摘要
某政府会议室是领导召开日常工作会议的重要场所,对音视频系统要求很高,尤其是该会议室数字会议发言单元很多,如何保证系统稳定可靠、不啸叫,每个与会者听得见、听得清,以及显示图像清晰、稳定,这就需要音视频系统具备稳定可靠的冗余结构和良好的传输频率特性、声场不均匀度、传声增益、语言传输指数和分辨率等高性能指标要求。主要阐述了该会议室音视系统的设计和调试技术,以及最终达到的良好效果。
The Conference Room of A government is an important place for holding daily work meeting,so it needs high demands on the audio and video system. There are lots of digital speech units in the Conference Room. It is very important how to ensure that the Conference Room system is stable,reliable and no screaming,everyone can hear clearly,and the display images are clear and stable. This requires that the audio and video system not only has stable and reliable redundant structure,but also needs high performance requirements in transmission frequency characteristic,non-uniformity of sound field,sound transmission gain,speech transmission index and resolution. The design and adjustment technologies of the audio and video system,and how to achieve good effects in the Conference Room are described.
出处
《电声技术》
2014年第7期5-11,共7页
Audio Engineering
关键词
传声增益
语言传输指数
传输频率特性
声场不均匀度
混响时间
分辨率
audio gain
Speech Transmission Index for Public Address（STIPA）
transmission frequency characteristics
sound field nonunifornity
reverberation time
resolution
作者简介
雷鸣。高级工程师，主要从事专业音视频工程系统设计；
李媛敏，高级工程师，主要从事专业音视频工程系统设计；
唐文，高级工程师，主要从事专业音视频工程系统设计；
吕品，助理工程师，主要从事专业音视频工程系统设计。
