Revision of ISO 717: Why Not Use Impact Sound Reduction Indices Instead of Impact Sound Pressure Levels?
Abstract:In the current edition of ISO 717 airborne and impact sound insulation are described in an oppositional way: airborne sound insulation is expressed in terms of a 'sound reduction index', impact sound insulation, however, as an 'impact sound pressure level'. The fussiness of two diff erent approaches for comparable properties of building elements is furthermore increased by the duality or mixture of reference curve comparison and A-weighting methods. The implicit and exclusive application of the tapping machine for the impact sound pressure level prevents any flexibility in the impact source characteristics, other than with airborne sound reduction indices, where traffic noise and 'living' noise from the neighbour can be used likewise for building element characterisation. This paper proposes to replace the impact sound pressure level by a new quantity called "impact sound reduction index". A detailed introduction into the background of this paper is given in .
Document Type: Research Article
Publication date: May 1, 2011
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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