摘要
虚拟式声强分析仪是在克服传统声压测量仪的缺点的基础上,结合虚拟仪器技术,开发出来的一种新型分析仪。虚拟式声强分析仪以傅里叶变换为基础,利用软件和硬件相结合的方法实现了对总声强级及其相应倍频程的实时测量和分析。从硬件部分、软件部分、仪器面板三个方面详细介绍了声强分析仪的设计方法,给出了应用实例并进行了误差分析。该仪器实具有成本低、体积小、操作简单的优点,满足了环境监测和机电产品的实时监测需要。
The Virtual Sound Intensity Analyzer is a new instrument which has more advantages than the traditional Sound Analyzer. This Analyzer is based on fast Fourie transformation and virtual instrument technique.As an application, combining software and hardware, all kinds of weight noise sound level measurement and real-time noise octave analyzes realized synchronously. The design method has been introduced from three ways, which includes hardware, software and panel. An applied example and error analyze of Virtual Sound Intensity Analyzer are given.This Analyzer is low cost, small volume. and it is also easy to operate. It can be widely used in actual applications.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第12期18-21,共4页
Journal of Chongqing University
关键词
噪声测量
实时分析
虚拟仪器
FFT
noise measurement
real-time analyzer
virtual instrument
FFT
