research-article

Steering Study of Linear Differential Microphone Arrays

Authors:

Gongping Huang,

Israel CohenAuthors Info & Claims

IEEE/ACM Transactions on Audio, Speech, and Language Processing, Volume 29

Pages 158 - 170

https://doi.org/10.1109/TASLP.2020.3038566

Published: 17 November 2020 Publication History

Abstract

Differential microphone arrays (DMAs) can achieve high directivity and frequency-invariant spatial response with small apertures; they also have a great potential to be used in a wide spectrum of applications for high-fidelity sound acquisition. Although many efforts have been made to address the design of linear DMAs (LDMAs), most developed methods so far only work for the situation where the source of interest is incident from the endfire direction. This paper studies the steering problem of differential beamformers with linear microphone arrays. We present new insights into beam steering of LDMAs and propose a series of steerable differential beamformers. The major contributions of this paper are as follows. 1) A series of ideal functions are defined to describe the ideal, target beampatterns of LDMAs. 2) We prove that first-order differential beamformers with linear microphone arrays are not steerable and their mainlobes can only be at the endfire directions. 3) We deduce the fundamental conditions for designing steerable differential beamformers with LDMAs. 4) We develop a method to design steerable beamformers with LDMAs using null constraints. Simulations and experiments validate the properties of the developed method.

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Cited By

Itzhak GCohen I(2023)Differential constant-beamwidth beamforming with cube arraysSpeech Communication10.1016/j.specom.2023.03.006149:C(98-107)Online publication date: 1-Apr-2023
https://dl.acm.org/doi/10.1016/j.specom.2023.03.006
Yu G(2023)Eigenbeam-space transformation based steerable differential beamforming for linear arraysSignal Processing10.1016/j.sigpro.2023.109171212:COnline publication date: 20-Sep-2023
https://dl.acm.org/doi/10.1016/j.sigpro.2023.109171
Zhang JGong PWu YLi LYu L(2023)Frequency-invariant beamformer design via ADPM approachSignal Processing10.1016/j.sigpro.2022.108814204:COnline publication date: 1-Mar-2023
https://dl.acm.org/doi/10.1016/j.sigpro.2022.108814

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Steering Study of Linear Differential Microphone Arrays
1. Applied computing
2. Information systems
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cover image IEEE/ACM Transactions on Audio, Speech and Language Processing

IEEE/ACM Transactions on Audio, Speech and Language Processing Volume 29, Issue

2021

3717 pages

ISSN:2329-9290

EISSN:2329-9304

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2329-9290 © 2020 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See https://www.ieee.org/publications/rights/index.html for more information.

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Published: 17 November 2020

Published in TASLP Volume 29

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Cited By

Itzhak GCohen I(2023)Differential constant-beamwidth beamforming with cube arraysSpeech Communication10.1016/j.specom.2023.03.006149:C(98-107)Online publication date: 1-Apr-2023
https://dl.acm.org/doi/10.1016/j.specom.2023.03.006
Yu G(2023)Eigenbeam-space transformation based steerable differential beamforming for linear arraysSignal Processing10.1016/j.sigpro.2023.109171212:COnline publication date: 20-Sep-2023
https://dl.acm.org/doi/10.1016/j.sigpro.2023.109171
Zhang JGong PWu YLi LYu L(2023)Frequency-invariant beamformer design via ADPM approachSignal Processing10.1016/j.sigpro.2022.108814204:COnline publication date: 1-Mar-2023
https://dl.acm.org/doi/10.1016/j.sigpro.2022.108814

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