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Acoustic Beamforming: Mapping Sources of Truck Noise (2009)

Chapter: Appendix B - Vertical Distributions of Noise Sources for Heavy Trucks

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Page 76
Suggested Citation:"Appendix B - Vertical Distributions of Noise Sources for Heavy Trucks." National Academies of Sciences, Engineering, and Medicine. 2009. Acoustic Beamforming: Mapping Sources of Truck Noise. Washington, DC: The National Academies Press. doi: 10.17226/14311.
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Page 76
Page 77
Suggested Citation:"Appendix B - Vertical Distributions of Noise Sources for Heavy Trucks." National Academies of Sciences, Engineering, and Medicine. 2009. Acoustic Beamforming: Mapping Sources of Truck Noise. Washington, DC: The National Academies Press. doi: 10.17226/14311.
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Page 77

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76 Table B1. Vertical distribution of mean one-third octave band and overall A-weighted sound levels for 59 heavy trucks. A P P E N D I X B Vertical Distributions of Noise Sources for Heavy Trucks One Third Octave Band Levels re 20 microPascals at 6m Range Frequency (Hz) Elevation (m) 100 125 169 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 OASPL -3.81 67.15 61.31 65.43 65.34 61.42 59.52 60.26 62.64 59.89 61.03 63.07 60.25 58.90 57.76 56.79 74.12 -3.56 67.22 61.43 65.58 65.54 61.79 60.04 60.78 62.95 60.23 61.16 62.82 60.31 59.18 57.52 56.75 74.28 -3.31 67.30 61.54 65.73 65.75 62.19 60.60 61.35 63.34 60.60 61.30 62.51 60.29 59.43 57.39 56.81 74.45 -3.06 67.38 61.66 65.89 65.97 62.62 61.18 61.97 63.87 60.98 61.44 62.14 60.19 59.65 57.37 56.98 74.66 -2.81 67.46 61.78 66.04 66.20 63.08 61.79 62.65 64.56 61.36 61.58 61.79 59.98 59.79 57.39 57.00 74.89 -2.56 67.53 61.89 66.20 66.45 63.58 62.41 63.39 65.38 61.73 61.72 61.53 59.68 59.73 57.29 56.74 75.15 -2.31 67.61 62.01 66.35 66.71 64.11 63.05 64.20 66.29 62.07 61.87 61.44 59.49 59.60 57.35 56.53 75.46 -2.06 67.69 62.13 66.51 66.98 64.66 63.69 65.08 67.24 62.39 62.09 61.51 59.66 59.50 57.54 56.46 75.84 -1.81 67.76 62.25 66.66 67.26 65.24 64.32 66.06 68.25 62.76 62.49 61.81 60.20 59.21 57.70 56.50 76.28 -1.56 67.83 62.36 66.81 67.55 65.83 64.92 67.15 69.44 63.42 63.19 62.67 60.75 58.96 57.67 56.41 76.84 -1.31 67.90 62.47 66.96 67.85 66.42 65.50 68.33 70.94 64.73 64.12 64.20 61.25 59.26 57.57 56.23 77.60 -1.06 67.96 62.59 67.10 68.14 66.99 66.02 69.58 72.79 66.86 65.15 65.93 62.11 60.09 58.00 55.99 78.61 -0.81 68.02 62.69 67.23 68.43 67.54 66.49 70.84 74.83 69.44 66.32 67.38 63.16 61.00 58.65 56.30 79.83 -0.56 68.07 62.80 67.36 68.70 68.04 66.91 72.04 76.80 71.96 67.90 68.75 63.86 61.41 58.77 56.34 81.16 -0.31 68.11 62.91 67.48 68.95 68.48 67.26 73.08 78.49 74.03 69.78 70.39 64.69 61.90 59.12 56.59 82.47 -0.06 68.14 63.01 67.60 69.17 68.85 67.54 73.89 79.78 75.48 71.29 71.90 66.27 64.21 60.82 57.83 83.59 0.19 68.16 63.11 67.70 69.34 69.12 67.76 74.41 80.57 76.18 71.86 72.44 67.06 65.63 62.23 59.04 84.22 0.44 68.16 63.21 67.79 69.46 69.28 67.89 74.58 80.81 76.04 71.26 71.60 65.92 63.99 60.61 57.64 84.21 0.69 68.15 63.30 67.87 69.52 69.32 67.92 74.34 80.46 74.95 69.69 70.03 64.51 62.50 59.61 57.14 83.68 0.94 68.13 63.39 67.93 69.52 69.24 67.82 73.66 79.46 72.86 68.08 69.17 64.55 62.33 59.60 57.24 82.78 1.19 68.09 63.47 67.98 69.46 69.03 67.55 72.50 77.78 69.93 67.01 68.52 64.13 62.32 59.97 57.30 81.56 1.44 68.03 63.55 68.02 69.33 68.69 67.08 70.89 75.42 67.14 65.57 66.74 62.68 61.32 58.91 56.62 80.05 1.69 67.96 63.62 68.04 69.15 68.24 66.39 68.89 72.46 65.67 63.19 63.76 60.75 60.45 58.07 55.97 78.51 1.94 67.87 63.67 68.04 68.92 67.70 65.50 66.77 69.33 64.60 60.62 60.92 59.41 60.34 57.99 55.32 77.29 2.19 67.76 63.71 68.03 68.67 67.12 64.47 64.96 66.85 62.74 58.97 59.79 58.92 60.25 57.71 55.30 76.47 2.44 67.63 63.73 67.99 68.39 66.53 63.47 63.83 65.51 60.35 58.17 60.20 59.98 60.28 57.19 55.55 76.00 2.69 67.49 63.72 67.93 68.12 66.00 62.72 63.36 64.83 59.04 57.97 61.37 61.03 59.83 57.12 55.63 75.76 2.94 67.34 63.70 67.85 67.85 65.55 62.37 63.32 64.34 59.44 58.76 62.35 61.43 59.45 57.25 56.04 75.65 3.19 67.17 63.64 67.75 67.59 65.18 62.32 63.48 63.95 60.38 60.58 63.61 61.39 59.15 57.30 56.58 75.64 3.44 66.99 63.57 67.62 67.34 64.87 62.36 63.60 63.63 61.19 62.29 64.90 61.32 59.11 57.69 57.00 75.71 3.69 66.80 63.46 67.45 67.08 64.58 62.29 63.51 63.23 61.56 63.32 65.34 61.10 59.39 58.43 57.47 75.68 3.94 66.60 63.33 67.26 66.82 64.26 62.00 63.08 62.56 61.34 63.71 64.92 60.39 59.09 58.05 57.46 75.42 4.19 66.39 63.18 67.03 66.53 63.88 61.44 62.28 61.50 60.68 63.61 64.15 59.76 58.77 58.19 57.32 75.04 4.44 66.18 63.00 66.77 66.21 63.41 60.61 61.09 60.13 60.15 63.25 63.39 59.63 58.98 58.75 57.06 74.63 4.69 65.96 62.80 66.48 65.86 62.84 59.52 59.58 58.87 60.31 62.82 62.79 59.74 59.09 59.10 57.03 74.25 4.94 65.74 62.59 66.17 65.46 62.18 58.18 57.78 58.49 60.97 62.40 62.42 59.82 59.04 59.41 56.86 73.92 5.19 65.52 62.36 65.82 65.03 61.41 56.62 55.80 59.20 61.65 61.92 62.19 59.71 59.36 59.63 56.55 73.65 5.44 65.30 62.12 65.45 64.56 60.57 54.88 53.78 60.42 62.16 61.37 62.11 59.57 59.98 59.86 56.32 73.45 5.69 65.09 61.86 65.06 64.06 59.64 53.02 52.03 61.63 62.54 60.83 62.29 59.69 60.53 59.77 56.10 73.30 5.94 64.88 61.61 64.66 63.52 58.65 51.15 50.96 62.65 62.86 60.39 62.70 59.93 61.11 59.51 55.99 73.22 6.19 64.67 61.34 64.24 62.97 57.61 49.42 50.79 63.47 63.11 60.04 63.13 60.12 61.47 59.29 56.20 73.17 6.44 64.47 61.08 63.81 62.39 56.54 48.03 51.28 64.11 63.28 59.76 63.44 60.21 61.75 59.20 56.36 73.12 6.69 64.27 60.81 63.37 61.79 55.46 47.11 52.03 64.61 63.33 59.54 63.67 60.30 62.08 59.15 56.32 73.08 6.94 64.08 60.55 62.93 61.19 54.39 46.65 52.77 64.98 63.26 59.35 63.89 60.50 62.19 58.96 56.31 73.02 7.19 63.89 60.29 62.50 60.58 53.35 46.51 53.42 65.27 63.10 59.21 64.16 60.81 62.18 58.70 56.33 72.97 7.44 63.72 60.04 62.06 59.97 52.37 46.55 53.98 65.48 62.87 59.12 64.47 61.17 62.26 58.60 56.32 72.94 7.69 63.55 59.79 61.63 59.37 51.46 46.65 54.46 65.63 62.62 59.08 64.77 61.50 62.31 58.58 56.45 72.92 7.94 63.39 59.55 61.20 58.76 50.65 46.77 54.89 65.74 62.36 59.09 65.03 61.79 62.22 58.44 56.66 72.88 8.19 63.23 59.31 60.79 58.17 49.95 46.88 55.28 65.82 62.12 59.15 65.21 62.02 62.03 58.29 56.77 72.84 Generated by VertScanStatistics_Plotter1.m and includes y offset=.27m

77 Table B2. Vertical distribution of maximum one-third octave band and overall A-weighted sound levels for 59 heavy trucks. One Third Octave Band Levels re 20 microPascals at 6m Range Frequency (Hz) Elevation (m) 100 125 169 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 OASPL -3.81 83.18 70.08 78.99 81.44 74.61 72.64 73.52 73.46 70.75 70.73 71.05 66.39 66.03 63.66 63.27 85.62 -3.56 83.27 70.31 79.07 81.52 74.67 72.94 73.94 73.93 71.69 71.46 70.65 66.41 66.42 63.80 63.10 85.81 -3.31 83.36 70.54 79.15 81.59 74.70 73.20 74.30 74.32 72.53 72.16 69.81 66.50 65.84 63.28 63.43 86.00 -3.06 83.44 70.77 79.21 81.64 74.70 73.41 74.59 74.61 73.20 72.89 69.22 67.30 65.40 62.71 65.20 86.16 -2.81 83.53 71.00 79.27 81.69 74.64 73.57 74.79 74.76 73.66 73.72 69.70 67.36 66.35 63.00 65.43 86.26 -2.56 83.62 71.24 79.32 81.72 74.54 73.66 74.89 74.75 73.85 74.65 69.46 66.82 67.32 62.90 63.78 86.26 -2.31 83.70 71.47 79.35 81.74 74.38 73.68 74.88 75.02 73.70 75.62 68.30 66.23 67.94 62.77 62.43 86.18 -2.06 83.79 71.70 79.38 81.75 74.88 73.61 74.74 76.53 73.20 76.45 69.45 67.29 68.17 63.22 61.59 86.02 -1.81 83.87 71.93 79.39 81.74 75.81 73.45 74.45 77.89 72.41 76.94 69.77 68.24 66.75 64.03 61.64 85.83 -1.56 83.94 72.15 79.40 81.72 76.72 73.20 74.60 79.09 71.95 76.87 70.04 67.84 63.74 63.74 62.15 85.67 -1.31 84.01 72.35 79.39 81.69 77.59 72.83 76.37 80.13 73.01 76.05 72.30 67.22 63.71 62.56 62.95 85.61 -1.06 84.07 72.55 79.38 81.66 78.41 72.59 77.96 81.06 77.49 74.37 74.52 68.99 64.15 62.18 61.72 85.69 -0.81 84.13 72.73 79.37 81.62 79.16 72.60 79.30 81.94 81.82 74.80 76.96 70.38 65.25 64.18 63.00 85.96 -0.56 84.17 72.89 79.36 81.59 79.83 72.37 80.33 83.61 85.05 75.38 79.84 71.01 65.80 64.32 61.70 87.63 -0.31 84.20 73.03 79.36 81.57 80.40 72.58 81.49 85.96 87.30 78.45 82.23 72.50 66.67 63.09 62.98 89.77 -0.06 84.22 73.14 79.37 81.57 80.86 73.26 82.96 87.67 88.66 79.86 83.11 73.20 68.97 65.31 63.79 91.14 0.19 84.22 73.22 79.41 81.61 81.20 73.70 83.94 88.72 89.16 79.56 81.86 73.92 71.33 65.66 64.98 91.66 0.44 84.21 73.28 79.47 81.68 81.39 73.88 84.42 89.10 88.74 77.27 80.05 74.21 68.87 65.34 64.22 91.23 0.69 84.17 73.29 79.57 81.80 81.42 73.76 84.35 88.78 87.28 77.89 78.62 71.65 66.64 64.48 62.57 89.86 0.94 84.11 73.27 79.70 81.96 81.27 73.63 83.69 87.66 84.62 77.83 78.64 72.52 67.93 63.88 63.42 88.54 1.19 84.04 73.20 79.86 82.16 80.93 73.69 82.38 85.60 80.65 75.65 76.55 71.41 67.93 64.87 63.41 87.13 1.44 83.93 73.10 80.05 82.38 80.38 73.48 80.32 82.78 78.14 74.68 74.71 69.77 66.30 64.28 63.60 86.80 1.69 83.81 72.95 80.24 82.63 79.59 72.94 77.42 80.23 77.57 72.55 72.83 69.91 65.07 62.08 62.76 86.73 1.94 83.66 72.75 80.44 82.88 78.55 71.95 73.66 76.91 76.09 69.66 68.55 68.00 65.20 62.81 61.61 86.72 2.19 83.48 72.51 80.62 83.12 78.01 72.64 73.14 74.48 73.89 68.55 65.76 65.06 66.28 63.69 61.64 86.87 2.44 83.28 72.22 80.78 83.34 78.86 74.18 74.06 73.55 70.66 66.70 66.25 65.45 65.38 63.40 61.79 87.25 2.69 83.05 71.89 80.91 83.52 79.53 75.57 75.99 75.02 69.02 64.83 67.64 67.01 63.94 60.95 62.23 87.72 2.94 82.81 71.63 81.00 83.64 80.01 76.67 77.51 76.74 71.05 65.57 69.36 68.16 63.70 61.78 62.46 88.22 3.19 82.54 71.80 81.04 83.71 80.30 77.43 78.52 77.82 73.32 70.22 70.18 68.96 64.05 62.48 61.26 88.67 3.44 82.25 71.90 81.02 83.72 80.41 77.85 79.04 78.27 74.64 73.11 73.59 68.28 65.13 63.36 64.19 89.02 3.69 81.94 71.94 80.95 83.65 80.35 77.91 79.08 78.09 74.76 73.66 75.20 70.52 66.45 66.60 66.13 89.06 3.94 81.61 72.00 80.83 83.52 80.11 77.65 78.67 77.32 73.66 72.54 74.55 69.91 65.87 63.23 62.76 88.69 4.19 81.28 72.14 80.64 83.31 79.72 77.06 77.82 75.94 71.94 70.87 72.42 67.20 64.94 63.64 63.95 88.17 4.44 80.93 72.32 80.40 83.05 79.17 76.17 76.56 74.01 70.53 70.90 71.01 66.99 64.41 63.23 63.04 87.62 4.69 80.57 72.45 80.11 82.72 78.49 74.98 74.90 71.63 70.06 70.79 71.04 67.00 64.35 63.17 63.04 87.07 4.94 80.20 72.54 79.77 82.33 77.68 73.51 72.84 69.10 71.32 70.12 70.33 67.17 63.92 63.30 63.86 86.54 5.19 79.83 72.59 79.38 81.89 76.74 71.75 70.41 67.55 72.14 69.13 69.27 67.30 63.95 64.13 63.41 86.02 5.44 79.46 72.62 78.95 81.41 75.69 69.74 67.68 70.16 72.70 68.08 69.98 67.06 64.48 64.98 62.45 85.53 5.69 79.09 72.62 78.48 80.89 74.54 67.50 64.88 71.83 73.12 67.19 71.55 66.75 66.78 65.89 62.44 85.07 5.94 78.72 72.60 77.99 80.34 73.30 65.14 62.61 72.77 73.42 66.52 73.02 66.68 68.02 65.48 61.92 84.65 6.19 78.36 72.56 77.46 79.76 71.97 62.90 61.59 73.18 73.57 65.95 73.94 67.13 67.90 65.09 62.52 84.25 6.44 78.00 72.51 76.92 79.16 70.58 61.19 61.70 73.26 73.50 65.35 74.39 67.41 68.19 65.73 62.80 83.84 6.69 77.65 72.44 76.35 78.54 69.14 60.35 62.22 73.51 73.19 65.64 74.69 67.55 69.02 65.14 63.02 83.41 6.94 77.30 72.36 75.77 77.91 67.67 60.23 62.72 73.92 72.92 66.55 75.14 68.44 69.17 64.01 61.78 82.99 7.19 76.97 72.27 75.18 77.27 66.21 60.46 63.09 74.19 72.97 67.24 75.83 69.28 68.27 63.90 62.24 82.63 7.44 76.64 72.18 74.59 76.63 64.81 60.75 63.34 74.36 72.74 67.65 76.64 69.84 67.39 63.85 62.54 82.30 7.69 76.33 72.08 73.99 75.98 63.54 61.00 63.48 74.49 72.83 67.83 77.38 70.02 67.77 64.04 62.78 81.99 7.94 76.02 71.98 73.39 75.34 62.46 61.18 63.55 74.57 73.08 67.88 77.93 69.86 68.07 64.21 62.27 81.66 8.19 75.72 71.88 72.80 74.71 61.64 61.30 63.57 74.63 73.25 67.89 78.23 69.55 68.22 63.96 62.03 81.32 Generated by VertScanStatistics_Plotter1.m and includes y offset=.27m

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TRB’s National Cooperative Highway Research Program (NCHRP) Report 635: Acoustic Beamforming: Mapping Sources of Truck Noise explores the acoustic beamforming technique in an attempt to pinpoint and measure noise levels from heavy truck traffic. The beamforming technique uses an elliptical array of more than 70 microphones and data acquisition software to measure noise levels from a variety of noise sources on large trucks—including the engine, tires, mufflers, and exhaust pipes.

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