- Free & OS emulation of the SP-12 & SP-1200 signal chain (now with GUI)
- Pitch shift / bitcrush / resample audio files
- Written and tested in Python v3.10.7 on Windows 10 & MacOS Mojave 10.14.6
- Based on Physical and Behavioral Circuit Modeling of the SP-12 Sampler, DT Yeh, 2007 & Slides
- Audio examples here and here
1. Use git to clone this repo, or download it as a ZIP using the "Clone or download" button & unzip
2. Open your terminal of choice
3. cd to the new pitcher directory
4. pip install -r ./requirements.txt
python pitcher_cli.py --input-file ./input.wav --st -4 --output-file ./output.wav
You can now also run a simple gui version using the command:
python pitcher_gui.py
The releases page also has binary files for the GUI (.exe and .app).
--st - number of semitones to shift pitch by, int, required
--input-file - path to input file, string, required
--output-file - path to output file, string, required
--log-level - sets logging threshold, string, default 'INFO'
--input-filter - input anti aliasing low pass filter, flag, default True
--quantize - simulate ADC quantize, flag, default True
--time-stretch - enable or disable time_shift entirely, flag, default True
--output-filter - skip all output filtering (default and moog), flag, default True
--normalize-output - normalize output volume to , flag, default False
--quantize-bits - bit rate of quantized output, int, default 12
--custom-time-stretch - custom shift, 1.0 for device default, 0.0 for none, float, default 1.0
--output-filter-type - 'lp1', 'lp2' or 'moog' str, default 'lp1'
lp1 cutoff = 7.5kHz, lp2 cutoff = 10kHz, moog=10kHz
--moog-output-filter-cutoff - set cutoff for moog SSM2044 approximation, int, default 10000
--force-mono - convert input to mono, ouput will also be mono, flag, default False
If you find this project useful, please consider donating to the NAACP Legal Defense Fund or BLM CA