Advanced Digital Power

Created and Published by Vito D’Erasmo, Copyright © 2025.
Unauthorized copying, in part or in whole, is prohibited without proper citation and referencing.

This tool reverse-engineers digital signal processing (DSP) filters by calculating their poles and zeros from embedded code coefficients.
It is ideal for analyzing filter performance when original calculations are unavailable.
Filters are represented in one of two ways.

Note that a₀ is always 1.

Enter math frequency (in kHz):

Enter numerator (b_n) coefficients (comma-separated):

Enter denominator (a_n) coefficients (comma-separated):
a₀ is always 1.     

Or upload coefficients file: Load File

Calculate Poles and Zeros

Save results as: Save Results