2015-10-18 23:06:39 -07:00
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# random dsp code
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it's a bunch of half-baked python code that's kinda handy.
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don't expect commits, docs, or comments to be any verbose.
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## the stuff
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* a basic BS.1770-3 normalization implementation
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— [bs.py](/lib/bs.py)
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* biquad butterworth/chebyshev filters [(via DSPFilters)][dspf]
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— [butterworth.py](/lib/butterworth.py)
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2015-10-19 04:04:32 -07:00
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* bilinear transformation: s-plane to z-plane
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2015-10-18 23:06:39 -07:00
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— [planes.py](/lib/planes.py)
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* various functions for biquad filters
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— [bq.py](/lib/bq.py) [\_\_init\_\_.py](/lib/__init__.py)
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* some functions for state-variable filters [(via Raph Levien)][svf]
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— [svf.py](/lib/svf.py)
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* sine sweeps, and the Optimized Aoshima's Time-Stretched Pulse [(via here)][sweeps]
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— [sweeps.py](/lib/sweeps.py)
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* a lot of stuff for magnitude plotting like tilting and smoothing
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— [fft.py](/lib/fft.py) [smoothfft.py](/lib/smoothfft.py) [\_\_init\_\_.py](/lib/__init__.py)
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* rough experiments with psychoacoustic equalization ("neon pink" and other crap)
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— [data.py](/lib/data.py) [\_\_init\_\_.py](/lib/__init__.py)
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* miscellaneous matplotlib stuff
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— [plot.py](/lib/plot.py)
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* miscellaneous utility functions
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— [util.py](/lib/util.py) [wav.py](/lib/wav.py)
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[dspf]: https://github.com/vinniefalco/DSPFilters/
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[sweeps]: http://www.sound.sie.dendai.ac.jp/dsp/e-21.html
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[svf]: http://nbviewer.ipython.org/urls/music-synthesizer-for-android.googlecode.com/git/lab/Second%20order%20sections%20in%20matrix%20form.ipynb
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all wrapped up in a inconveniently generic "lib" module!
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## dependencies
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python 3.4+
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numpy scipy sympy matplotlib ewave
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usually run in an ipython environment.
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