# Fundamentals of Acoustics

- Institution: IIT Kanpur
- Department: Mechanical Engineering
- Teacher: Prof. Nachiketa Tiwari
- Level: Undergraduate
- Language: English
- Subjects: Engineering
- Source: [NPTEL](https://nptel.ac.in/courses/112104212)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/112104212)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

## Lectures

1. [Lesson 1: Course Overview](https://invisiblenetwork.ai/learn/nptel/112104212/2967cac840bb) (Video)
2. [Lesson 2: Introduction](https://invisiblenetwork.ai/learn/nptel/112104212/2d4b652cddc7) (Video)
3. [Lesson 3: Nature Of Sound](https://invisiblenetwork.ai/learn/nptel/112104212/91e5ff8f3929) (Video)
4. [Lecture 4: The Decibel scale](https://invisiblenetwork.ai/learn/nptel/112104212/543b3bdc6fc9) (Video)
5. [Lesson 5: Key Terms In Acoustics](https://invisiblenetwork.ai/learn/nptel/112104212/470b122c31bb) (Video)
6. [Lesson 6: Adding Decibels](https://invisiblenetwork.ai/learn/nptel/112104212/5ff570afc42d) (Video)
7. [Lesson 1: Important Mathematical Concepts-Complex Algebra](https://invisiblenetwork.ai/learn/nptel/112104212/6e35dc9afe0c) (Video)
8. [Lesson 2: Important Mathematical Concepts-Complex Time Signals](https://invisiblenetwork.ai/learn/nptel/112104212/3fb1a027295c) (Video)
9. [Lesson 3: Important Mathematical Concepts-Transfer Function](https://invisiblenetwork.ai/learn/nptel/112104212/187645c0d364) (Video)
10. [Lesson 4: Important Mathematical Concepts-Pole Zero Plot](https://invisiblenetwork.ai/learn/nptel/112104212/16023e823fd3) (Video)
11. [Lesson 5: Important Mathematical Concepts - Bode Plot For Simple Pole](https://invisiblenetwork.ai/learn/nptel/112104212/700c6191cdd7) (Video)
12. [Lesson 6: Important Mathematical Concepts - Bode Plot For Simple Zero](https://invisiblenetwork.ai/learn/nptel/112104212/a619ff826064) (Video)
13. [Lesson 1: Bode Plots (Magnitude) for Complex Transfer Functions](https://invisiblenetwork.ai/learn/nptel/112104212/ec4e9b5e7325) (Video)
14. [Lesson 2: Momentum Equation for 1-D Sound Propagation](https://invisiblenetwork.ai/learn/nptel/112104212/9f1750d26f78) (Video)
15. [Lesson 3: Continuity Equation for 1-D Sound Propagation](https://invisiblenetwork.ai/learn/nptel/112104212/a6be9672287f) (Video)
16. [Lesson 4: Gas Law for 1-D Sound Propagation](https://invisiblenetwork.ai/learn/nptel/112104212/39960a386205) (Video)
17. [Lesson 5: 1-D Wave Equation](https://invisiblenetwork.ai/learn/nptel/112104212/5f14fb3a8855) (Video)
18. [Lesson 6: Solution for 1-D Wave Equation](https://invisiblenetwork.ai/learn/nptel/112104212/cddc5ee50342) (Video)
19. [Lesson 1: Waveguide](https://invisiblenetwork.ai/learn/nptel/112104212/1aa6184a23ec) (Video)
20. [Lesson 2: Transmission Line Equations -Part I](https://invisiblenetwork.ai/learn/nptel/112104212/1d6c05f03f4e) (Video)
21. [Lesson 3: Transmission Line Equations - Part II](https://invisiblenetwork.ai/learn/nptel/112104212/8b4f6e5437da) (Video)
22. [Lesson 4: Transmission Line Equations - Part III](https://invisiblenetwork.ai/learn/nptel/112104212/20b611a41126) (Video)
23. [Lesson 5: Transmission Line Equations - Part IV](https://invisiblenetwork.ai/learn/nptel/112104212/f1a3e2e199f6) (Video)
24. [Lesson 6: Transmission Line Equations - Part V](https://invisiblenetwork.ai/learn/nptel/112104212/6cfed9eb6d92) (Video)
25. [Lesson 1: Instantaneous Power](https://invisiblenetwork.ai/learn/nptel/112104212/6612b55a273f) (Video)
26. [Lesson 2: Instantaneous Power in a L-R Circuit](https://invisiblenetwork.ai/learn/nptel/112104212/0c0dbfc9c98f) (Video)
27. [Lesson 3: Power Factor, and Acoustic Power](https://invisiblenetwork.ai/learn/nptel/112104212/c7d700df12e2) (Video)
28. [Lesson 4: Power Flow into an Infinitely Long Tube](https://invisiblenetwork.ai/learn/nptel/112104212/5a4b86194abd) (Video)
29. [Lesson 5: Point Sources of Sound](https://invisiblenetwork.ai/learn/nptel/112104212/d809a44cd3d8) (Video)
30. [Lesson 6: Relations for Outward Travelling Spherical Acoustic Wave](https://invisiblenetwork.ai/learn/nptel/112104212/5fdc19d1a9ac) (Video)
31. [Lesson 1: Specific Acoustic Impedance for a Closed Tube](https://invisiblenetwork.ai/learn/nptel/112104212/82495e031fed) (Video)
32. [Lesson 2: Specific Acoustic Impedance for an Open Tube and an Infinitely Long Tube](https://invisiblenetwork.ai/learn/nptel/112104212/966839bf9ee9) (Video)
33. [Lesson 3: Specific Acoustic Impedance for a Tube with Imperfect Termination](https://invisiblenetwork.ai/learn/nptel/112104212/86dfdd783858) (Video)
34. [Lesson 4: Kundt’s Tube](https://invisiblenetwork.ai/learn/nptel/112104212/87c09206ec78) (Video)
35. [Lesson 5: Volume Velocity](https://invisiblenetwork.ai/learn/nptel/112104212/54a798d46051) (Video)
36. [Lesson 6: Comparison of Impedances for a Radially Propagating Wave and a Planar Wave](https://invisiblenetwork.ai/learn/nptel/112104212/f3cb17c2af99) (Video)
37. [Lesson 1: Interference of sound sources- part I](https://invisiblenetwork.ai/learn/nptel/112104212/dc7efe8fbf6b) (Video)
38. [Lesson 2: Interference of sound sources- part II](https://invisiblenetwork.ai/learn/nptel/112104212/4aceab343e86) (Video)
39. [Lesson 3: Interference of sound sources- part III](https://invisiblenetwork.ai/learn/nptel/112104212/3654987ac6dc) (Video)
40. [Lesson 4: Interference of sound sources- part IV](https://invisiblenetwork.ai/learn/nptel/112104212/1117a49a7d84) (Video)
41. [Lesson 5: Directivity](https://invisiblenetwork.ai/learn/nptel/112104212/1b2d461a328b) (Video)
42. [Lesson 6: Complex power, pressure and velocity for a spherical source](https://invisiblenetwork.ai/learn/nptel/112104212/8d2e9f97fa8b) (Video)
43. [Lesson 1: Noise reduction - Mass Attenuation Method](https://invisiblenetwork.ai/learn/nptel/112104212/3099cf3485f7) (Video)
44. [Lesson 2: Noise Reduction - Pressure Ratio](https://invisiblenetwork.ai/learn/nptel/112104212/b2335fd6e7c9) (Video)
45. [Lesson 3: Noise Reduction - Velocity of Wall](https://invisiblenetwork.ai/learn/nptel/112104212/2d6337b16bb3) (Video)
46. [Lesson 4: 3 Media Problem - Introduction](https://invisiblenetwork.ai/learn/nptel/112104212/2d4f8880dad7) (Video)
47. [Lesson 5: 3 Media Problem - Apply Boundary Conditions](https://invisiblenetwork.ai/learn/nptel/112104212/1068d2fbbcf4) (Video)
48. [Lesson 6: 3 Media Problem - Special cases](https://invisiblenetwork.ai/learn/nptel/112104212/eed4f8cdb432) (Video)
49. [Lesson 1:Mufflers](https://invisiblenetwork.ai/learn/nptel/112104212/8ec95932a210) (Video)
50. [Lesson 2:Designing of Reactive Mufflers](https://invisiblenetwork.ai/learn/nptel/112104212/5f788da95817) (Video)
51. [Lesson 3:Designing of Dissipative Mufflers](https://invisiblenetwork.ai/learn/nptel/112104212/c2f86d5a2b72) (Video)
52. [Lesson 4:Time and Frequency Domain Representation of a Signal](https://invisiblenetwork.ai/learn/nptel/112104212/5784a80907d0) (Video)
53. [Lesson 5:Fourier Series](https://invisiblenetwork.ai/learn/nptel/112104212/f4c8d847a5e7) (Video)
54. [Lesson 6:Fourier Series](https://invisiblenetwork.ai/learn/nptel/112104212/f43120153061) (Video)
55. [Lesson 1:Fourier Transform](https://invisiblenetwork.ai/learn/nptel/112104212/df29af4cdf2c) (Video)
56. [Lesson 2:Fourier Transform](https://invisiblenetwork.ai/learn/nptel/112104212/47236586cc9d) (Video)
57. [Lesson 3:Fourier Transform](https://invisiblenetwork.ai/learn/nptel/112104212/1ab55c91c5f1) (Video)
58. [Lesson 4:Discrete Fourier Transform (DFT)](https://invisiblenetwork.ai/learn/nptel/112104212/362e85fba10e) (Video)
59. [Lesson 5:Discrete Fourier Transform (DFT)](https://invisiblenetwork.ai/learn/nptel/112104212/5074dc7f87dd) (Video)
60. [Lesson 6:Discrete Fourier Transform (DFT)](https://invisiblenetwork.ai/learn/nptel/112104212/481856f55698) (Video)
61. [Lesson 1: Measuring Sound Signals](https://invisiblenetwork.ai/learn/nptel/112104212/c322589c3ae4) (Video)
62. [Lesson 2:Microphones](https://invisiblenetwork.ai/learn/nptel/112104212/d3d1176a03e6) (Video)
63. [Lesson 3:Microphones](https://invisiblenetwork.ai/learn/nptel/112104212/34685c18f1ff) (Video)
64. [Lesson 4:Weighting](https://invisiblenetwork.ai/learn/nptel/112104212/6ba55af77326) (Video)
65. [Lesson 5: Loudness](https://invisiblenetwork.ai/learn/nptel/112104212/f3748916b9a0) (Video)
66. [Lesson 6:Loudness](https://invisiblenetwork.ai/learn/nptel/112104212/e546a1ddc5bd) (Video)
67. [Lesson 1: Octave Band Analysis - Part I](https://invisiblenetwork.ai/learn/nptel/112104212/637aa8c89f7b) (Video)
68. [Lesson 2: Octave Band Analysis – Part II](https://invisiblenetwork.ai/learn/nptel/112104212/f779548d6ebd) (Video)
69. [Lesson 3: Octave Band Analysis – Part III](https://invisiblenetwork.ai/learn/nptel/112104212/7dd0ed3f298d) (Video)
70. [Lesson 4: Reverberation Time](https://invisiblenetwork.ai/learn/nptel/112104212/ad4dad5c8512) (Video)
71. [Lesson 5: Calculation of Reverberation Time and Sound Transmission Class (STC)](https://invisiblenetwork.ai/learn/nptel/112104212/f17091fd6b99) (Video)
72. [Lesson 6: Noise Reduction Coefficient (NRC)](https://invisiblenetwork.ai/learn/nptel/112104212/995f341450b0) (Video)