minimum-phase FIR filter design

An approximate minimum-phase FIR filter design from specified frequency characteristic by use Hilbert transform.

github repository

usage

python FIR-design1.py
draw frequency phase characteristic of approximate minimum-phase FIR filter from the frequency characteristic, freq_gain_table.csv.
save FIR filter coefficient to a text file.

output sample

frequency characteristic of freq_gain_table_csv

frequency phase characteristic with approximate minimum phase by use Hilbert transform

impulse waveform

frequency phase characteristic of FIR length 44100 by use scipy.signal.freqz

frequency phase characteristic of FIR length 8253 by use scipy.signal.freqz

requirements package

python3
Please see Check version in FIR-design1.py.

License

MIT