Acoustics
Acoustics. Instructor: Prof. Nachiketa Tiwari, Department of Mechanical Engineering, IIT Kanpur. This course discusses topics in acoustics: acoustics fundamentals, terminology, 1-D wave equation in Cartesian coordinates and in spherical coordinates, transmission line equations, electromechanical transduction and mechano-acoustic transduction using lumped parameter approach, modeling of complex electro-magnetic-mechanical-acoustic systems, sound radiation, propagation and attenuation of sound, waveguides, and the interplay between vibrations and acoustics.
(from nptel.ac.in)
| Concept Review |
| Lecture 01 - Introduction, Sound Wave vs Vibration, Different Types of Waves |
| Lecture 02 - Review: Linearity, Complex Numbers and Spring Mass System |
| Lecture 03 - Review: Poles and Zeros, Phase and Magnitude Plots, Transfer Functions, Bode Plots |
| Lecture 04 - Review: Transfer Function and Bode Plots |
| 1-D Wave Equation |
| Lecture 05 - 1-D Wave Equation and its Solution |
| Lecture 06 - Solution for 1-D Wave Equation |
| Lecture 07 - Waveguides, Transmission Line Equations and Standing Waves |
| Lecture 08 - Waveguides, Transmission Line Equations and Standing Waves (cont.) |
| Lecture 09 - Examples of 1-D Waves in Tubes, Short tubes, Kundt's Tube |
| Lecture 10 - Thermodynamic Processes during Sound Transmission |
| Lecture 11 - Numerical Examples 1 |
| Sound Transmission |
| Lecture 12 - Sound Transmission through Walls |
| Lecture 13 - Sound Transmission through Walls (cont.) |
| Lecture 14 - Leakage in Walls, Sound Transmission Class Ratings, Octave Bands |
| 1-D Waves |
| Lecture 15 - Instantaneous Power Flow |
| Lecture 16 - Radial Propagation of Sound, Monopoles, and Dipoles |
| Lecture 17 - Radial Propagation of Sound, Monopoles, and Dipoles (cont.) |
| Lecture 18 - Radial Propagation of Sound, Monopoles, and Dipoles (cont.) |
| Lecture 19 - Numerical Examples 2 |
| Lecture 20 - Numerical Examples 3 |
| Directivity |
| Lecture 21 - Directivity: Expression of Pressure |
| Lecture 22 - Directivity of Different Sound Sources |
| Lecture 23 - Directivity Pattern associated with Sound Sources |
| Lecture 24 - Directivity Pattern associated with the Doublet |
| Lumped Parameter Modeling of Transducers |
| Lecture 25 - Generalized Elements |
| Lecture 26 - Examples of Electromechanical Systems |
| Lecture 27 - Transformers, Radiation Impedance, and Helmholtz Resonator |
| Lecture 28 - Radiation Impedance |
| Lecture 29 - Radiation Impedance (cont.) |
| Lecture 30 - Models of Electromechanical Acoustics System |
| Lecture 31 - Solution of Loudspeaker Model |
| Lecture 32 - Microphones |
| Lecture 33 - Vibrometer, Seismometer, Accelerometer, Shaker Table |
| Sound in Public Spaces and Noise Management |
| Lecture 34 - Sound Propagation in Rooms, 1-D Rooms, 2-D Rooms |
| Lecture 35 - Sound in 3D Rooms |
| Lecture 36 - Absorption Coefficient, and Irregular Rooms |
| Lecture 37 - Room Constant, and Sabine's Coefficient |
| Lecture 38 - Design of a muffler |
| Lecture 39 - Noise in Machines, Basics of Noise Management |
| References |
Acoustics
Instructor: Prof. Nachiketa Tiwari, Department of Mechanical Engineering, IIT Kanpur. This course discusses topics in acoustics: acoustics fundamentals, terminology, 1-D wave equation in Cartesian coordinates ...
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