52 lines
1.5 KiB
Markdown
52 lines
1.5 KiB
Markdown
|
# random dsp code
|
||
|
|
|
||
|
|
it's a bunch of half-baked python code that's kinda handy.
|
||
|
|
|
||
|
|
don't expect commits, docs, or comments to be any verbose.
|
||
|
|
|
||
|
|
## the stuff
|
||
|
|
|
||
|
|
* a basic BS.1770-3 normalization implementation
|
||
|
|
— [bs.py](/lib/bs.py)
|
||
|
|
|
||
|
|
* biquad butterworth/chebyshev filters [(via DSPFilters)][dspf]
|
||
|
|
— [nsf.py](/lib/nsf.py)
|
||
|
|
|
||
|
|
* bilinear transformation: s-plane to z-plane
|
||
|
|
— [planes.py](/lib/planes.py)
|
||
|
|
|
||
|
|
* various functions for biquad filters
|
||
|
|
— [bq.py](/lib/bq.py) [\_\_init\_\_.py](/lib/__init__.py)
|
||
|
|
|
||
|
|
* some functions for state-variable filters [(via Raph Levien)][svf]
|
||
|
|
— [svf.py](/lib/svf.py)
|
||
|
|
|
||
|
|
* sine sweeps, and the Optimized Aoshima's Time-Stretched Pulse [(via here)][sweeps]
|
||
|
|
— [sweeps.py](/lib/sweeps.py)
|
||
|
|
|
||
|
|
* a lot of stuff for magnitude plotting like tilting and smoothing
|
||
|
|
— [fft.py](/lib/fft.py) [smoothfft.py](/lib/smoothfft.py) [\_\_init\_\_.py](/lib/__init__.py)
|
||
|
|
|
||
|
|
* rough experiments with psychoacoustic equalization ("neon pink" and other crap)
|
||
|
|
— [data.py](/lib/data.py) [\_\_init\_\_.py](/lib/__init__.py)
|
||
|
|
|
||
|
|
* miscellaneous matplotlib stuff
|
||
|
|
— [plot.py](/lib/plot.py)
|
||
|
|
|
||
|
|
* miscellaneous utility functions
|
||
|
|
— [util.py](/lib/util.py) [wav.py](/lib/wav.py)
|
||
|
|
|
||
|
|
[dspf]: https://github.com/vinniefalco/DSPFilters/
|
||
|
|
[sweeps]: http://www.sound.sie.dendai.ac.jp/dsp/e-21.html
|
||
|
|
[svf]: http://nbviewer.ipython.org/urls/music-synthesizer-for-android.googlecode.com/git/lab/Second%20order%20sections%20in%20matrix%20form.ipynb
|
||
|
|
|
||
|
|
all wrapped up in a inconveniently named "lib" module!
|
||
|
|
|
||
|
|
## dependencies
|
||
|
|
|
||
|
|
python 3.5+
|
||
|
|
|
||
|
|
numpy scipy sympy matplotlib ewave
|
||
|
|
|
||
|
|
usually run in an ipython environment.
|