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Figure 9


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Power attenuation AttW for case 1 (1 source). Theory with a random noise: hf = 0.05 m (solid line) or hf = 0.0085 m (solid line with crosses). Measurement (dashed line): hf = 0.05 m with 1 control speaker placed in front of the trombone. FEM without added noise (dotted line): hf = 0.05 m.

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