BS ISO 20189:2018 pdf free download.Acoustics — Screens, furniture and single objects intended for interior use — Rating of sound absorption and sound reduction of elements based on laboratory measurements.
The interior design industry is progressing rapidly, and the acoustic characteristics of products have become an important technical aspect in the design of new products. Currently, interior design products are generally not well defined in terms of their acoustic characteristics, often leading to confusing and misleading product specifications and marketing materials. Further, it is often unclear how a product’s reported acoustic characteristics are to be applied to determine its acoustic impact in a furnished room.
This document is intended to clarify the acoustic characteristics, and their application, for various interior design products. This is accomplished by a standardized test methodology for the measurement of sound absorption, and defining when an Interior product is to he considered as a single object.
This document is intended to facilitate the measurement and evaluation procedure for any interior product currently on the market. By using it, different interior design products can he compared to each other in an equal manner. Additionally, product acoustic characteristics evaluated according to this document can be applied for room acoustic modelling and calculations.
This document specifies how screens, furniture and single objects intended for interior use are assessed with regard to sound absorption and specifies the evaluation of sound attenuation for floor screens. It also specifies under which circumstances various interior iroducts for offices, schools and other public spaces are considered as plane absorbers or as discrete single objects. A product considered as a single object and intended for interior use is measured according to ISO 354 and evaluated by its equivalent sound absorption area or object sound absorption coefficient in octave bands. This document defines interior products and single objects and it comprises additional information regarding measurements and assessment of single objects.
The sound absorption as specified in this document can he used to calculate:
a) reverberation time characteristics in rooms;
b) room acoustic parameters using ray tracing software.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 354:2003. Acoustics — Measurement of sound absorption in a reverberation room
ISO 717-1:2013. Acoustics — Rating of sound insulation in buildings and of building elements — Part 1:Airborne sound Insulation
ISO 10053, Acoustics — Measurement of office screen sound attenuation under specific laboratory conditions ISO 10140-2, Acoustics — Laboratory measurement of sound insulation of building elements — Part 2:Measurement of airborne sound insulation
ISO 11654:1997. Acoustics — Sound absorbers for use in buildings — Rating of sound absorption