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Analog VLSI Implementations of Auditory Wavelet Transforms Using Switched-Capacitor Circuits
A general scheme for the VLSI implementation of auditory wavelet transforms is proposed using switched-capacitor (SC) circuits. SC circuits are well suited for this application since the dilation constant across different ...
Cochlear Filters Design Using a Parallel Dilating-Biquad Switched-Capacitor Filter Bank
A parallel filter bank is proposed to implement cochlear filters using very large time-constant (VLT) switched-capacitor (SC) filters. Significant hardware reduction is achieved in three ways. First, VLT SC biquads are ...
Realization of Cochlear Model by VLT Switched-Capacitor Filter Biquads
We describe here the realization of a cochlear model using switched capacitor filters (SCF). This approach is made possible by a new design technique, called charge differencing (CD), which reduces by up to 50% the silicon ...
Representation of Spectral Profiles in the Auditory System, I: A Ripple Analysis Model
A model of profile analysis is proposed in which a spectral profile is assumed to be represented by a weighted sum of sinusoidally modulated spectra (ripples). The analysis is performed by a bank of bandpass filters, each ...