A simple Nyquist effect plugin to convert I/Q (in-phase and quadrature) signals to Amplitude/Phase (AM decode radio signals). Analyse and decode On-Off-Keying (OOK) / Amplitude-Shift-Keying (ASK) signals recorded by e.g. RTL-SDR software with Audacity.
See What Effect, Generator and Analyzer plug-ins does Audacity support and how do I install them?