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Figure 14


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Measurement of the sound level decrease according to the distance for the six first harmonics H1 to H6 of the note B4 (f0 = 466 Hz) with 12 microphones placed from 0.2 m to 3.5 m. Dotted lines represent the theoretical sound pressure level Lp = Lp0 − 20log(r) with Lp0 the sound pressure level at 0.2 m from the trombone.

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