Fundamentals of acoustics
Pneumatic power - Acoustic characterization of exhaust silencers
Article REF: BM6116 V1
Fundamentals of acoustics
Pneumatic power - Acoustic characterization of exhaust silencers

Authors : Xavier CARNIEL, Said CHABANE, Sylvie SESMAT

Publication date: November 10, 2020 | Lire en français

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2. Fundamentals of acoustics

2.1 The sound

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2.1.1 Physical phenomenon

Acoustics involves wave phenomena and vibration mechanics. Sound is in fact a pressure wave resulting from the successive compression and decompression of the medium in which it propagates (figure 1 ). In the case of air, a vibrating source sets nearby gas molecules in motion, and this motion is transmitted to successive layers of air. Atmospheric pressure oscillates around 10 5...

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