摘要
噪声声谱控制是噪声环境试验的重要环节,其控制是指控制倍频程或1/3倍频程频带的声压级。针对当前声压级谱控制中低频部分控制精度不够,实时性较差等问题,提出了一种新型的声谱控制方法。按照GB/T 3241-2010中的要求设计1/3倍频程滤波器,并根据声压级谱频段划分的特点和抽样率变换理论,提出了适合实时系统实现的滤波器复用方法和控制算法架构。
Sound pressure level spectrum control is an important part of noise environmental test,and its control refers to the control of octave or 1/3 octave frequency band of sound pressure level.In the control of the current,aiming at the problem of the control precision is not enough at low frequency part and poor real-time performance,a new technique is presented for sound pressure level spectrum control.According to the requirements of GB/T 3241-2010,1/3 octave filters is designed,and through the characteristics of sound pressure level spectrum division and basic multi-rate operations to propose a filter multiplexing method for real-time system and control arithmetic architecture.
作者
王萌
王晓晖
贺智国
张静
WANG Meng;WANG Xiao-hui;HE Zhi-guo;ZHANG Jing(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China)
出处
《强度与环境》
CSCD
2022年第3期58-64,共7页
Structure & Environment Engineering
基金
科技部国家重点研发计划(2021YFB3801700)
重点实验室基金(6142911180512)。
关键词
声谱控制
信号处理
1/3倍频程滤波器
抽样率变换
Sound pressure level spectrum control
Signal processing
1/3 octave filters
Sampling rate conversion
