声级计频率计权特性自动检定系统研究与实现  

Design and Realization of Automatic Calibration System on Frequency Weighting of Sound Level Meter

作　　者：钟波[1] 孙庆生[2] 王雪晶[2] 牛峰[1] 

机构地区：[1]中国计量科学研究院力学与声学所,北京100013 [2]北京化工大学信息科学与技术学院,北京100029

出　　处：《电声技术》2010年第5期37-40,共4页Audio Engineering

摘　　要：分析了现有声级计自动检定系统存在的问题,提出了一种基于图像识别技术的声级计频率计权自动检定系统的设计方法。该系统能够完成声场的自动校准和声压级的自动回放,并能根据摄像头采集的图像自动识别声级计的读数,同时记录检定结果,并将检定数据自动输出到检定报告中。该系统具有自动化程度高、操作简便、通用性强等特点。实验结果表明,该自动检定系统可较好地应用于声级计的检定工作。The existing problems of sound level meter are analyzed and an automatic calibration system on frequency weight based on image recognition is presented. The system can automate the procedure of sound field calibrating and sound-pressure level replaying. Through the image-recognition technology, it can automatically obtain the sound level meter readings. Meanwhile, calibration data will be stored and outputted to calibration report automatically by the system. With the feature of high-efficiency and easy-operation, the system is well competent for calibration, and it has been proved by experiment.

关 键 词：声级计 自动检定 图像识别 频率计权 

分 类 号：TB52[理学—物理]