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Improved implementation of the silicon cochlea

Watts, Lloyd and Kerns, Douglas A. and Lyon, Richard F. and Mead, Carver A. (1992) Improved implementation of the silicon cochlea. IEEE Journal of Solid-State Circuits, 27 (5). pp. 692-700. ISSN 0018-9200. doi:10.1109/4.133156.

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The original “analog electronic cochlea” of Lyon and Mead (1988) used a cascade of second-order filter sections in subthreshold analog VLSI to implement a low-power, real-time model of early auditory processing. Experience with many silicon-cochlea chips has allowed the identification of a number of important design issues, namely dynamic range, stability, device mismatch, and compactness. In this paper, the original design is discussed in light of these issues, and circuit and layout techniques are described which significantly improve its performance, robustness, and efficiency. Measurements from test chips verify the improved performance.

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Additional Information:© Copyright 1992 IEEE. Manuscript received September 30, 1991; revised January 17, 1992. This work was supported by the Office of Naval Research and the System Development Foundation. IEEE Log Number 9107225. The authors are pleased to acknowledge many helpful discussions with X. Arreguit and J. Lazzaro. We thank M. Sivilotti for suggesting the symbol for the wide-range input amplifier. Chip fabrication was provided by the Defense Advanced Research Projects Agency and the MOSIS Service.
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Office of Naval Research (ONR)UNSPECIFIED
System Development FoundationUNSPECIFIED
Issue or Number:5
Record Number:CaltechAUTHORS:20141222-121340994
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53095
Deposited On:22 Dec 2014 20:53
Last Modified:10 Nov 2021 19:48

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