Fundamentals of Signal Processing for Sound and Vibration Engineers (eBook)

Joseph (Joe) Hammond graduated in Aeronautical Engineering in 1966 at the University of Southampton. He completed his PhD in the Institute of Sound and Vibration Research (ISVR) in 1972 whilst a lecturer in the Mathematics Department at Portsmouth Polytechnic. He returned to Southampton in 1978 as a lecturer in the ISVR, and was later Senior lecturer, Professor, Deputy Director and then Director of the ISVR from 1992-2001. In 2001 he became Dean of the Faculty of Engineering and Applied Science, and in 2003 Dean of the Faculty of Engineering, Science and Mathematics. he retired in July 2007 and is an Emeritus Professor at Southampton. Kihong Shin graduated in Precision Mechanical Engineering from Hanyang University, Korea in 1989. After spending several years as an electric motor design and NVH engineer in Samsung Electro-Mechanics Co., he started an MSc at Cranfield University in 1992, on the design of rotating machines with reference to noise and vibration. Following this, he joined the ISR and completed his PhD on nonlinear vibration and signal processing in 1996. In 2000, he moved back to Korea as a contract Professor of Hanyang University. In Mar. 2002, he joined Andong National University as an Assistant Professor, and is currently an Associate Professor.

Preface.

1. Introduction to Signal Processing.

1.1 Descriptions of Physical Data (Signals).

1.2 Classification of Data.

PART I: DETERMINISTIC SIGNALS.

2. Classification of Deterministic Data.

2.1 Periodic Signals.

2.2 Almost Periodic Signals.

2.3 Transient Signals.

2.4 Brief Summary and Concluding Remarks.

2.5 MATLAB Examples.

3. Fourier Series.

3.1 Periodic Signals and Fourier Series.

3.2 The Delta Function.

3.3 Fourier Series and the Delta Function.

3.4 The Complex Form of the Fourier Series.

3.5 Spectra.

3.6 Some Computational Considerations.

3.7 Brief Summary.

3.8 MATLAB Examples.

4. Fourier Integrals (Fourier Transform) and Continuous-TimeLinear Systems.

4.1 The Fourier Integral.

4.2 Energy Spectra.

4.3 Some Examples of Fourier Transforms.

4.4 Properties of Fourier Transforms.

4.5 The Importance of Phase.

4.6 Echoes.

4.7 Continuous-Time Linear Time-Invariant Systems andConvolution.

4.8 Group Delay (Dispersion).

4.9 Minimum and Non-Minimum Phase Systems.

4.10 The Hilbert Transform.

4.11 The Effect of Data Truncation (Windowing).

4.12 Brief Summary.

4.13 MATLAB Examples.

5. Time Sampling and Aliasing.

5.1 The Fourier Transform of An Ideal Sampled Signal.

5.2 Aliasing and Anti-Aliasing Filters.

5.3 Analogue-to-Digital Conversion and Dynamic Range.

5.4 Some Other Considerations in Signal Acquisition.

5.5 Shannon's Sampling Theorem (SignalReconstruction).

5.6 Brief Summary.

5.7 MATLAB Examples.

6. The Discrete Fourier Transform.

6.1 Sequences and Linear Filters.

6.2 Frequency Domain Representation of Discrete Systems andSignals.

6.3 The Discrete Fourier Transform.

6.4 Properties of the DFT.

6.5 Convolution of Periodic Sequences.

6.6 The Fast Fourier Transform.

6.7 Brief Summary.

6.8 MATLAB Examples.

PART II: INTRODUCTION TO RANDOM PROCESSES.

7. Random Processes.

7.1 Basic Probability Theory.

7.2 Random Variables and Probability Distributions.

7.3 Expectations of Functions of a Random Variable.

7.4 Brief Summary.

7.5 MATLAB Examples.

8. Stochastic Processes; Correlation Functions andSpectra.

8.1 Probability Distribution Associated with a StochasticProcess.

8.2 Moments of a Stochastic Process.

8.3 Stationarity.

8.4 The Second Moments of a Stochastic Process; Covariance.

(Correlation) Functions.

8.5 Ergodicity and Time Averages.

8.6 Examples.

8.7 Spectra.

8.8 Brief Summary.

8.9 MATLAB Examples.

9. Linear System Response to Random Inputs: SystemIdentification.

9.1 Single-Input, Single-Output Systems.

9.2 The Ordinary Coherence Function.

9.3 System Identification.

9.4 Brief Summary.

9.5 MATLAB Examples.

10. Estimation Methods and StatisticalConsiderations.

10.1 Estimator Errors and Accuracy.

10.2 Mean Value and Mean Square Value.

10.3 Correlation and Covariance Functions.

10.4 Power Spectral Density Function.

10.5 Cross-spectral Density Function.

10.6 Coherence Function.

10.7 Frequency Response Function.

10.8 Brief Summary.

10.9 MATLAB Examples.

11. Multiple-Input/Response Systems.

11.1 Description of Multiple-Input, Multiple-Output (MIMO)Systems.

11.2 Residual Random Variables, Partial and Multiple CoherenceFunctions.

11.3 Principal Component Analysis.

Appendices.

References.

Index.