NOC:Noise Management and Control


Lecture 1 - Course Overview


Lecture 2 - Introduction


Lecture 3 - Nature Of Sound


Lecture 4 - Beats


Lecture 5 - The Decibel Scale


Lecture 6 - Key Terms in Acoustics


Lecture 7 - Decibel Scale - Part 1


Lecture 8 - Decibel Scale - Part 2


Lecture 9 - Decibel Scale - Part 3


Lecture 10 - Complex Numbers


Lecture 11 - Complex Time Function


Lecture 12 - Linear Systems


Lecture 13 - Transfer Functions


Lecture 14 - Introduction to One Dimensional Wave Equation


Lecture 15 - The Momentum Equation


Lecture 16 - The Continuity Equation and The Gas Law


Lecture 17 - One Dimensional Wave Equation


Lecture 18 - Solution for One Dimensional Wave Equation


Lecture 19 - Transmission Line Equations


Lecture 20 - One Dimensional Example Problems


Lecture 21 - Impedance


Lecture 22 - Pressure Wave Travels in a Closed Tube


Lecture 23 - Standing Wave Formation in a Closed Tube With Rigid Termination


Lecture 24 - Pressure Wave Travels in an Open Tube


Lecture 25 - 1-D sound wave propagation: Kundt’s tube - I


Lecture 26 - 1-D sound wave propagation: Kundt’s tube - II


Lecture 27 - Radially propagating sound waves in spherical coordinate system - I


Lecture 28 - Radially propagating sound waves in spherical coordinate system - II


Lecture 29 - Complex impedance for radially propagating sound waves in spherical coordinate system


Lecture 30 - Volume velocity - I


Lecture 31 - Interference of 1-D spherically propagating sound waves - I


Lecture 32 - Interference of 1-D spherically propagating sound waves - II


Lecture 33 - Noise sources and introduction to microphones


Lecture 34 - Classification of microphones - I


Lecture 35 - Classification of microphones - II


Lecture 36 - Classification of microphones - III


Lecture 37 - Microphone Parameters


Lecture 38 - Understanding microphone specifications


Lecture 39 - Noise Source: Terminology


Lecture 40 - Noise Source: Sound Attenuation


Lecture 41 - Noise Source: Sound Pressure Level due to a noise source located outdoors


Lecture 42 - Noise Source: Role of reflecting surfaces


Lecture 43 - Noise Source: Sound Pressure Level due to a noise source located indoors - Part I


Lecture 44 - Noise Source: Sound Pressure Level due to a noise source located indoors - Part II


Lecture 45 - Measuring Sound Power Level - Understanding standard octave bands


Lecture 46 - Measuring Sound Power Level - Fan noise - Part I


Lecture 47 - Measuring Sound Power Level - Fan noise - Part II


Lecture 48 - Measuring Sound Power Level - Fan noise - Part III


Lecture 49 - Weighting


Lecture 50 - Noise coming from Motors


Lecture 51 - Noise coming from Motors and Pumps


Lecture 52 - Noise coming from Pump and Motor Working Simultaneously


Lecture 53 - Noise coming from Compressors


Lecture 54 - Example problems regarding Noise coming from Compressor


Lecture 55 - Noise Spread Mechanisms


Lecture 56 - Reverberation time


Lecture 57 - Reverberation time example problem


Lecture 58 - Noise from Adjacent Room


Lecture 59 - Acoustic Enclosures


Lecture 60 - Acoustic Enclosures - Example Problems


Lecture 61 - Large acoustical enclosures - I


Lecture 62 - Large acoustical enclosures - II


Lecture 63 - Acoustic barriers - I


Lecture 64 - Acoustic barriers - II


Lecture 65 - Acoustic barriers - III


Lecture 66 - Helmholtz resonator - I


Lecture 67 - Silencers


Lecture 68 - Side Branched Mufflers - I


Lecture 69 - Side Branched Mufflers - II


Lecture 70 - Side Branched Mufflers - III


Lecture 71 - Expansion Chamber Muffler


Lecture 72 - Single Expansion Chamber Muffler