A miniature microphone array based on interaural time difference (ITD) is designed. This array contains four microphones with certain arrangement and aims for two-dimensional (azimuth and elevation) direction-of-arrival (DOA) estimation in the whole three-dimensional space. The array can be small because it uses a coupling algorithm that magnifies the time delay between the signals received by every two microphones. The coupling algorithm is built according to a pairwise-coupled multidimensional mechanical model inspired by the ears of the tiny parasitoid fly Ormia ochracea. It was verified that the time-delay magnification can be independent of the incident angle when the parameters in the model satisfy specific relationships. This paper further investigates the multidimensional coupled system and advocates to realize the magnification mechanism in algorithm, where the physical parameters can change according to sound frequency to ensure the time-delay magnification. Moreover, the arrangement of microphones is specially designed to help the array to achieve similar measuring accuracy for all directions in the three-dimensional space. Corresponding signal process procedures are also provided. Simulations that use such an array to estimate the azimuth and elevation angles of sound source are performed via general cross-correlation (GCC) method. Results verify the feasibility of the microphone array and show that the accuracy of the estimation increases after the signals are processed by the coupled system.
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April 2019
Research-Article
A Miniature Four-Microphone Array for Two-Dimensional Direction-of-Arrival Estimation Based on Biomimetic Time-Delay Magnification
Ling Liu,
Ling Liu
State Key Laboratory of
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: dreaming@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: dreaming@sjtu.edu.cn
Search for other works by this author on:
Ming Yang,
Ming Yang
Marine Design and Research Institute of China,
China State Shipbuilding Corporation,
Shanghai 200011, China
e-mail: young1@sjtu.edu.cn
China State Shipbuilding Corporation,
Shanghai 200011, China
e-mail: young1@sjtu.edu.cn
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Yaqiong Zhang,
Yaqiong Zhang
State Key Laboratory of
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@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,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: xl.zhu@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
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,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
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Zhushi Rao
Zhushi Rao
State Key Laboratory of
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
Search for other works by this author on:
Ling Liu
State Key Laboratory of
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: dreaming@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: dreaming@sjtu.edu.cn
Ming Yang
Marine Design and Research Institute of China,
China State Shipbuilding Corporation,
Shanghai 200011, China
e-mail: young1@sjtu.edu.cn
China State Shipbuilding Corporation,
Shanghai 200011, China
e-mail: young1@sjtu.edu.cn
Yaqiong Zhang
State Key Laboratory of
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yaoyaosjtu@sjtu.edu.cn
Xinlei Zhu
State Key Laboratory of
Mechanical System and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: xl.zhu@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
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,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wutana@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
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,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: zsrao@sjtu.edu.cn
Mechanical System and Vibration,
School of Mechanical Engineering,
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 April 6, 2018; final manuscript received November 13, 2018; published online January 16, 2019. Assoc. Editor: Miao Yu.
J. Vib. Acoust. Apr 2019, 141(2): 021017 (11 pages)
Published Online: January 16, 2019
Article history
Received:
April 6, 2018
Revised:
November 13, 2018
Citation
Liu, L., Yang, M., Zhang, Y., Zhu, X., Ta, N., and Rao, Z. (January 16, 2019). "A Miniature Four-Microphone Array for Two-Dimensional Direction-of-Arrival Estimation Based on Biomimetic Time-Delay Magnification." ASME. J. Vib. Acoust. April 2019; 141(2): 021017. https://doi.org/10.1115/1.4042124
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