Parametric Cochlea implemented in FPGA
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Parametric Cochlea implemented in FPGA N IIR filters … MAC based filters Parameters • Clock frequency • Sampling frequency •Number of filters (power of 2) •Input/Output/ Coefficients precision. •Central frequencies. Input signal Zero crossing Energy extraction Abs and S/H • How many times we downsample. … Median Filter • Number of Taps for the median filter … Threshold/ S Trigger •Threshold s. •Delay. Generated events Thresholds
description
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 - PowerPoint PPT Presentation
Transcript of Parametric Cochlea implemented in FPGA
Parametric Cochlea implemented in FPGA
N IIR filters …
MAC based filters
Parameters• Clock frequency• Sampling frequency•Number of filters (power of 2)•Input/Output/Coefficients precision.•Central frequencies.
Inputsignal Zero crossing
Energy extraction
Abs and S/H
• How many times we downsample.
…
MedianFilter
• Number of Taps for the median filter
…
Threshold/S Trigger
•Thresholds.•Delay.
Generatedevents
Thresholds
Inspired by:“Cochlear innervation in the greater horseshoe bat: Demonstration of an acoustic FOVEA.” Volkmar Bruns and Edeltraut Schmieszek (1980)