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Figure 8


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Power attenuation AttW for case 5 (9 sources). Theory with a random noise: hr = 0.16 m and hf = 0.05 m (solid line) or hf = 0.0085 m (solid line with crosses). Measurement (over 2 sets, dashed line and dotted one): 8 control speakers on a ring are placed at hr = 0.16 m and a ninth one at hf = 0.05 m front of the trombone.

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