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Find acoustic pressure (in Pa) for the following SPL: 20 dB re 1pPa, 60 dB, 120 dB, 36 dB, 128 dB, -36 dB, -74 dB.

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Find acoustic pressure (in Pa) for the following SPL: 20 dB re 1pPa, 60 dB, 120 dB, 36 dB, 128 dB, -36 dB, -74 dB. (without calculator, using the table below, showing how you did it) Amplitude ratio, P, /P2 Intensity ratio, (P, /P2)2 dB 1 1 0 V2 = 1.4 2 3 2 4 6 V10 = 3 10 10 4 16 12 10 100 20 100 10000 40

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