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With the needs of national construction and development, more and more enterprises and institutions have constructed lecture hall. Due to the continuous appearance of new technologies and new products, especially multimedia and remote network technologies, the sound reinforcement of the lecture hall has also changed from original Only to meet the requirements of language clarity towards multi-functional, diversified direction to adapt to and adapt to the realization of new technologies.

      Multi-purpose hall function

      A complete multi-purpose hall report, press releases, small theatrical performances and other functions; the system is equipped with: sound reinforcement system, the display system, the conference system (including voting, simultaneous interpretation), network systems, video teleconferencing ) System, a centralized control system, handshake system, lighting system (to meet the small performance, conference lighting, camera color temperature and illumination and other multi-mode requirements). The following discussion of sound reinforcement sound field design and system implementation.

      Sound reinforcement system design requirements
      
      As with all PA system design requirements, it requires: good clarity and intelligibility, compliance with national sound field standards, consistent audio and video, good sound quality and tone. Especially in the senior lecture hall, the sound image is consistent and good tone is very important.

      Sound reinforcement system design

      Center channel (mainly used for voice amplification) The speaker is designed as usual, with full coverage and can be installed in the middle of the sound bridge. Each side is equipped with a pull sound like loudspeaker as auxiliary sound reinforcement (small volume) Road speakers can be installed in the mouth bridge sound left and right ends, the audience coverage, pull the sound like speakers and the central channel pull sound like speakers (or as the front left and right of the main PA speakers), so the composition 3-channel speaker sound reinforcement mode.