: wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
, _gain (0)
, _smoothing (max_smoothing / 2)
: wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
, _gain (0)
, _smoothing (max_smoothing / 2)