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Parametric Cochlea implemented in FPGA

This project involves implementing a parametric cochlea model in FPGA for processing input signals and generating events through various filters and thresholds. Inspired by the cochlear innervation in bats, this system features zero-crossing, median filtering, energy extraction, and more.

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Parametric Cochlea implemented in FPGA

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  1. Parametric Cochlea implemented in FPGA Input signal Generated events Zero crossing Median Filter Threshold/ S Trigger N IIR filters Energy extraction … … … Abs and S/H MAC based filters Thresholds Parameters • Clock frequency • Sampling frequency • Number of filters (power of 2) • Input/Output/Coefficients precision. • Central frequencies. • How many times we downsample. • Number of Taps for the median filter • Thresholds. • Delay.

  2. Inspired by: “Cochlear innervation in the greater horseshoe bat: Demonstration of an acoustic FOVEA.” VolkmarBruns and EdeltrautSchmieszek (1980)

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