Applied Acoustics: Concepts, Absorbers, and Silencers for - download pdf or read online

By Helmut V. Fuchs

ISBN-10: 3642293662

ISBN-13: 9783642293665

ISBN-10: 3642293670

ISBN-13: 9783642293672

The writer supplies a entire evaluate of fabrics and elements for noise regulate and acoustical convenience. Sound absorbers needs to meet acoustical and architectural requisites, which fibrous or porous fabric by myself can meet. fundamentals and purposes are verified, with consultant examples for spatial acoustics, free-field try out amenities and canal linings. Acoustic engineers and building execs will locate a few new uncomplicated recommendations and instruments for advancements with a view to enhance acoustical convenience. Interference absorbers, energetic resonators and micro-perforated absorbers of other fabrics and designs entire the record of applications.

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Extra info for Applied Acoustics: Concepts, Absorbers, and Silencers for Acoustical Comfort and Noise Control: Alternative Solutions - Innovative Tools - Practical Examples

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In: Proceedings—CFA/DAGA 2004, Strasbourg, pp 81–82 Chapter 3 Sound Absorption for Noise Control and Room-Acoustical Design If a sound wave with a sound power Pi , a sound pressure pi , a sound particle velocity vi and a frequency f impinges on an obstacle which is large compared to its wavelength λ, it is partially reflected (Pr ) (and possibly diffracted and scattered), allowed to pass through (Pt ), transmitted as structure-borne sound (Pf ), as well as absorbed (Pa ), see Fig. 1, with Pi = Pr + Pt + Pf + Pa .

Chapter 11 will then deal with the application of new concepts and elements for progressive room acoustics and Chap. 12, respectively Chap. 13 with concepts and elements for innovative freefield rooms, respectively duct silencers. All three last mentioned chapters give numerous representative application examples. 1 Conclusions Noise control and acoustic comfort tasks escalate in complexity at the low frequencies. The problems are mostly obscured by single-number rating and A-weighting being regularly applied.

G. Sects. 10. References Bies DA, Hansen CH (1996) Engineering noise control. E & FN Spon, London CD-ROM (1998) Ausschnitte aktueller Themen. Fraunhofer IBP, Stuttgart Cremer L, Müller HA (1974) Die wissenschaftlichen Grundlagen der Raumakustik, vol II. Hirzel, Stuttgart Cremer L, Müller HA (1978) Die wissenschaftlichen Grundlagen der Raumakustik, vol I. Hirzel, Stuttgart Cremer L, Müller HA (1982a) Principles and applications of room acoustics, vol I. Applied Science, London Cummings A (1992) The effects of a resonator array on the sound field in a cavity.

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Applied Acoustics: Concepts, Absorbers, and Silencers for Acoustical Comfort and Noise Control: Alternative Solutions - Innovative Tools - Practical Examples by Helmut V. Fuchs


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