Woods Practical guide to noise control

1. FLÄKT WOODS PRACTICAL GUIDE
TO NOISE CONTROL

2. Fläkt Woods Practical Guide
to Noise Control
Ian Sharland, B.Sc.(Eng.), C.Eng., A.F.R.Ae.S.
with a foreword by Peter Lord, B.Sc., M.Sc.Tech., Ph.D.,
F.Inst.P., C.Eng., M.I.E.E., Professor of Acoustics, Salford University
Published by
Fläkt Woods Limited, Colchester, England.

3. First Published May1972
Copyright Ian Sharland 1972
Second Impression 1973
Third Impression 1979
Fourth Impression 1986
Fifth Impression 1988
Sixth Impression 1990
Seventh Impression 1998
Eighth Impression 2001
Ninth Impression 2005
Printed in Great Britain by
The Print Connection (UK) Ltd, Sudbury, Suffolk.
Telephone +44 (0)1787 269821

6. Author’s Preface

8. Contents

9. Contents

12. Index to figures and tables

13. 1

14. Fläkt Woods Practical Guide to Noise Control
2

15. 3
Some fundamental concepts

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17. 5
Some fundamental concepts

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19. 7
Some fundamental concepts

20. Fläkt Woods Practical Guide to Noise Control
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21. 9
Some fundamental concepts

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23. 11
Some fundamental concepts

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25. 13
Some fundamental concepts

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27. 15
Some fundamental concepts

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29. 17
Some fundamental concepts

30. 18

31. Hearing and noise acceptability 19

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33. 21
Hearing and noise acceptability

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35. 23
Hearing and noise acceptability

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37. 25
Hearing and noise acceptability

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39. 27
Hearing and noise acceptability

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41. 29
Hearing and noise acceptability

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43. 31
Hearing and noise acceptability

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45. 33
Hearing and noise acceptability

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47. 35
Hearing and noise acceptability

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49. 37

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51. 39
The measurement of acoustic properties

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53. 41
The measurement of acoustic properties

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55. 43
The measurement of acoustic properties

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57. 45
The measurement of acoustic properties

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59. 47
The measurement of acoustic properties

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61. 49
The measurement of acoustic properties

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63. 51
The measurement of acoustic properties

64. 52

65. 53
The calculation of noise levels

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67. 55
The calculation of noise levels

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69. 57
The calculation of noise levels

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71. 59
The calculation of noise levels

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73. 61
The calculation of noise levels

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75. 63
The calculation of noise levels

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77. 65
The calculation of noise levels

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79. 67
The calculation of noise levels

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81. 69
The calculation of noise levels

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83. 71
The calculation of noise levels

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85. 73
The calculation of noise levels

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87. 75
The calculation of noise levels

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89. 77
The calculation of noise levels

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91. 79
The calculation of noise levels

92. 80

93. 81
Calculation of noise in ventilating systems

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95. 83
Calculation of noise in ventilating systems

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97. 85
Calculation of noise in ventilating systems

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99. 87
Calculation of noise in ventilating systems

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101. 89
Calculation of noise in ventilating systems

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103. 91
Calculation of noise in ventilating systems

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105. 93
Calculation of noise in ventilating systems

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107. 95
Calculation of noise in ventilating systems

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109. 97
Calculation of noise in ventilating systems

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111. 99
Calculation of noise in ventilating systems

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113. 101
Calculation of noise in ventilating systems

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115. 103
Calculation of noise in ventilating systems

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117. 105
Calculation of noise in ventilating systems

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119. 107
Calculation of noise in ventilating systems

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121. 109
Calculation of noise in ventilating systems

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123. 111

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125. 113
Principles of noise control

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127. 115
Principles of noise control

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129. 117
Principles of noise control

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131. 119
Principles of noise control

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133. 121
Principles of noise control

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135. 123
Principles of noise control

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137. 125
Principles of noise control

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139. 127
Principles of noise control

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141. 129
Principles of noise control

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143. 131
Principles of noise control

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145. 133
Principles of noise control

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147. 135
Principles of noise control

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149. 137
Principles of noise control

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151. 139
Principles of noise control

152. 140

153. 141
Noise control in practice

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155. 143
Noise control in practice

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157. 145
Noise control in practice

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159. 147
Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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Noise control in practice

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187. 175
Noise control in practice

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Noise control in practice

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205. 193
Appendices

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207. 195
Appendices

208. 196

209. 197
Appendices

210. 198

211. 199

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213. 201
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