Upscaling Ambisonic sound scenes using compressed sensing techniques
Upscaling Ambisonic sound scenes using compressed sensing techniques
复制标题
使用压缩传感技术升级 Ambisonic 声音场景
DOI：
10.1109/aspaa.2011.6082301
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
C. Jin
中科院分区：
文献类型：
--
作者：
Andrew Wabnitz;N. Epain;A. McEwan;C. Jin
本文考虑将压缩感知应用于球面声学，以改善空间声场重建。更具体地说，我们将压缩传感技术应用于一组高保真立体声声音信号，以获得原始声场的超分辨率平面波分解。也就是说，我们研究使用平面波分解来增加Ambisonic声音场景的球谐阶数。我们将此称为放大Ambisonic声音场景。本文的一个重点是使用子带分析，使平面波分解更强大。结果表明，子带分析确实提高了平面波分解的鲁棒性时，占主导地位的重叠源存在或在嘈杂或扩散的声音条件。放大Ambisonic声音场景允许更多的扬声器用于空间声场重建，从而产生更大的甜蜜点和改善的声音质量。
This paper considers the application of compressed sensing to spherical acoustics in order to improve spatial sound field reconstruction. More specifically, we apply compressed sensing techniques to a set of Ambisonic sound signals to obtain a super-resolution plane-wave decomposition of the original sound field. That is to say, we investigate using the plane-wave decomposition to increase the spherical harmonic order of the Ambisonic sound scene. We refer to this as upscaling the Ambisonic sound scene. A focus of the paper is using sub-band analysis to make the plane-wave decomposition more robust. Results show that the sub-band analysis does indeed improve the robustness of the plane-wave decomposition when dominant overlapping sources are present or in noisy or diffuse sound conditions. Upscaling Ambisonic sound scenes allows more loudspeakers to be used for spatial sound field reconstruction, resulting in a larger sweet spot and improved sound quality.