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He holds twenty seven patents and has presented or published well over thirty papers on electro-acoustic transducers. He has also taught courses in acoustics at Northeastern University, Naval Air Development Center, Raytheon Company, Harris Transducer Products and Hazeltine Corporation (now Ultra Ocean Systems, Inc.), Massa Products Corporation, Etrema Products, Plessey Australia, and Lund Institute of Technology, Sweden. He has worked for and consulted to a number of underwater acoustics firms as well as Parke Mathematical Laboratories and the U. and has had over forty years of both practical and theoretical experience in the design and analysis of underwater sound transducers and arrays. Butler is Chief Scientist at Image Acoustics, Inc. 12.4 Nonlinear Effects on the Electromechanical Coupling Coefficient.- Appendix.- Glossary of Terms.- Solutions for Odd-Numbered Exercises.-Index.ĭr.
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12.3 Nonlinear Analysis of Distributed-Parameter Transducers. 12.1 Nonlinear Mechanisms in Lumped Parameter Transducers. 11.4 Numerical Models for Acoustic Calculations.- Chapter 12: Nonlinear Mechanisms and Their Effects. 11.3 Scattering and the Diffraction Constant. 11.2 Green's Theorem and Acoustic Reciprocity. 10.5 Dipole Coupling to a Parasitic Monopole.- Chapter 11: Mathematical Models for Acoustic Radiation. 10.2 Far Field Acoustic Radiation 10.3 Near-Field Acoustic Radiation. 9.8 Calibrated reference Transducers.- Chapter 10: Acoustic Radiation from Transducers. 9.3 Measurement of Transducer Efficiency. 9.1 Electrical Measurement of Transducers in Air. 8.7 Array Absorption and Transparency.- Chapter 9: Transducer Evaluation and Measurement. 8.3 Sources and Properties of Noise in Arrays. 8.1 Hydrophone Array Directional Response. 7.7 The Nonlinear Parametric Array.Doubly Steered Arrays.- Chapter 8: Hydrophone Arrays. 7.3 Calculation of Mutual Radiation Impedance. 7.2 Mutual Radiation Impedance and the Array Equations. 6.7 Hydrophone Thermal Noise.- Chapter 7: Projector Arrays. 6.2 Cylindrical and Spherical Hydrophones. 5.8 Low Profile Transducers.- Chapter 6: Transducers as Hydrophones. 4.5 Parameter Based Figure of Merit (FOM).- Chapter 5: Transducers as Projectors. 4.4 Electromechanical Coupling Coefficient. 3.4 Finite Element Models.- Chapter 4: Transducer Characteristics. 3.1 Lumped Parameter Models and Equivalent Circuits. 2.10 Extended Equivalent Circuits.- Chapter 3: Transducer Models. 1.5 Transducer Arrays.- Chapter 2: Electroacoustic Transduction. 1.3 General Description of Linear Electroacoustic Transduction. 1.1 Brief History of Underwater Sound Transducers.