Multimedia classroom audiovisual system design proposal

First, the system consists of
1. Sound reinforcement system
2, video display system
3. Electronic writing system

Second, the system function

1. Sound reinforcement system

The sound reinforcement of the classroom is mainly to pursue the clarity of the voice and the uniform sound field. Therefore, the above principles must be followed in the selection and arrangement of the speakers. Usually, the speaker uses a small speaker, a coaxial speaker or a ceiling speaker; the arrangement is distributed in a distributed manner, thereby obtaining a relatively uniform sound field, effectively preventing the occurrence of howling.

Main equipment: mixer speaker amplifier

2, video display system

The classroom is usually used for teaching, so the requirements of the video display system are mainly: the display is clear, which can meet the audience of the whole audience; it has high brightness, which can display normally in the normal lighting environment; the input signal is diverse, and it can satisfy various video signals. Input; the system is stable and reliable, avoiding interruption of the teaching process. Generally, according to the size of the venue, the appropriate projection screen and the appropriate projector brightness are selected as the video display main device; the projection screen can be selected from the electric screen or the manual screen, and can be fixed or flow mounted.

Main equipment: projector projection screen

3, electronic whiteboard or writing screen system

Classrooms are used for teaching, and writing is inevitable. Traditional writing usually uses blackboards and chalks or whiteboard pens. The dusty dust of chalk has already caused the teachers and front-end audiences to suffer. Moreover, the teachers are standing and writing. The teacher was exhausted and did not communicate directly with the students in a timely manner. Based on the above drawbacks, the electronic writing system came into being, which has replaced the traditional writing. The electronic writing system is written directly on the LCD screen. It can be projected onto the projection screen through the projector. In addition to solving the above drawbacks, it also has The writing content can be saved in real time for later recall; the content can be distributed to the listener through the printer; the teaching content can be shared with the remote personnel via the internet.

Main equipment: Abbott, projection treasure polygon Honghe interactive whiteboard