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Alternative FIR filter design software is needed #36

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jj1bdx opened this issue Feb 17, 2022 · 2 comments
Open

Alternative FIR filter design software is needed #36

jj1bdx opened this issue Feb 17, 2022 · 2 comments
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@jj1bdx
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jj1bdx commented Feb 17, 2022

As of February 2022, the Iowa Hills Software web page is gone. Archive.org link: http://web.archive.org/web/20210511075358/http://iowahills.com/8DownloadPage.html

The core software is on GitHub (thx @hayguen) and that is good: https://github.com/hayguen/iowahills_dsp
but I have been using the Windows GUI software of Iowa Hills FIR designer, so I need to reorganize the filter design flow.

@jj1bdx jj1bdx self-assigned this Feb 17, 2022
@jj1bdx
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jj1bdx commented Feb 17, 2022

Displaying the designed filter frequency/phase diagrams can be performed via SciPy (scipy.signal) and matplotlib, as already done in doc/ directory. Issues that need to solve:

  • Filter design software (scipy.signal can handle this, but displaying the result after tweaking the parameter requires the dedicated tool)
  • Recording filter design parameters (currently done via Iowa Hills proprietary formats, should be rewritten to use an open format, such as scipy.signal function parameters)

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jj1bdx commented May 28, 2023

PyFDA seems to be a good alternative of a filter design tool.

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