Resonance identification in loudspeaker driver units: A comparison of techniques

S.J. Loutridis

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Resonance identification in loudspeaker driver units: A comparison of techniques

机译：扬声器驱动器单元中的共振识别：技术比较

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摘要

A number of techniques with the scope of identifying loudspeaker cone resonances have been examined. Namely, the waterfall plot, the wavelet transform and the empirical mode decomposition scheme were compared on the basis of time-frequency resolution and damping estimation. The commonly used waterfall plot is only acceptable at the upper range of the acoustic spectrum. The wavelet transform is especially well suited for the analysis of transient signals from loudspeakers and is a significant improvement over the waterfall method. The newly developed EMD scheme has the highest potential in separating the modal components. By application of the EMD both instantaneous amplitude and frequency can be accurately determined.

机译：已经研究了范围广泛的确定扬声器锥体共振的技术。即，在时频分辨率和阻尼估计的基础上，比较了瀑布图，小波变换和经验模态分解方案。常用的瀑布图仅在声谱的较高范围内可接受。小波变换特别适合于分析来自扬声器的瞬态信号，并且是对瀑布法的重大改进。新开发的EMD方案在分离模态分量方面具有最大的潜力。通过使用EMD，可以准确确定瞬时幅度和频率。

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来源
《Applied Acoustics》 |2005年第12期|p.1399-1426|共28页
作者
S.J. Loutridis;
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作者单位

Technological Educational Institute of Larissa, School of Technological Applications, Department of Electrical Engineering, GR 41-110 Larissa, Greece;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类声学;
关键词
loudspeaker resonances; time-frequency analysis;

机译：扬声器共振;时频分析;

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Resonance identification in loudspeaker driver units: A comparison of techniques

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