递函数（HRTF）描述了人类头部和外耳的方向和距离相关的接收器特性。它们是双耳声音技术的核心工具，因此需要进一步关注它们在所有维度上的快速和准确采集。在本文中，我们利用最近提出的技术，准连续的头相关脉冲响应（HRIR）的听觉球的方位圆测量。然后，我们应用傅立叶声学，以实现所获得的HRIR数据的距离外推。这里，与听觉球的离散表示相比，使用几乎连续的数据的优点是双重的。一方面，我们可以减少或理想地避免与HRTF/HRIR插值相关的空间混叠的影响，而另一方面，能够在几乎闭合的轮廓上直接且鲁棒地计算傅立叶积分。基于圆柱坐标系，我们首先开发的框架2.5D重建的HRTF字段的偏见，而在球坐标系中，我们最终证明了无偏的三维重建的HRTF字段的1D连续数据。
Head-related transfer functions (HRTFs) describe direction and distance dependent receiver characteristics of the human head and the outer ear. They are a central tool in binaural sound technology and their fast and accurate acquisition in all dimensions therefore requires further attention. In this paper, we make use of a recently proposed technique for quasi-continuous head-related impulse response (HRIR) measurements on the azimuth circle of the auditory sphere. We then apply Fourier acoustics to achieve range extrapolation of the obtained HRIR data. Here, the advantage of using almost continuous data in contrast to a discrete representation of the auditory sphere is twofold. On the one hand, we can reduce or ideally avoid the effect of spatial aliasing related to HRTF/HRIR interpolation, while on the other hand, direct and robust calculation of Fourier integrals on an almost closed contour is enabled. Based on cylindrical coordinates, we first develop the framework for 2.5D reconstruction of HRTF-fields with bias, whereas in spherical coordinates we eventually demonstrate unbiased 3D reconstruction of HRTF-fields from the 1D continuous data.