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ASTM E1110-06(2019)
Standard Classification for Determination of Articulation Class
NORMA vydaná dňa 1.4.2019
Informácie o norme:
Označenie normy: ASTM E1110-06(2019)
Dátum vydania normy: 1.4.2019
Kód tovaru: NS-948641
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM E1110-06(2019) :
Keywords:
architectural acoustics, articulation class, open office, open-plan space, sound attenuation, speech privacy,, ICS Number Code 17.140.01 (Acoustic measurements and noise abatement in general)
Doplňujúce informácie
| Significance and Use | ||||
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4.1 Each weighting factor given in Table 1 represents the fraction of overall speech intelligence contained within the associated one-third octave frequency band. 4.2 The weighting factors in Table 1 are obtained by multiplying each individual one-third octave band weighting factor of ANSI S3.5-1969 by 300. Articulation class (AC) values are thus related to but distinctly different from articulation index (AI) values. In particular, the AC considers only the effect of signal attenuation; while the AI considers such additional factors as speech level and spectrum and background sound level and spectrum. Note 2: The AC is similar to the DAI rating proposed by
Warnock1.1 This classification provides a single
figure rating that can be used for comparing building systems and
subsystems for speech privacy purposes. The rating is designed to
correlate with transmitted speech intelligence between office
spaces.
1.2 Excluded from the scope of this classification are applications involving female speakers or children,Note 1: Published work by Pearsons, et al, may eventually permit the restriction on female speakers to be relaxed.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||
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