| 复调制ZOOMFFT在车辆发动机声信号谱估计中的应用 |
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| 引用本文： | 刘国鹏,吕晶晶,马艳娥,姚金杰.复调制ZOOMFFT在车辆发动机声信号谱估计中的应用[J].电子测试,2011(7):5-7. |
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| 作者姓名： | 刘国鹏 吕晶晶 马艳娥 姚金杰 |
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| 作者单位： | 中北大学信息探测与处理技术研究所,山西太原,030051 |
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| 基金项目： | 国防重点实验室基金项目资助(9140c1204040908) |
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| 摘 要： | 针对传统方法在车辆发动机声信号频谱研究中分辨率低的问题,提出将基于复调制的ZOOMFFT算法应用于车辆发动机声信号频谱研究中,基于复调制的ZOOMFFT算法可以很好地局部放大信号频谱、大大提高细化倍数及运算速度从而提高信号的频谱分辨率,并将ZOOMFFT算法与传统谱估计算法FFT及最大熵算法进行了比较.利用MATLAB...
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| 关 键 词： | 声信号 频谱 ZOOMFFT 复调制 |
ZOOMFFT complex modulation signals in the vehicle engine sound application of spectral estimation |
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| Liu Guopeng,Lv Jingjing,Ma Yan'e,Yao Jinjie.ZOOMFFT complex modulation signals in the vehicle engine sound application of spectral estimation[J].Electronic Test,2011(7):5-7. |
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| Authors: | Liu Guopeng Lv Jingjing Ma Yan'e Yao Jinjie |
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| Affiliation: | (Institute of Signal Capturing & Processing Technology,North University of China,Taiyuan,030051,China) |
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| Abstract: | Aiming at the problem of low resolution in studies of traditional method in vehicle engine acoustic signal spectrum .A algorithm based on complex modulation ZOOMFFT is proposed in vehicle engine sound study.The algrithm based on complex modulation ZOOMFFT can amplify the signal spectrum of local, greatly improve the speed of operation refinement ratio and spectral resolution to improve the signal,and compared with the traditional FFT spectral estimation algorithm and maximum entropy algorithm.Using MATLAB s... |
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| Keywords: | Acoustic signal spectrum ZOOMFFT Complex Modulation |
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