Design and Analysis of First-Order Steerable Nonorthogonal Differential Microphone Arrays
Summary :
Differential microphone arrays have been widely used in hands-free communication systems because of their frequency-invariant beampatterns, high directivity factors and small apertures. Considering the position of acoustic source always moving within a certain range in real application, this letter proposes an approach to construct the steerable first-order differential beampattern by using four omnidirectional microphones arranged in a non-orthogonal circular geometry. The theoretical analysis and simulation results show beampattern constructed via this method achieves the same direction factor (DF) as traditional DMAs and higher white noise gain (WNG) within a certain angular range. The simulation results also show the proposed method applies to processing speech signal. In experiments, we show the effectiveness and small computation amount of the proposed method.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E101-A No.10 pp.1687-1692
- Publication Date
- 2018/10/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.E101.A.1687
- Type of Manuscript
- LETTER
- Category
- Engineering Acoustics
Authors
Qiang YU
Nanjing Tech University
Xiaoguang WU
Nanjing Tech University
Yaping BAO
Nanjing Tech University
Keyword
Latest Issue
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Qiang YU, Xiaoguang WU, Yaping BAO, "Design and Analysis of First-Order Steerable Nonorthogonal Differential Microphone Arrays" in IEICE TRANSACTIONS on Fundamentals,
vol. E101-A, no. 10, pp. 1687-1692, October 2018, doi: 10.1587/transfun.E101.A.1687.
Abstract: Differential microphone arrays have been widely used in hands-free communication systems because of their frequency-invariant beampatterns, high directivity factors and small apertures. Considering the position of acoustic source always moving within a certain range in real application, this letter proposes an approach to construct the steerable first-order differential beampattern by using four omnidirectional microphones arranged in a non-orthogonal circular geometry. The theoretical analysis and simulation results show beampattern constructed via this method achieves the same direction factor (DF) as traditional DMAs and higher white noise gain (WNG) within a certain angular range. The simulation results also show the proposed method applies to processing speech signal. In experiments, we show the effectiveness and small computation amount of the proposed method.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E101.A.1687/_p
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@ARTICLE{e101-a_10_1687,
author={Qiang YU, Xiaoguang WU, Yaping BAO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Design and Analysis of First-Order Steerable Nonorthogonal Differential Microphone Arrays},
year={2018},
volume={E101-A},
number={10},
pages={1687-1692},
abstract={Differential microphone arrays have been widely used in hands-free communication systems because of their frequency-invariant beampatterns, high directivity factors and small apertures. Considering the position of acoustic source always moving within a certain range in real application, this letter proposes an approach to construct the steerable first-order differential beampattern by using four omnidirectional microphones arranged in a non-orthogonal circular geometry. The theoretical analysis and simulation results show beampattern constructed via this method achieves the same direction factor (DF) as traditional DMAs and higher white noise gain (WNG) within a certain angular range. The simulation results also show the proposed method applies to processing speech signal. In experiments, we show the effectiveness and small computation amount of the proposed method.},
keywords={},
doi={10.1587/transfun.E101.A.1687},
ISSN={1745-1337},
month={October},}
Copy
TY - JOUR
TI - Design and Analysis of First-Order Steerable Nonorthogonal Differential Microphone Arrays
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1687
EP - 1692
AU - Qiang YU
AU - Xiaoguang WU
AU - Yaping BAO
PY - 2018
DO - 10.1587/transfun.E101.A.1687
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E101-A
IS - 10
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - October 2018
AB - Differential microphone arrays have been widely used in hands-free communication systems because of their frequency-invariant beampatterns, high directivity factors and small apertures. Considering the position of acoustic source always moving within a certain range in real application, this letter proposes an approach to construct the steerable first-order differential beampattern by using four omnidirectional microphones arranged in a non-orthogonal circular geometry. The theoretical analysis and simulation results show beampattern constructed via this method achieves the same direction factor (DF) as traditional DMAs and higher white noise gain (WNG) within a certain angular range. The simulation results also show the proposed method applies to processing speech signal. In experiments, we show the effectiveness and small computation amount of the proposed method.
ER -
English
