python

Digital Biquad Filters

This repository contains a collection of digital biquad filters implemented in Python.

The filters are based off the C++ implementation, which can be found here.

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Brief:

For information on biquad filters, you can check out my website here.

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Usage:

To use any of the filters, just create an instance of the filter and process your data:

from biquads import LowPassFilter
import numpy as np

data_in = np.array([0.1, 0.2, 0.3, 0.4, 0.5])

lpf = LowPassFilter.create(
    cutoff=1000.0,
    sample_rate=44100,
    q_factor=0.707
)

if lpf is not None:
    data_out = lpf.process(data)

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Supported Filters:

• Generic Digital Biquad
• Low Pass
• High Pass
• Band Pass
• Notch
• All Pass
• Peaking EQ
• Low Shelf
• High Shelf