boost::shared_ptr<Combiner> _combiner;
boost::shared_ptr<Matcher> _matcher;
boost::shared_ptr<DelayLine> _delay_line;
boost::shared_ptr<Gain> _gain;
boost::shared_ptr<Combiner> _combiner;
boost::shared_ptr<Matcher> _matcher;
boost::shared_ptr<DelayLine> _delay_line;
boost::shared_ptr<Gain> _gain;