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Near-field sound source localization using principal component analysis–multi-output support vector regression

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  • Lanmei Wang
  • Yao Wang
  • Guibao Wang
  • Jianke Jia

Abstract

In this article, principal component analysis method, which is applied to image compression and feature extraction, is introduced into the dimension reduction of input characteristic variable of support vector regression, and a method of joint estimation of near-field angle and range based on principal component analysis dimension reduction is proposed. Signal-to-noise ratio and calculation amount are the decisive factors affecting the performance of the algorithm. Principal component analysis is used to fuse the main characteristics of training data and discard redundant information, the signal-to-noise ratio is improved, and the calculation amount is reduced accordingly. Similarly, support vector regression is used to model the signal, and the upper triangular elements of the signal covariance matrix are usually used as input features. Since the covariance matrix has more upper triangular elements, training it as a feature input will affect the training speed to some extent. Principal component analysis is used to reduce the dimensionality of the upper triangular element of the covariance matrix of the known signal, and it is used as the input feature of the multi-output support vector regression machine to construct the near-field parameter estimation model, and the parameter estimation of unknown signal is herein obtained. Simulation results show that this method has high estimation accuracy and training speed, and has strong adaptability at low signal-to-noise ratio, and the performance is better than that of the back-propagation neural network algorithm and the two-step multiple signal classification algorithm.

Suggested Citation

  • Lanmei Wang & Yao Wang & Guibao Wang & Jianke Jia, 2020. "Near-field sound source localization using principal component analysis–multi-output support vector regression," International Journal of Distributed Sensor Networks, , vol. 16(4), pages 15501477209, April.
    • Handle: RePEc:sae:intdis:v:16:y:2020:i:4:p:1550147720916405
    DOI: 10.1177/1550147720916405
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    References listed on IDEAS

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    1. Tao Xiong & Yukun Bao & Zhongyi Hu, 2014. "Multiple-output support vector regression with a firefly algorithm for interval-valued stock price index forecasting," Papers 1401.1916, arXiv.org.
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