[IEEE 2017 IEEE International Conference on Smart Technologies and Management for Computing, Communication, Controls, Energy and Materials (ICSTM) - Chennai, India (2017.8.2-2017.8.4)] 2017 IEEE International Conference on Smart Technologies and Management for Computing, Communication, Controls, Energy and Materials (ICSTM) - Delivery monitoring system for teachers' voice in traditional classrooms and automatic controlling system in smart/remote classrooms