hz.tools/am: analog am radio demodulator

Paul Tagliamonte 2023-02-22 project

The hz.tools/am package contains a demodulator for AM analog radio. This code is a bit old, so it has a lot of room for cleanup, but it’ll do a very basic demodulation of IQ to audio.

The git repo can be found at github.com/hztools/go-am, and is importable as hz.tools/am.