Learn · NPTEL

Course11210402639 lectures

Acoustics

Prof. Nachiketa Tiwari · IIT Kanpur

Start with lecture 1 At NPTEL

Lectures

Concept Review

  1. Intro, sound wave versus vibration, different types of waves, octave, music scales, sense of SPL Video
  2. Review: Linearity, complex numbers, and spring mass system Video
  3. Review: Poles and zeroes, phase and magnitude plots, transfer functions, Bode plots Video
  4. Review: Transfer functions, and Bode plots Video

Module II: 1-D Wave Equation

  1. 1-D wave equation, and its solution Video
  2. Solution for 1-D wave equation Video
  3. Waveguides, transmission line equations, and standing waves Video
  4. Waveguides,transmission line equations, and standing waves Video
  5. Examples of 1-D waves in tubes, short tubes, Kundt's tube Video
  6. Thermodynamic processes during sound transmission Video
  7. Numerical examples Video

Module III: Sound Transmission

  1. Sound transmission through walls Video
  2. Sound transmission through walls Video
  3. Leakage in walls, STC Ratings, Octave bands Video

Leakage in walls, STC Ratings, Octave bands

  1. Instantaneous power flow Video
  2. Radial propagation of sound, monopoles, and dipoles Video
  3. Radial propagation of sound, monopoles, and dipoles Video
  4. Radial propagation of sound, monopoles, and dipoles Video
  5. Numerical examples Video
  6. Numerical examples Video

Module V: Directivity

  1. Directivity Video
  2. Directivity Video
  3. Directivity Video
  4. Directivity Video

Module VI: Lumped Parameter Modelling of Transducers

  1. Generalized elements Video
  2. Examples of electromechanical systems Video
  3. Transformers, radiation impedance, and Helmholtz resonator Video
  4. Radiation impedance Video
  5. Radiation impedance Video
  6. Models of electro-mechanical-acoustic systems Video
  7. Solution for a loudspeaker model Video
  8. Microphones Video
  9. Vibro-meter, seismometer, accelerometer, shaker table Video

Module VII: Sound in Public Spaces and Noise Management

  1. Sound propagation in rooms, 1-D rooms, 2D rooms Video
  2. Sound in 3-D rooms Video
  3. Absorption coefficient, and irregular rooms Video
  4. Room constant, and Sabine's coefficient Video
  5. Design of a muffler Video
  6. Noise in machines, basics of noise management 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.
Who can watch
NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed