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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

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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

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Page 1: 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

Page 2: Parametric Cochlea implemented in FPGA

Inspired by:“Cochlear innervation in the greater horseshoe bat: Demonstration of an acoustic FOVEA.” Volkmar Bruns and Edeltraut Schmieszek (1980)


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