The notes contained in this page correspond to the delivery of ME413/513 during Spring Semester 2008. The content of ME413/513 changes slightly from semester to semester. Lecture notes from previous semesters [ Spring 02 | Spring 04 | Spring 06 ]. An advanced topics version of ME413/513 was offered Spring 05.

Introduction (HW#1,2 Coverage)
• Session 1: Introduction, Complex Numbers
• Session 2: Using Complex Numbers to Solve Differential Equations
• Session 3: Analysis of Electric Circuits, Electromechanical Analogies
• Session 4: Power Dissipation, Properties of a 2nd Order Oscillator
• Session 5: Electromagnetic Loudspeaker Drivers, Specifications for 4.5" Full Range Driver

  Fundamentals of Acoustics in Fluids (HW#3 Coverage)

• Session 6: Acoustic Variables, Fluid Conservation Equations
• Session 7: Wave Equation in Fluids, D'Almberts Solution
• Session 8: Harmonic Plane Waves, Wavelength
• Session 9: Complex Exponential Notation, Acoustic Velocity
• Session 10: Acoustic Velocity, Displacement, Density
• Session 11: Decibel Scales, Specific Acoustic Impedance
• Session 12: Acoustic Intensity, Power
• Session 13: Spherical Waves, Acoustic Pressure, Velocity and Displacement
• Session 14: Spherical Waves, Acoustic Intensity, Power; Example Problems
• Session 17: Review for Exam I

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

• Session 15: Example Problems, Reflection/Transmission at a Planar Interface
• Session 16: Reflection/Transmission at a Planar Interface
• Session 18: Reflection/Transmission Through a Planar Layer, Transmission at Normal Incidence

  Sources of Sound (HW#6 Coverage)

• Session 19: Monopoles and Source Strength. In slide 19-5, the formula for time averaged power "PI" should contain a 4*pi*a^2 multiplier. Errata discussed in Session 29 DVD.
• Session 20: Simple Sources and Dipoles
• Session 21: Method of Images
• Session 22: Plane Piston- On Axis Response
• Session 23: Plane Piston- Farfield Response, BeamPatternV11.mcd, BeamPatternV11.pdf.
• Session 24: Plane Piston- Radiation Impedance, RadImpFunctions.pdf, RadImpFunctionsV2001.mcd. In slide 24-3, the displacement x should be the integral of velocity u, not the other way around. Errata discussed in Session 29 DVD.
• Session 25: Plane Piston- Sound Power Output
• Session 29: Review for Exam II

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

• Session 26: Rigidly Terminated and Pressure Release Narrow Pipe
• Session 27: Acoustic Impedance, Area Change
• Session 28: Arbitrary Length Pipes, Impedance Transfer Formula, Low Pass Example Calculation, MathCAD Source for Pipes and Muffler Computations.
• Session 30: Radiation From an Open Pipe, Open Pipe/Low Pass Example Calculations.
• Session 31: Branches, Example Branch Calculations.
• Session 32: Helmholtz Resonators
• Session 33: Helmholtz Resonator Applications- Low Pass and Bandstop Filters
• Session 34: Helmholtz Resonator Applications- Sealed Loudspeaker Cabinet Design
• Session 35: Helmholtz Resonator Applications- Ported Loudspeaker Cabinet Design, Notes on Design of Vented Cabinets
• Session 39: Review for Exam III.

  Sound Measurement and Weighting Scales (HW#4 Coverage)

• Session 36: Physics of Sound Measurement, Microphone Calibration Charts, Cal Chart for BK4133 Mic, Cal Chart for BK4134 Mic, Cal Chart for BK4138 Mic, Cal Chart for ACO7016 Mic.
• Session 37: Free-Field Correction Factor, Weighting Scales, Free-Field Correction Factors, Formula for A-Weight Scale.
• Session 38: Frequency Decomposition with DFT, FrequencyDecomposition. MathCAD and Matlab examples for FFT decomposition of time series data.
• Session 40: Parseval's Theorem, DFT Details
• Session 41: Wide-band Sound Measurement by Spectral Method , WideBandSoundMeasurement.
• Session 42: Review for Final Exam