一种视频定位的远距离拾音装置  

A Long-range Sound Pickup Device of Video Positioning

作　　者：朱云海 俞杰 徐洪明 

机构地区：[1]宁波三维技术有限公司

出　　处：《电子技术（上海）》2012年第1期22-24,17,共4页Electronic Technology

摘　　要：文章提出了一种视频定位的远距离拾音装置,目的在于提供一种可以有效增强视频监控画面指定目标音源品质,抑制近场音源干扰与噪音,简化后期降噪处理过程,安装使用方便的视频定位远距离拾音装置。包括指向性麦克风、全向麦克风,喇叭形桶体、主信号累加单元、噪声累加单元、后期信号处理单元,在每个喇叭形桶体内底端安装一个指向性麦克风、一个全向麦克风;后期信号处理单元对主信号与噪声信号进行减法处理得到目标语音信号;喇叭形桶体的开口面向目标声源平齐安装在以摄像头为中心的圆周上。此装置已申请中国国家专利局的专利。This paper proposes a long-range sound pick-up device of video positioning, which can effectively strengthen the quality of given target audio source of video monitoring image, supress the infenrence and noice of near-field audio source, simplify post noice-reduction processing, and feasures easy to install and use. It consists of directional microphone, omnidirectional microphone, horn-shape barrel body, main signal accumulation unit, noise accumulation unit, post signal processing unit, and under the bottom of each horn shap barrel body a directional microphne and a omnidirectional microphne are mounted. The post signal processing unit is used to carry out substration processing obtaining target audiol signal. The opening of the horn shape barrel body is oriented to target audio source and mounted the circumference which takes camara as the center. This device has been applied for China＇s patent.

关 键 词：视频定位 远距离拾音 近场噪音 降噪 指向性麦克风 

分 类 号：TN912.12[电子电信—通信与信息系统]