The Ormia ochracea, a species of parasitic fly, has a remarkable localization ability despite the tiny interaural distance compared with the incoming wavelength. The mechanical coupling between its ears enhances the differences of the two received signals, the main cues to locate the source. Inspired by the coupling mechanism, we present a miniature coupled two-microphone array for estimating sound source horizontal bearing. The coupled array consists of a standard two-microphone array and a two-input, two-output filter which implements the coupling. The relationship between filter parameters and time delay magnification is investigated to provide theoretical support for array design. With appropriate parameters, the time delay of received signals can be linearly magnified. Based on the linear magnification, we present a method for estimating source direction using the coupled array. The influence of time delay magnification on time delay estimation accuracy is explored through the general cross-correlation (GCC) method. Experiments are conducted to verify the coupled array and demonstrate its advantages on improving the resolution of estimation of time delay and accuracy of bearing estimation compared with the standard array with the same element spacing.
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February 2018
Research-Article
A Biologically Inspired Coupled Microphone Array for Sound Source Bearing Estimation
Yaqiong Zhang,
Yaqiong Zhang
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
Search for other works by this author on:
Ming Yang,
Ming Yang
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: Young1@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: Young1@sjtu.edu.cn
Search for other works by this author on:
Xinlei Zhu,
Xinlei Zhu
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: xl.zhu@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: xl.zhu@sjtu.edu.cn
Search for other works by this author on:
Na Ta,
Na Ta
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
Search for other works by this author on:
Zhushi Rao
Zhushi Rao
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
Search for other works by this author on:
Yaqiong Zhang
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
Ming Yang
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: Young1@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: Young1@sjtu.edu.cn
Xinlei Zhu
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: xl.zhu@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: xl.zhu@sjtu.edu.cn
Na Ta
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
Zhushi Rao
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
and Vibration,
School of Mechanical Engineering,
Institute of Vibration, Shock and Noise,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
1Corresponding author.
Contributed by the Noise Control and Acoustics Division of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received May 16, 2017; final manuscript received August 24, 2017; published online October 4, 2017. Assoc. Editor: Ronald N. Miles.
J. Vib. Acoust. Feb 2018, 140(1): 011019 (7 pages)
Published Online: October 4, 2017
Article history
Received:
May 16, 2017
Revised:
August 24, 2017
Citation
Zhang, Y., Yang, M., Zhu, X., Ta, N., and Rao, Z. (October 4, 2017). "A Biologically Inspired Coupled Microphone Array for Sound Source Bearing Estimation." ASME. J. Vib. Acoust. February 2018; 140(1): 011019. https://doi.org/10.1115/1.4037852
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