A Study on the Leakage Error in the Spectrum of Acoustic Intensity

スポンサーリンク

概要

• 論文の詳細を見る

• Acoustic intensity is usually estimated from the cross-spectrum of acoustic pressures measured by two adjacent microphones. The cross-spectrum, calculated by the digital Fourier transform technique, has unavoidable leakage error because the signal period does not usually coincide with the record length. Therefore, acoustic intensity, estimated by a conventional FFT analyzer, has distorted values. In our research, the expression of Fourier-transformed data of a harmonic signal with a single frequency was formulated when there was leakage error. A method to eliminate the effect of leakage error from contaminated data was also investigated. Some numerical examples show the validation of the proposed method.

• 一般社団法人日本機械学会の論文
• 2004-01-15

著者

• Jeong Weui

  Department Of Mechanical Engineering Pusan National University

• Yoo Wan

  School of Mechanical Engineering, Pusan National University

• Yoo Wan

  Department Of Mechanical Engineering Pusan National University

• Yoo Wan

  School Of Mechanical Engineering Pusan National University

• Ahn Se

  Department Of Mechanical Engineering Pusan National University

• Seo Young

  Department Of Mechanical Engineering Pusan National University

• Jeong Weui

  Tokyo Institute Of Technology

• JEONG Weui

  School of Mechanical Engineering, Pusan National University

• JEONG Ho

  Structures & Materials Department, KSLV Technology Division, Korea Aerospace Research Institute

• AHN Se

  School of Mechanical Engineering, Pusan National University

• SEO Young

  School of Mechanical Engineering, Pusan National University

• Jeong Ho

  Structures & Materials Department Kslv Technology Division Korea Aerospace Research Institute

関連論文

• Sliding Mode Control of Real-Time PNU Vehicle Driving Simulator and Its Performance Evaluation ( Multibody Dynamics)
• W-1-1-1 Multibody Dynamics Research in Korea
• An Experimental Approach for Structural Dynamic Modification of Fixture in Vibration Test Control
• Stability Analysis of a Pipe Conveying Periodically Pulsating Fluid Using Finite Element Method
• Finite Element Vibration Analysis of Cylindrical Shells Conveying Fluid with Considering Acoustic-Structure Interactions
• Finite Element Analysis of Forced Vibration for a Pipe Conveying Harmonically Pulsating Fluid
• Enhancement of the TFS Method by Removing Bias Errors in FRF
• An Estimation of Error-Free Frequency Response Function from Impact Hammer Testing
• A Study on the Leakage Error in the Spectrum of Acoustic Intensity
• Experimental Identification of Mechanical Structure with Characteristic Matrices : Proposition of Curve Fitting in the Frequency Domain and MCK Identification Using Curve Fitting
• T-4-1-3 Development and Applications of the AutoDyn7 Program
• T-3-2-4 Sliding Mode Control of Real-Time PNU Vehicle Driving Simulator and Its Performance Evaluation
• F-6-4-3 Computer Integrated System for Virtual Design and Dynamic Performance Test of a Hydraulic Excavator

もっと見る 閉じる

スポンサーリンク