1/3倍频程频谱分析系统的数字化设计与实现 |
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引用本文: | 沈秋霞,姚青,陈淑敏,童基均,周营烽.1/3倍频程频谱分析系统的数字化设计与实现[J].工业控制计算机,2008,21(10). |
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作者姓名: | 沈秋霞 姚青 陈淑敏 童基均 周营烽 |
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作者单位: | 浙江理工大学信息电子学院,浙江,杭州,310018 |
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摘 要: | 1/3倍频程的频谱分析是噪声检测中重要的测量项目.针对基于模拟电路的1/3倍频程频谱分析系统存在线路复杂、效率低、鲁棒性差等缺点,提出了全数字化的频谱分析系统方案.详细介绍了整个频谱分析系统的软硬件设计,着重分析了结合多抽样率原理的1/3倍频程实时算法和设计要点,实现对各种稳态与非稳态噪声信号的快速、准确和高精度的测量分析与显示等功能.
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关 键 词: | 1/3倍频程 多抽样率 频谱分析 |
Design and Implementation of Digital One-third Octave Spectrum Analysis |
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Abstract: | 1 /3 octave spectrum analysis is an important noise measurement.For analog circuits of 1 /3 octave existing disadvantages of complex circuitry,low efficiency,poor robustness,the entire digital system based on DSP is designed to achieve high-precision real-time spectrum analysis.Detailed hardware and software design of the spectrum analysis system,emphasis on 1 /3octave real-time algorithms used the multlrate principle and design features,realize high-precision measurement in the rapid speed and display func... |
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Keywords: | DSP |
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