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arXiv 2202.04807eess.AScs.SD
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基于主、次声场独立核插值的空间有源噪声控制

Spatial active noise control based on individual kernel interpolation of primary and secondary sound fields

The University of Tokyo(东京大学)

Kazuyuki Arikawa, Shoichi Koyama, Hiroshi Saruwatari

摘要:

提出了一种基于主、次声场独立核插值的空间有源噪声控制方法。空间ANC旨在通过使用多个次级源和麦克风来消除连续区域内不需要的主要噪声。一种基于声场核插值的方法,使得利用灵活的阵列几何结构来衰减目标区域上的噪声成为可能。此外,通过使用方向加权的核函数,可以考虑关于主要噪声源方向的先验信息。然而,而要插值的声场是一个叠加的主要和次要的声场,主要噪声源的方向权重应用于总的声场在以前的工作,因此,性能的改善是有限的。我们提出了一种方法,分别插值的主要和次要的声场,并制定了基于这种插值方法的归一化最小均方算法。实验结果表明,该方法优于基于全核插值的方法。

英文摘要:

A spatial active noise control (ANC) method based on the individual kernel interpolation of primary and secondary sound fields is proposed. Spatial ANC is aimed at cancelling unwanted primary noise within a continuous region by using multiple secondary sources and microphones. A method based on the kernel interpolation of a sound field makes it possible to attenuate noise over the target region with flexible array geometry. Furthermore, by using the kernel function with directional weighting, prior information on primary noise source directions can be taken into consideration. However, whereas the sound field to be interpolated is a superposition of primary and secondary sound fields, the directional weight for the primary noise source was applied to the total sound field in previous work; therefore, the performance improvement was limited. We propose a method of individually interpolating the primary and secondary sound fields and formulate a normalized least-mean-square algorithm based on this interpolation method. Experimental results indicate that the proposed method outperforms the method based on total kernel interpolation.

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