【摘要】 目前,多媒体教室已经成为高校教育教学的主要场所,扩声系统是多媒体教室设备的重要组成部分,但是在多媒体教室密集的教学楼或区域紧凑的教室群,现有技术的有线话筒已经不能满足应用需求。文章首先介绍了多媒体教室扩声系统的发展历程,包括有线(移频)话筒、红外线无线话筒等过渡性技术,其次,详细阐述了四种无线扩声技术的特点,并做了总结对比,通过技术比较表明,蓝牙无线话筒是目前多媒体教室无线话筒的技术发展趋势。更多还原

【Abstract】 At present,the multimedia classroom has become the main place of college education and teaching,sound reinforcement system is an important part of multimedia classroom equipment,but in the multimedia classroom teaching buildings or areas of dense compact classroom group,wired microphone existing technology can no longer meet the application requirements.The paper firstly introduces the development of sound reinforcement system of multimedia classroom,including cable(frequency) receiver,infrared wireless microphone transitional technology,secondly,characteristics of four kinds of wireless audio technology is described in detail,and make a summary comparison,through technology comparison,blue tooth wireless microphone is technical development trend of multimedia classroom wireless microphone at present.更多还原