Skip to main content
SpringerLink
Log in

Near-field source localization method and application using the time reversal mirror technique

  • Published:
Journal of Electronics (China)

Abstract

In order to develop the acoustic keyboard for Personal Computer (PC), it is necessary to seek high-precision near-field source localization algorithm for identifying the keyboard characters. First of all, the focusing property of Time Reversal Mirror (TRM) is introduced, and then a mathematical model of microphone array receiving typing sound is established according to the realization of acoustic keyboard from which the TRM localization algorithm is carried out. The results through computer simulation show that the localization Root Mean Square Error (RMSE) performance of the algorithm can reach 10−3, which demonstrates that the algorithm possesses a high accuracy for the actual near-field acoustic source localization, with potential of developing the computer acoustic keyboard. Furthermore, for the purpose of testing its effect on actual near-field source localization, we organize three experiments for acoustic keyboard characters localization. The experiment results show that the positioning error of TRM algorithm is less than 1 cm within a provided acoustic keyboard region. This will provide theoretical guidance for the further research of computer acoustic keyboard.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Yuanwei Jin and José M. F. Moura. Time-reversal detection using antenna arrays. IEEE Transactions on Signal Processing, 57(2009)4, 1396–1414.

    Article  MathSciNet  Google Scholar 

  2. J. M. F. Moura and Y. Jin. Time reversal imaging by adaptive interference canceling. IEEE Transactions on Signal Processing, 56(2008)1, 233–247.

    Article  MathSciNet  Google Scholar 

  3. M. Heinemann, A. Larraza, and K. B. Smith. Experimental studies of applications of time-reversal acoustics to noncoherent under water communications. Journal of Acoustic Society of America, 113(2003)6, 3111–3116.

    Article  Google Scholar 

  4. M. Fink, J. De Rosny, G. Lerosey, et al. Time-reversed waves and super-resolution. Comptes Rendus Physique, 10(2009)5, 447–463.

    Article  Google Scholar 

  5. Jean-Pierre Fouque, Josselin Garnier, André Nachbin, et al. Time-reversal refocusing for point source in randomly layered media. Wave Motion, 42(2005)3, 238–260.

    Article  MathSciNet  MATH  Google Scholar 

  6. J. M. Parot. Localizing impulse sources in an open space by time reversal with very few transducers. Applied Acoustics, 69(2008)4, 311–324.

    Article  Google Scholar 

  7. G. F. Edelmann, H. C. Song, et al. Underwater acoustic communications using time reversal. IEEE Journal of Oceanic Engineering, 30(2005)4, 852–864.

    Article  Google Scholar 

  8. N. Dominguez, V. Gibiat, and Y. Esquerr. Time domain topological gradient and time reversal analogy: an inverse method for ultrasonic target detection. Wave Motion, 42(2005)1, 31–52.

    Article  MathSciNet  MATH  Google Scholar 

  9. Guillemette Ribay, Julien de Rosny, and Mathias Fink. Time reversal of noise sources in a reverberation room. Journal of Acoustic Society of America, 117 (2005)5, 2866–2872.

    Article  Google Scholar 

  10. Zheng Li. The Implement Prnciple Research of the Acoustic Keyboard. [Master Dissertation]. Harbin Engineering University, 2008 (in Chinese). 郑莉. 计算机声学键盘实现原理研究. [硕士论文]. 哈 尔滨工程大学, 2008年.

Download references

Author information

Authors and Affiliations

  1. Department of Information and Communication Engineering, Harbin Engineering University, Harbin, 150001, China

    Yongqing Fu, Yulei Jiang & Zhanya Liu

  2. Harbin Engineering University, Harbin, 150001, China

    Yongqing Fu

Authors
  1. Yongqing Fu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yulei Jiang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Zhanya Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yongqing Fu.

Additional information

Communication author: Fu Yongqing, born in 1956, male, Master Degree, Professor, Ph.D. Candidate Supervisor.

About this article

Cite this article

Fu, Y., Jiang, Y. & Liu, Z. Near-field source localization method and application using the time reversal mirror technique. J. Electron.(China) 28, 531–538 (2011). https://doi.org/10.1007/s11767-012-0543-2

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11767-012-0543-2

Key words

CLC index

Search

Navigation