This code controls a GUI window, which provides monitoring of the internal status of a time domain echo canceller. It shows, graphically:
- the spectrum of the received signal.
- the line model in use (when a known line model is being used).
- the adapted coefficients of the canceller.
This code uses the FLTK cross platform GUI toolkit. It works on X11 and Windows platforms. In addition to the basic FLTK toolkit, fltk_cartesian is also required.