Microphone Array Directivity Improvement in Low-Frequency Band for Speech Processing

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9811)

Abstract

This paper presents a new method of improving microphone array directivity in the low-frequency band. The method is based on a sub-band processing technique. We also evaluate the parameters and characteristics of the method and consider some of its practical implementations.

Keywords

Microphone array Sub-band processing Directivity pattern Directivity index 

Notes

Acknowledgement

This work was financially supported by the Government of the Russian Federation, Grant 074-U01.

References

  1. 1.
    McCowan, I.: Microphone arrays: a tutorial (2001). URL: http://www.idiap.ch/~mccowan/arrays/tutorial.pdf
  2. 2.
    Bitzer, J., Simmer, K.U.: Superdirective microphone arrays. In: Brandstein, M., Ward, D. (eds.) Microphone Arrays: Signal Processing Techniques and Applications, pp. 19–38. Springer, Heidelberg (2001)CrossRefGoogle Scholar
  3. 3.
    Aleinik, S., Stolbov, M.: A comparative study of speech processing in microphone arrays with multichannel alignment and zelinski post-filtering. In: Ronzhin, A., Potapova, R., Fakotakis, N. (eds.) SPECOM 2015. LNCS, vol. 9319, pp. 34–41. Springer, Heidelberg (2015)CrossRefGoogle Scholar
  4. 4.
    Löllmann, H.W., Vary, P.: Post-filter design for superdirective beamformers with closely spaced microphones. In: Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA 2007), pp. 291–294 (2007)Google Scholar
  5. 5.
    Fischer, S., Kammeyer, K.D.: Broadband beamforming with adaptive postfiltering for speech acquisition in noisy environment. In: Proceedings of International Conference on Acoustics, Speech, and Signal Processing, pp. 359–362 (1997)Google Scholar
  6. 6.
    Carlson, B.: Covariance matrix estimation errors and diagonal loading in adaptive arrays. IEEE Trans. Aerosp. Electron. Syst. 24(3), 397–401 (1988)CrossRefGoogle Scholar
  7. 7.
    Ba, D.E., Dinei, F., Cha, Z.: Enhanced MVDR beamforming for arrays of directional microphones. In: IEEE Conference on Multimedia and Expo, pp. 1307–131 (2007)Google Scholar
  8. 8.
    Kozlov, A., Kudashev, O., Matveev, Y., Pekhovsky, T., Simonchik, K., Shulipa, A.: SVID speaker recognition system for NIST SRE 2012. In: Železný, M., Habernal, I., Ronzhin, A. (eds.) SPECOM 2013. LNCS, vol. 8113, pp. 278–285. Springer, Heidelberg (2013)CrossRefGoogle Scholar
  9. 9.
    Karpov, A., Akarun, L., Yalcin, H., Ronzhin, A., Demiroz, B., Coban, A., Zelezny, M.: Audio-visual signal processing in a multimodal assisted living environment. In: Proceedings of INTERSPEECH 2014, pp. 1023–1027 (2014)Google Scholar
  10. 10.
    Buck, M., Roessler, M.: First order differential microphone arrays for automotive applications. In: Seventh International Workshop on Acoustic Echo and Noise Control (IWAENC 2001), Darmstadt, pp. 19–22 (2001)Google Scholar

Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Speech Technology CenterSt. PetersburgRussia
  2. 2.ITMO UniversitySt. PetersburgRussia
  3. 3.Alango Technologies Ltd.St. PetersburgRussia

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