Python implementation of a Phase Vocoder for real-time CLI use with a RTLSDR (wav files are also supported!). Currently meant for pitch shifting incoming signals.
pypv requires a few additional python packages:
- numpy
- scipy
- rtlsdr
After cloning the repository, the simplest way to get going is to plug in a RTLSDR and run:
python pypv.py
However, additional flags are available. -s allows source selection. Sources can be either a wav file or the SDR, with specifiable tuning. For example:
python pypv.py -s sdr 90.4
Sets source to SDR with a center frequency of 90.4MHz
python pypv.py -s ./resources/test_chirp.wav
Sets source to the contents of test_chirp.wav
The -p flag selects the processor. Currently the only options are pitch for pitch shifting and bypass to bypass the phase vocoder. For example:
python pypv.py -p bypass
Bypasses the PV
These flags can mixed, for example:
python pypv.py -s sdr 90.4 -p bypass
Tunes the SDR to 90.4MHz and bypasses the PV - functionally a real-time CLI radio client!