Optimal beamforming with aliasing cancellation in the spherical harmonics domain

作     者：JIANG Peihong CHU Zhigang LI Peiran YANG Yang JIANG Peihong;CHU Zhigang;LI Peiran;YANG Yang

作者机构：State Key Laboratory of Vehicle NVH and Safety TechnologyChongqing 401122 College of Mechanical and Vehicle EngineeringChongqing UniversityChongqing 400044 

出 版 物：《Chinese Journal of Acoustics》 (声学学报（英文版）)

年 卷 期：2023年第42卷第3期

页      面：307-321页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the Open Foundation of the State Key Laboratory of Noise,Vibration and Safety Technology of China(NVHSKL-202002) the National Natural Science Foundation of China(11704040) 

主　　题：harmonics spherical constraint 

摘      要：The existing beamforming with aliasing elimination in the spherical harmonics domain usually adopts a single design goal,making it challenging to adapt to diverse application ***,we propose optimal beamforming with aliasing cancellation in the spherical harmonics domain and establish a corresponding multiply constrained convex optimization model with a second-order cone programming *** from this model,we further propose a maximum directivity beamformer with sidelobe constraint and aliasing cancellation,a robust maximum directivity beamformer with aliasing cancellation,a minimum variance distortionless response beamformer with aliasing elimination,and a maximum directivity beamformer with null constraint and aliasing *** proposed method not only inherits the aliasing-cancellation capability of the existing aliasing cancellation beamforming,but also achieves a proper trade-off among multiple conflicting performance measures such as directivity factor,white noise gain,and sidelobe ***,the proposed optimal beamforming provides users with the flexibility to adjust the constraint parameters according to actual application requirements and thus obtain a beamformer with the best all-around performance in a specific scenario.