• DocumentCode
    2570960
  • Title

    A 360-Channel Speech Preprocessor that Emulates the Cochlear Amplifier

  • Author

    Wen, Bo ; Boahen, Kwabena

  • Author_Institution
    Pennsylvania Univ., Philadelphia, PA
  • fYear
    2006
  • fDate
    6-9 Feb. 2006
  • Firstpage
    2268
  • Lastpage
    2277
  • Abstract
    A cochlea-based preprocessor for speech recognition emulates the fluid ducts with two 4680-element diffusive grids, the basilar membrane with 360 2nd-order sections, and the auditory nerve with 2160 pulse-frequency modulators. Integrated in 10.9mm2in 0.25mum CMOS and consuming 52mW, this silicon cochlea employs active bidirectional coupling, a selective amplification mechanism that sharpens tuning (Q10 is 2.7) and controls gain (24dB compression)
  • Keywords
    CMOS integrated circuits; biomedical electronics; ear; microprocessor chips; neural chips; prosthetics; speech recognition; 0.25 micron; 24 dB; 52 mW; CMOS integrated circuit; active bidirectional coupling; basilar membrane; cochlea-based preprocessor; cochlear amplifier; selective amplification mechanism; speech preprocessor; speech recognition; Acoustic noise; Cellular phones; Damping; Filter bank; Frequency; Gain control; Personal digital assistants; Pulse modulation; Silicon; Speech recognition;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 2006. ISSCC 2006. Digest of Technical Papers. IEEE International
  • Conference_Location
    San Francisco, CA
  • ISSN
    0193-6530
  • Print_ISBN
    1-4244-0079-1
  • Type

    conf

  • DOI
    10.1109/ISSCC.2006.1696289
  • Filename
    1696289
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2570960