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adis300 / filter-c

Elegant Butterworth and Chebyshev filter implemented in C, with float/double precision support. Works well on many platforms. You can also use this package in C++ and bridge to many other languages for good performance.
MIT License
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butterworth butterworth-filter chebyshev chebyshev-filter filter signal-processing

readme

filter-c

Elegant Butterworth and Chebyshev filter implemented in C, with float/double precision support. Works well on many platforms. You can also use this package in C++ and bridge to many other languages for good performance.

Features

This imlementation is based on algorithm from https://exstrom.com/journal/sigproc/dsigproc.html

Run example

make example
./example

Steps to use a filter

  1. Create a filter object using create_***_pass/stop(params...)

  2. Use filter to filter incoming numbers one by one. The output is a double or float that can be specified in header.

  3. After using the filter, release the filter using free_***_pass/stop(filter).