In this paper we present a 2-D silicon cochlea which includes an automatic quality factor control (AQC) loop. This control-loop is an improved version of that presented in [1] where the control-loop imposes both a ceiling and a threshold level on the output amplitude of the basilar membrane (BM) resonators. In this improved version we include only a single set-point in our control-loop. This allows us to tune the BM resonators close to a Hopf bifurcation. We present test results from a fabricated integrated circuit which, when compared with biological data, demonstrates the feasibility of our active 2-D cochlea model. ©2008 IEEE.
CITATION STYLE
Hamilton, T. J., Jin, C., Van Schaik, A., & Tapson, J. (2008). A 2-D silicon cochlea with an improved automatic quality factor control-loop. In Proceedings - IEEE International Symposium on Circuits and Systems (pp. 1772–1775). https://doi.org/10.1109/ISCAS.2008.4541782
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