message: Demo: solved noise reduction bug.
  The value of the small signal threshold it is changed if the backspace is pressed.
diff: @@ -748,6 +748,9 @@ void AdiTofDemoView::render() {
  }
  } else if (backspace) {
  value = value.substr(0, value.size() - 1);
  + if (value.compare("") != 0) {
  + smallSignalThreshold = stoi(value);
  + }
  }
  }
  