多路噪声测量系统的研制

本描述了多路噪声测量系统的建立，该系统是一以微机为中心的数字化系统，可实现对４路稳态宽带噪声的测量，测量参数是线性声压级和倍频带声压级。系统由微机、ＴＭＳ３２０Ｃ３０板、多路ＡＤ板、传感器、放大器等设备构成硬件系统，并通过编制Ｃ３０板嵌入式软件和微机主控程序实现系统功能。在软件编制中结合数字信号处理技术，并结合硬件特性优化程序设计，本系统测量方法简易，快捷和精度高，在噪声测量领域具有较高实用价值

Development of a multiple-channel noise measuring system

This paper describes a multiple-channel noise measurement system, which is a digital system and uses a computer as its core. The system measures four channels wideband noise simultaneously. The measured parameters are the sound pressure level and the sound pressure level of octave band. The hardware in system consists of computer, digital processing card(TMS320C30), analog-to-digital converter, sensors and amplifiers. The software included the embedded software of C30 card and the master control program of the computer. In the software design, the hardware properties are taken into account, and the digital processing technique is adopted. The system is easy to use, the measurement is quick, and the results of the measured acoustic parameters are accurate. It could be very useful in the noise measurement field.