Source Identification of Non-Stationary Sound.Vibration Signals Using Multi-Dimensional Spectral Analysis Method

Sim, Hyoun-Jin; Lee, Hae-Jin; Lee, You-Yub; Lee, Jinkee; Oh, Jae‐Eung

doi:10.3795/ksme-a.2006.30.9.1154

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A Method for Identifying Radio Frequency Interference Sources Based on Near-field Arrays

2024

2024 6th International Conference on Communications, Information System and Computer Engineering (CISCE)

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A Method for Identifying Radio Frequency Interference Sources Based on Near-field Arrays

2024

2024 6th International Conference on Communications, Information System and Computer Engineering (CISCE)

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Transfer Path Analysis of Output Noise Using Multi-dimensional Spectral Analysis Method for Vacuum Cleaner

Jeong¹,

Lee²,

Chung³

et al. 2010

Transactions of the Korean Society for Noise and Vibration Engi

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Noise reduction of vacuum cleaner is important, according as get into standard that estimate quality of product. To reduce noise of vacuum cleaner, we need analysis of correct noise source and contribution grasping about Identified noise sources' output noise. Because noise sources' correlation exists in vacuum cleaner that is small and complicated system, analysis is not easy. In this case, we need to apply Multi-dimensional spectral analysis(MDSA) method that can remove correlation between noise sources and grasp pure contribution degree of noise sources. In this study, we take transfer path analysis between output noise and noise that measured in inside/outside of vacuum cleaner.*

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Noise-source Identification of Evaporator Using Partial Coherence Function

Choi¹,

Jeong

Han³

et al. 2009

Transactions of the Korean Society for Noise and Vibration Engi

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Frequency analysis is one of the most useful way to analyze response signal for the purpose of grasping the dynamic characteristics of system through Fourier transformation. Although it is very effective way for frequency analysis, it is hard to analyze out a specific sound or vibration component which is correlated with others. In this thesis, source contribution analysis tool for NI-PXI equipment is developed with LabVIEW using coherences of MISO(multiple-input single-output) model. For the purpose of examining propriety of developed tool, simulation is performed with several correlated signals that have different frequency range. After checking the OCF(ordinary coherence function) and PCF(partial coherence function) of the each signal for concerned frequency domain, an experiment is conducted on an evaporator that cause the principal noise of a refrigerator. This developed tool will be expected to build up more convenient and serviceable measurement system.

show abstract

Source Identification of Non-Stationary Sound.Vibration Signals Using Multi-Dimensional Spectral Analysis Method

Cited by 3 publications

References 1 publication

A Method for Identifying Radio Frequency Interference Sources Based on Near-field Arrays

A Method for Identifying Radio Frequency Interference Sources Based on Near-field Arrays

Transfer Path Analysis of Output Noise Using Multi-dimensional Spectral Analysis Method for Vacuum Cleaner

Noise-source Identification of Evaporator Using Partial Coherence Function

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