audio/welle.io: create port
welle.io is a graphical SDR DAB/DAB+ receiver built with Qt5 with extensive
hardware support. Possible backends are RTL-SDR, RTL_TCP, AirSpy, SoapySDR,
raw files as well as gr-osmosdr and uhd.
PR: 250564
Submitted by: Nico Sonack <nsonack@outlook.com>