A self-adaptive stochastic resonator with logarithmic transfer

We introduce a new self-adaptive stochastic resonator system as a simple model for sensing mechanisms. The model is based on a level-crossing detector (LCD) with stepwise, dynamically increasing and relaxing threshold level after each firing event. The transfer function is found to be logarithmic-li...

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Bibliographic Details
Published inChaos, solitons and fractals Vol. 11; no. 12; pp. 1933 - 1935
Main Authors Gingl, Z, Vajtai, R, Kiss, L.B
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2000
Subjects
NOISE
ENHANCEMENT
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Summary:We introduce a new self-adaptive stochastic resonator system as a simple model for sensing mechanisms. The model is based on a level-crossing detector (LCD) with stepwise, dynamically increasing and relaxing threshold level after each firing event. The transfer function is found to be logarithmic-like over a wide range (six decades) of the input signal amplitude. Results on its dynamical response and adaptation characteristics are in accordance with adaptation and overshooting phenomena at real sensing.
ISSN:0960-0779
1873-2887
DOI:10.1016/S0960-0779(99)00132-0