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Nonlinear Analysis of Built-in Sensor in Smart Device under the Condition of Voice Actuating

Author

Listed:
  • Ning Zhao

    (School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China)

  • Yuhe Liu

    (School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China)

  • Junjie Shen

    (School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China)

Abstract

A built-in sensor in a smart device, such as the accelerometer and the gyroscope, will produce an obvious nonlinear output when it receives voice signal. In this paper, based on the chaotic theory, the nonlinearity of smartphone built-in accelerometer is revealed by phase space reconstructing after we calculate several nonlinearity characteristics, such as best delay time, embedding dimension, and the attractor of accelerometer system, under the condition of voice commands inputting. The results of theoretical calculation and experiments show that this specific nonlinearity could lay a foundation for further signal extraction and analysis.

Suggested Citation

  • Ning Zhao & Yuhe Liu & Junjie Shen, 2019. "Nonlinear Analysis of Built-in Sensor in Smart Device under the Condition of Voice Actuating," Future Internet, MDPI, vol. 11(3), pages 1-13, March.
    • Handle: RePEc:gam:jftint:v:11:y:2019:i:3:p:81-:d:217241
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    References listed on IDEAS

    as
    1. Jian Gu & Shuyan Chen, 2014. "Nonlinear Analysis on Traffic Flow Based on Catastrophe and Chaos Theory," Discrete Dynamics in Nature and Society, Hindawi, vol. 2014, pages 1-11, November.
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