On the Design of Planar Differential Microphone Arrays with Specified Beamwidth or Sidelobe Level

Luo, Xueqin; Jin, Jilu; Huang, Gongping; Zhao, Yingke; Chen, Jingdong; Benesty, Jacob

doi:10.1109/icassp48485.2024.10446803

ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2024

DOI: 10.1109/icassp48485.2024.10446803

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On the Design of Planar Differential Microphone Arrays with Specified Beamwidth or Sidelobe Level

Xueqin Luo,

Jilu Jin,

Gongping Huang

et al.

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2024

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Cited by 2 publications

References 33 publications

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Robust Near-field Circular Beamformer with Artificial Intelligence Based Side-lobe Reduction Technique

Tota,

Hossain,

Sultan

et al. 2024

Circuits Syst Signal Process

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Robust Near-field Circular Beamformer with Artificial Intelligence Based Side-lobe Reduction Technique

Tota,

Hossain,

Sultan

et al. 2024

Circuits Syst Signal Process

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Design of Robust Broadband Frequency-Invariant Broadside Beampatterns for the Differential Loudspeaker Array

Zhang,

Wei,

Zhu

2024

Applied Sciences

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The directional loudspeaker array has various applications due to its capability to direct sound generation towards the target listener and reduce noise pollution. Differential beamforming has recently been applied to the loudspeaker line array to produce a broadside frequency-invariant radiation pattern. However, the existing methods cannot achieve a compromise between robustness and broadband frequency-invariant beampattern preservation. This paper proposed a robust broadband differential beamforming design to allow the loudspeaker line array to radiate broadside frequency-invariant radiation patterns with robustness. Specifically, we propose a method to determine the ideal broadside differential beampattern by combining multiple criteria, namely null positions, maximizing the directivity factor, and achieving a desired beampattern with equal sidelobes. We derive the above ideal broadside differential beampattern into the target beampattern in the modal domain. We propose a robust modal matching method with Tikhonov regularization to optimize the loudspeaker weights in the modal domain. Simulations and experiments show improved frequency-invariant broadside beamforming over the 250–4k Hz frequency range compared with the existing modal matching and null-constrained methods.

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On the Design of Planar Differential Microphone Arrays with Specified Beamwidth or Sidelobe Level

Cited by 2 publications

References 33 publications

Robust Near-field Circular Beamformer with Artificial Intelligence Based Side-lobe Reduction Technique

Robust Near-field Circular Beamformer with Artificial Intelligence Based Side-lobe Reduction Technique

Design of Robust Broadband Frequency-Invariant Broadside Beampatterns for the Differential Loudspeaker Array

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