The notes contained in this page correspond to the delivery of ME413/513 during Spring Semester 2006. The content of ME413/513 changes slightly from semester to semester. Lecture notes from previous semesters [ Spring 02 | Spring 04 ]. An advanced topics version of ME413/513 was offered Spring 05, the lecture notes for this course can be found here.

Introduction (HW#1,2 Coverage)
• Session 1: Introduction, Complex Numbers
• Session 2: Using Complex Numbers to Solve Differential Equations
• Session 3: Electric Circuits, Electrical Impedance and Electromechanical Analogies
• Session 4: Power Dissipation in Mechanical and Electrical Circuits
• Session 5: Frequency Response of a Second Order Oscillator
• Session 6: Electromagnetic Loudspeaker Driver, Specifications for 4.5" Full Range Driver

  Fundamentals of Acoustics in Fluids (HW#3 Coverage)

• Session 7: Acoustics Variables
• Session 8: Derivation of the Wave Equation
• Session 9: D'Almberts Plane Wave Solution
• Session 10: Harmonic Plane Waves, Wavelength
• Session 11: Acoustic Particle Velocity, Displacement, and Acoustic Density
• Session 12: Decibel Scales, Specific Acoustic Impedance and Acoustic Intensity
• Session 13: Acoustic Power, Spherical Waves
• Session 14: Spherical Waves- Acoustic Pressure, Velocity, Displacement, Intensity
• Session 18: Review for Exam I

  Reflection and Transmission at an Interface (HW#5 Coverage)

• Session 15:Reflection/Transmission from a Fluid Boundary at Normal Incidence
• Session 16: Reflection/Transmission from a Fluid Layer at Normal Incidence
• Session 17: Reflection/Transmission from a Fluid Layer, Design Strategies, Transmission at Normal Incidence

  Sources of Sound (HW#6 Coverage)

• Session 19: Monopoles and Source Strength
• Session 20: Simple Sources and Dipoles
• Session 21: Method of Images
• Session 22: Plane Piston, Near and Far Field
• Session 23: Plane Piston, Far-Field Directivity, BeamPatternV11.mcd, BeamPatternV11.pdf.
• Session 24: Plane Piston, Radiation Impedance.
• Session 25: Plane Piston, Example Problems, Low- and High-Frequency Asymptotes, RadImpFunctions.pdf, RadImpFunctionsV2001.mcd.
• Session 29: Review for Exam II

  Pipes and Helmholtz Resonators (HW#7, Project Coverage)

• Session 26: Rigidly Terminated Pipe, PipesAndMufflers.pdf, PipesAndMufflersV2001.mcd.
• Session 27: Acoustic Impedance, Area Change and Boundary Conditions.
• Session 28: Impedance Transfer Formula, Low-Pass Acoustic Filter.
• Session 30: Radiation from an Open Pipe, Low-Pass with Open Pipe Termination Impedance.
• Session 31: Branch Impedance, Notch Filter.
• Session 32: Helmholtz Resonators.
• Session 33: Filter Applications of Helmholtz Resonators.
• Session 34: Applications of Helmholtz Resonators, Sealed Cabinet Design. Note: In slide 34/6, the jw numerator in the acoustic pressure should be (jw)^2. drivers.xls.
• Session 35: Applications of Helmholtz Resonators, Vented Cabinet Design, Notes on Design of Vented Cabinets.
• Session 36: Vented Cabinet Design Continued.
• Session 37: Review for Exam III

  Sound Measurement and Weighting Scales (HW#4 Coverage)

• Session 38: Physics of Sound Measurement, Technology, Cal Chart for BK4133 Mic, Cal Chart for BK4134 Mic, Cal Chart for BK4138 Mic, Cal Chart for ACO7016 Mic, Free-Field Correction Factors.
• Session 39: ME513 Project Supplement- Computation of Dipole Moment,
• Session 39a: Microphone Calculation Examples, Free-Field Correction Factor, Microphone Calculation Examples.
• Session 40: Weighting Scales.