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Microphone Array for Hands-Free Voice Communication in a Car

  • Stephen Oh
  • Vishu Viswanathan
Part of the The Springer International Series in Engineering and Computer Science book series (SECS, volume 327)

Abstract

We present the results of our research on developing a speech acquisition and enhancement system so that a speech recognizer can reliably be used inside a noisy automobile environment, for the digital cellular telephone application. Our research results have demonstrated that a beamforming method with a microphone array is a reliable approach for hands-free voice dialing application in the car noise environment. Two beamforming algorithms were investigated in our research: delay-and-sum beam-former and generalized sidelobe canceler. Performance evaluation results of these two algorithms are presented for speech database collected in real cars under different noise conditions. Signal-to-noise ratio and speech recognition error rate were used as performance measures in these evaluations.

Keywords

Speech Recognition Speech Data Speech Enhancement Speech Recognition System Microphone Array 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    J. B. Allen, D. A. Berkley, and J. Blauert, “Multimicrophone signal-processing technique to remove room reverberation from speech signals,”J. Acoust. Soc. Amer.vol.62, pp. 912–915, Oct. 1977.CrossRefGoogle Scholar
  2. [2]
    V. M. Alvarado and H. F. Silverman, “Experimental results showing the effects of optimal spacing between elements of a linear microphone array,” inProc. IEEE Int. Conf. Acoust. Speech Signal Processingpp. 837–840, Apr. 1990.Google Scholar
  3. [3]
    S. Boll, “Suppression of acoustic noise in speech using spectral subtraction,”IEEE Trans. Acoust. Speech Signal Processingvol. ASSP-27, pp. 113–117, Apr. 1979.CrossRefGoogle Scholar
  4. [4]
    K. M. Buckley, “Spatial/spectral filtering with linearly constrained adaptive arrays,”IEEE Trans. Acoust., Speech, Sig. Processingvol. ASSP-35, pp. 249–266, Dec. 1987.CrossRefGoogle Scholar
  5. [5]
    I. Claesson, S. E. Nordholm, B. A. Bengtsson, and P. Eriksson, “A multiDSP implementation of a broad-band adaptive beamformer for use in a hands-free mobile radio telephone,”IEEE Trans. Vehicul. Technol.vol. 40, pp. 194–202, Feb. 1991.CrossRefGoogle Scholar
  6. [6]
    H. Cox, R. M. Zeskind, and M. M. Owen, “Robust adaptive beamforming,”IEEE Trans. Acoust., Speech, Signal Processingvol. ASSP-35, pp.1365–1375, Oct. 1987.CrossRefGoogle Scholar
  7. [7]
    G. Doddington, “Phonetically sensitive discriminants for improved speech recognition,” inProc. IEEE hit. Conf. Acoust. Speech Signal Processingpp. 556–559, May 1989.Google Scholar
  8. [8]
    M. H. Er and A. Cantoni, “ A unified approach to the design of robust narrow-band antenna array processors,”IEEE Trans. Antenn. Propagat.vol. AP-38, pp. 17–23, Jan. 1990.CrossRefGoogle Scholar
  9. [9]
    K. Farrell, R. J. Mammone, and J. L. Flanagan, “Beamforming microphone arrays for speech enhancement,” inProc. IEEE Int. Conf. Acoust. Speech Signal Processingpp. 285–288. Mar. 1992.Google Scholar
  10. [10]
    J. L. Flanagan, J. D. Johnston, R. Zahn, and G. Elko, “Computer-steered microphone arrays for sound transduction in large rooms,”J. Acoust. Soc. Amer.vol. 78, pp. 1508–1518, Nov. 1985.CrossRefGoogle Scholar
  11. [11]
    O. L. Frost, “An algorithm for linearly constrained adaptive array processing,” inProc. IEEEvol. 60, pp. 926–935, Aug. 1972.CrossRefGoogle Scholar
  12. [12]
    G. Fudge and D. Linebargar, “A calibrated generalized sidelobe canceller for wideband beamforming,”IEEE Trans. Signal Processingvol. 42, pp. 2871–2875, Oct. 1994.CrossRefGoogle Scholar
  13. [13]
    S. Gazor, S. Affes, and Y. Grenier, “Robust adaptive beamforming via target tracking,”Ecole Nationale Supérieure des TélécommunicationsParis, France, Submitted to IEEE Trans. Signal Processing, Dec. 1993.Google Scholar
  14. [14]
    M. Goulding and J. S. Bird, “Speech enhancement for mobile telephony,”IEEE Trans. Vehicul. Technol.vol. 39, pp. 316–326, Nov. 1990.CrossRefGoogle Scholar
  15. [15]
    Y. Grenier, “A microphone array for car environments,” inProc. IEEE Int. Conf. Acoust. Speech Signal Processingpp. 305–308. Mar. 1992.Google Scholar
  16. [16]
    L. J. Griffiths and C. W. Jim, “An alternative approach to linearly constrained adaptive beamforming,”IEEE Trans. Antenn. Propagat.vol. AP-30, pp. 27–30, Jan. 1982.CrossRefGoogle Scholar
  17. [17]
    S. HaykinArray Signal ProcessingEnglewood Cliffs, NJ: Prentice-Hall, 1985.MATHGoogle Scholar
  18. [18]
    N. K. Jablon, “Adaptive beamforming with the generalized sidelobe canceller in the presense of array imperfections,”IEEE Trans. Antenn. Propagat.vol. AP-34, pp. 996–1012, Aug. 1986.CrossRefGoogle Scholar
  19. [19]
    W. Kellermann, “A self-steering digital microphone array,” inProc. IEEE Int. Conf. Acoust. Speech Signal Proccessingpp. 3581–3584, May 1991.Google Scholar
  20. [20]
    S. Oh, V. Viswanathan, and P. Papamichalis, “Hands-free voice communication in an automobile with a microphone array,” inProc. IEEE Int. Conf. Acoust. Speech Signal Processingpp. 281–284. Mar. 1992.Google Scholar
  21. [21]
    B.I.Pawate, and G. Doddington, “Implementation of a hidden Markov model-based layered grammar recognizer,” inProc. IEEE Int. Conf. Acoust. Speech Signal Processingpp. 801–804, 1989.Google Scholar
  22. [22]
    J. Picone, “Continuous speech recognition using hidden Markov models,”IEEE Acoust. Speech Signal Processing Magazinepp. 26–41, Jul. 1990.Google Scholar
  23. [23]
    J. W. Pierre and M. Kaveh, “Wideband sensor array processing using a laboratory array testbed,” inProc. 35th Midwest Symp. on Circuits Syst.Aug. 1992.Google Scholar
  24. [24]
    R. Pridham and R. A. Mucci, “A novel approach to digital beamforming,”J. Acoust. Soc. Amer.vol. 63, pp. 425–434, Feb. 1978.CrossRefGoogle Scholar
  25. [25]
    R. O. Schmidt, “Multiple emitter location and signal parameters estimation,”IEEE Trans. Antenn, Propagat.vol. AP-34, pp. 276–280, Mar. 1986.CrossRefGoogle Scholar
  26. [26]
    H. F. Silverman, “Some analysis of microphone arrays for speech data acquisition,”IEEE Trans. Acoust., Speech, Signal Processingvol. ASSP-35, pp. 1699–1712, Dec. 1987.CrossRefGoogle Scholar
  27. [27]
    B. D. Van Veen and K. M. Buckley, “Beamforming: A versatile approach to spatial filtering,”IEEE Acoust. Speech Signal Processing Magazinepp. 4–24, Apr. 1988.Google Scholar
  28. [28]
    B. Wheatley and J. Picone, “Voice across america: Toward robust speaker-independent speech recognition for telecommunications applications,”Digital Signal Processing: A Review Journalvol. 1, pp. 45–63, Apr. 1991.CrossRefGoogle Scholar
  29. [29]
    B. Widrow, K. M. Duvall, R. P. Gooch, and W. C. Newman, “Signal cancellation phenomena in adaptive antennas: Causes and cures,”IEEE Trans. Acoust., Speech, Signal Processingvol. ASSP-30, pp. 469–478, May 1982.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Stephen Oh
    • 1
  • Vishu Viswanathan
    • 1
  1. 1.Texas Instruments, Inc.DallasUSA

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