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Course11210421272 lectures

Fundamentals of Acoustics

Prof. Nachiketa Tiwari · IIT Kanpur

Start with lecture 1 At NPTEL

Lectures

Week 01: Intro and terminology

  1. Lesson 1: Course Overview Video
  2. Lesson 2: Introduction Video
  3. Lesson 3: Nature Of Sound Video
  4. Lecture 4: The Decibel scale Video
  5. Lesson 5: Key Terms In Acoustics Video
  6. Lesson 6: Adding Decibels Video

Week 02: Concept Review

  1. Lesson 1: Important Mathematical Concepts-Complex Algebra Video
  2. Lesson 2: Important Mathematical Concepts-Complex Time Signals Video
  3. Lesson 3: Important Mathematical Concepts-Transfer Function Video
  4. Lesson 4: Important Mathematical Concepts-Pole Zero Plot Video
  5. Lesson 5: Important Mathematical Concepts - Bode Plot For Simple Pole Video
  6. Lesson 6: Important Mathematical Concepts - Bode Plot For Simple Zero Video

Week 03: Wave equation

  1. Lesson 1: Bode Plots (Magnitude) for Complex Transfer Functions Video
  2. Lesson 2: Momentum Equation for 1-D Sound Propagation Video
  3. Lesson 3: Continuity Equation for 1-D Sound Propagation Video
  4. Lesson 4: Gas Law for 1-D Sound Propagation Video
  5. Lesson 5: 1-D Wave Equation Video
  6. Lesson 6: Solution for 1-D Wave Equation Video

Week 04: Transmission line equations

  1. Lesson 1: Waveguide Video
  2. Lesson 2: Transmission Line Equations -Part I Video
  3. Lesson 3: Transmission Line Equations - Part II Video
  4. Lesson 4: Transmission Line Equations - Part III Video
  5. Lesson 5: Transmission Line Equations - Part IV Video
  6. Lesson 6: Transmission Line Equations - Part V Video

Week 05: 1-D Waves

  1. Lesson 1: Instantaneous Power Video
  2. Lesson 2: Instantaneous Power in a L-R Circuit Video
  3. Lesson 3: Power Factor, and Acoustic Power Video
  4. Lesson 4: Power Flow into an Infinitely Long Tube Video
  5. Lesson 5: Point Sources of Sound Video
  6. Lesson 6: Relations for Outward Travelling Spherical Acoustic Wave Video

Week 06: Power and spherical waves

  1. Lesson 1: Specific Acoustic Impedance for a Closed Tube Video
  2. Lesson 2: Specific Acoustic Impedance for an Open Tube and an Infinitely Long Tube Video
  3. Lesson 3: Specific Acoustic Impedance for a Tube with Imperfect Termination Video
  4. Lesson 4: Kundt’s Tube Video
  5. Lesson 5: Volume Velocity Video
  6. Lesson 6: Comparison of Impedances for a Radially Propagating Wave and a Planar Wave Video

Week 07: Spherical waves and interference

  1. Lesson 1: Interference of sound sources- part I Video
  2. Lesson 2: Interference of sound sources- part II Video
  3. Lesson 3: Interference of sound sources- part III Video
  4. Lesson 4: Interference of sound sources- part IV Video
  5. Lesson 5: Directivity Video
  6. Lesson 6: Complex power, pressure and velocity for a spherical source Video

Week 08: Directivity and mufflers

  1. Lesson 1: Noise reduction - Mass Attenuation Method Video
  2. Lesson 2: Noise Reduction - Pressure Ratio Video
  3. Lesson 3: Noise Reduction - Velocity of Wall Video
  4. Lesson 4: 3 Media Problem - Introduction Video
  5. Lesson 5: 3 Media Problem - Apply Boundary Conditions Video
  6. Lesson 6: 3 Media Problem - Special cases Video

Week 09: Sound in rooms

  1. Lesson 1:Mufflers Video
  2. Lesson 2:Designing of Reactive Mufflers Video
  3. Lesson 3:Designing of Dissipative Mufflers Video
  4. Lesson 4:Time and Frequency Domain Representation of a Signal Video
  5. Lesson 5:Fourier Series Video
  6. Lesson 6:Fourier Series Video

Week 10: Reverb time and FFT

  1. Lesson 1:Fourier Transform Video
  2. Lesson 2:Fourier Transform Video
  3. Lesson 3:Fourier Transform Video
  4. Lesson 4:Discrete Fourier Transform (DFT) Video
  5. Lesson 5:Discrete Fourier Transform (DFT) Video
  6. Lesson 6:Discrete Fourier Transform (DFT) Video

Week 11: Weighting and loudness

  1. Lesson 1: Measuring Sound Signals Video
  2. Lesson 2:Microphones Video
  3. Lesson 3:Microphones Video
  4. Lesson 4:Weighting Video
  5. Lesson 5: Loudness Video
  6. Lesson 6:Loudness Video

Week 12: Miscellaneous topics and closure

  1. Lesson 1: Octave Band Analysis - Part I Video
  2. Lesson 2: Octave Band Analysis – Part II Video
  3. Lesson 3: Octave Band Analysis – Part III Video
  4. Lesson 4: Reverberation Time Video
  5. Lesson 5: Calculation of Reverberation Time and Sound Transmission Class (STC) Video
  6. Lesson 6: Noise Reduction Coefficient (NRC) Video

Syllabus and materials

At NPTEL, as the course publishes them.

Credits and licence

Institution
IIT Kanpur
Department
Mechanical Engineering
Teacher
Prof. Nachiketa Tiwari
Level
Undergraduate
Language
English
Subjects
Engineering
Source
NPTEL
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
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