【摘要】 风机噪声降低是环境保护的一个重要研究课题.本文分析了风机噪声的主要来源及其噪声产生机理。介绍了一种微机化噪声测量系统。该系统以声级计和微机为核心,装上由信号调理和模数转换两部分组成的数据采集卡,完成对风机噪声的测量.更多还原

【Abstract】 Reducing noise in is a very important research subject of environmental protection. This text analyze the main source of noise in and its principle of generating noise. At the same time, a computerized noise measurement system is introduced. Its core is a microcomputer in which a data acquisition card is installed. The system can perform noise measurement by using hardware resources of computer.更多还原