Notice of RetractionThe Research of Multi-media Teaching in “Signals and Systems” Course

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE\´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

"Signals and Systems" is a fundamental technologic course in electronic information specialty. With the rapid development of modern teaching technology, multimedia teaching has been abroad used in "Signals and Systems" course. Such kind of modern teaching mode could optimize teaching circumstance, inspire students\´ interest, enhance the information of classroom and improve teaching efficiency, which has the unexampled predominance of traditional teaching mode. In the mean time, multimedia teaching both has its own disadvantages, such as faintish teacher dominance, ambiguity application purpose and too large quantity of information. Exerting the advantages of multimedia teaching and combining multimedia teaching with traditional teaching mode will increase teaching quality obviously.