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A Time-Frequency Aware Cochlear Implant: Algorithm and System

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Part of the Lecture Notes in Computer Science book series (LNTCS,volume 7368)

Abstract

A time-frequency aware (TFA) cochlear implant system and its speech processing strategy (TFA-CIS) are presented in this paper. The system is built upon an implanted low-power digital signal processor (THUCIDSP). And the TFA-CIS strategy takes advantages of the time-frequency aware wavelet packet (WP) filter bank (FB) and WP envelope detector. The joint use of the DSP hardware and the TFA strategy gives birth to a very low power cochlear implant system. Implementation result shows that the complexity of the new TFA-CIS algorithm is 1.82 million instructions per second (MIPS) with db1 wavelet base, and the power dissipation of the DSP is 2.11mW @1.8V, 3MHz.

Keywords

  • Cochlear Implant
  • CIS
  • Wavelet Packet
  • DSP

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© 2012 Springer-Verlag Berlin Heidelberg

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Mai, S., Zhao, Y., Zhang, C., Wang, Z. (2012). A Time-Frequency Aware Cochlear Implant: Algorithm and System. In: Wang, J., Yen, G.G., Polycarpou, M.M. (eds) Advances in Neural Networks – ISNN 2012. ISNN 2012. Lecture Notes in Computer Science, vol 7368. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31362-2_18

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  • DOI: https://doi.org/10.1007/978-3-642-31362-2_18

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-31361-5

  • Online ISBN: 978-3-642-31362-2

  • eBook Packages: Computer ScienceComputer Science (R0)