GNU Radio Companion

The GNU Radio Companion (GRC) is a tool that allows users of all levels to

design and modify high-rate signal processing applications. It is the GUI

frontend for GNU Radio application designers.

GNU Radio is centered around the concept of the Block, which is a

node in a signal processing flow graph. Since GNU Radio itself comes with a lot

of useful blocks already, one can start developing real-time and

hardware-interfacing or simulation flow graphs right away, using GRC as the tool

to connect and parameterize these blocks.

GRC itself generates a program in a target language (Python or C++), which

contains all the signal flow setup as defined visually.