For normally
incident sound, the graph illustrates the angular response at 12.5 kHz.
The flat reflector scatters sound primarily into the 90° specular direction.
The wall mounted absorptive panel has similar response, only attenuated.
The BAD™ Panel decreases specular scattering and more closely approaches
the uniform ideal diffusion line. | Level (dB) | |||
| Angle (Degrees) | 1 Inch BAD™ Panel | Reflector | 1 Inch Absorber |
| 0 | -17.13 | -26.05 | -31.83 |
| 5 | -17.37 | -26.14 | -32.33 |
| 10 | -14.76 | -24.56 | -35.52 |
| 15 | -13.75 | -25.63 | -34.31 |
| 20 | -13.47 | -23.68 | -33.00 |
| 25 | -14.55 | -22.23 | -32.45 |
| 30 | -13.13 | -20.45 | -29.91 |
| 35 | -11.07 | -18.81 | -29.63 |
| 40 | -11.28 | -17.79 | -31.65 |
| 45 | -9.24 | -16.12 | -31.89 |
| 50 | -6.46 | -14.85 | -32.97 |
| 55 | -10.90 | -11.08 | -27.69 |
| 60 | -9.00 | -7.31 | -26.82 |
| 65 | -2.75 | -1.99 | -22.32 |
| 70 | -1.15 | 3.20 | -12.70 |
| 75 | -4.46 | 4.91 | -9.94 |
| 80 | -2.89 | 2.56 | -11.25 |
| 85 | -5.25 | 3.77 | -11.61 |
| 90 | 1.59 | 4.04 | -12.43 |
| 95 | 1.17 | 4.36 | -11.62 |
| 100 | -2.76 | 2.74 | -12.88 |
| 105 | 3.25 | 5.05 | -10.89 |
| 110 | -1.24 | 1.86 | -12.82 |
| 115 | -3.38 | -3.09 | -18.04 |
| 120 | -9.68 | -7.98 | -21.47 |
| 125 | -12.17 | -12.58 | -26.90 |
| 130 | -6.63 | -15.37 | -30.83 |
| 135 | -5.80 | -17.42 | -32.04 |
| 140 | -10.75 | -18.93 | -31.77 |
| 145 | -15.24 | -19.61 | -32.22 |
| 150 | -14.28 | -20.81 | -31.38 |
| 155 | -14.28 | -21.82 | -32.09 |
| 160 | -17.17 | -23.52 | -31.64 |
| 165 | -18.19 | -26.37 | -34.23 |
| 170 | -19.63 | -25.26 | -34.72 |
| 175 | -25.01 | -25.88 | -31.46 |
| 180 | -25.08 | -25.87 | -31.55 |
Angular
Scattering Response
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Copyright
2000, RPG Diffusor Systems, Inc. |