1. Introduction screen

2. Introduction

3. Purpose

4. Assumptions Regarding Students Experience

5. Summary of Course Topics

6. Sound vs Noise

7. Source-Path-Receiver Concept

8. Acoustics

9. Creation of Sound Waves

10. Amplitude vs Time

11. Frequency

12. Pressure Wave Propagation

13. Speed of Sound

14. Amplitude vs Distance

15. Relationships

16. Example

17. Example

18. Sound Pressure

19. Sound Pressure

20. Sound Pressure

21. Sound Pressure

22. Logarithms 1A

23. Sound Pressure Levels and Decibels

24. Sound Pressure Levels and Decibels

25. Sound Pressure Levels and Decibels

26. Addition and Subtraction of Sound Pressure Levels (SPLs)

27. Addition and Subtraction of Sound Pressure Levels (SPLs)

28. Addition and Subtraction of Sound Pressure Levels (SPLs)

29. Examples

30. Addition and Subtraction of Sound Pressure Levels (SPLs)

31. Exercise

32. Addition and Subtraction of Sound Pressure Levels (SPLs)

33. Example

34. Addition of Sound Pressure Levels (SPLs)

35. Addition and Subtraction of Sound Pressure Levels (SPLs)

36. Exercise

37. Exercise

38. Addition and Subtraction of Sound Pressure Levels (SPLs)

39. Example

40. Sound Power

41. Sound Power

42. Sound Power

43. Sound Power

44. Frequency Spectra and Frequency Bands

45. Frequency Spectra and Frequency Bands

46. Frequency Spectra and Frequency Bands

47. Frequency Spectra and Frequency Bands

48. Frequency Spectra and Frequency Bands

49. Frequency Spectra and Frequency Bands

50. Frequency Spectra and Frequency Bands

51. Typical Noise Levels

52. Sound Propagation

53. Geometric Spreading

54. Geometric Spreading

55. Line Source vs Moving Point Source

56. Line Source vs Moving Point Source

57. Line Source vs Moving Point Source

58. Geometric Relationship Between Traffic and Receiver

59. Geometric Relationship Between Traffic and Receiver

60. Line Source Attenuation Rates

61. Line Source Attenuation Rates

62. Summary of Noise Attenuation Rates

63. Example

64. Example

65. Example

66. Example

67. Atmospheric Factors Affecting Noise Propagation

68. Refraction and Wind Gradients

69. Effects of Wind

70. Refraction and Temperature Gradients

71. Temperature Inversion

72. Vegetation/Obstacles/Barriers

73. Human Reaction to Noise

74. Human Reaction to Noise

75. Noise Descriptors

76. Noise Descriptors

77. Noise Descriptors

78. Noise Descriptors

79. Noise Descriptors

80. Noise Descriptors

81. Noise Descriptors

82. Noise Descriptors

83. Noise Descriptors

84. Noise Descriptors

85. Traffic Noise Barriers Fundamentals

86. Noise Path without a Barrier

87. Noise Paths with Barrier

88. Critical Points in Defining a Barrier

89. Importance of Breaking the Line of Sight

90. Barrier Attenuation and Path Length Difference

91. Noise Path with Barrier

92. Hinge Point Barrier

93. Hinge Point Barrier

94. Transmission Loss

95. Transmission Loss

96. Effect of Barrier on Attenuation Over Distance

97. Optimum Barrier Location

98. Pre-Existing Shielding

99. Effect of Partial Barrier

100. Noise Barrier Length

101. Single Barrier Reflections

102. Parallel Barrier Reflections

103. Ratio of Width to Height

104. Degradation of Barrier Attenuation Resulting from Parallel Barriers

105. Concluding Remarks

106. Acknowledgements