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ASTM E3222-20

(Classification)

Standard Classification for Determination of High-frequency Impact Sound Ratings

Standard Classification for Determination of High-frequency Impact Sound Ratings

SIGNIFICANCE AND USE
4.1 This classification provides a family of single-number ratings for describing high-frequency impact sound insulation. “High-frequency” in this context refers to the third-octave bands from 400 to 3150 Hz, which is approximately the upper half of the frequency range of interest in building acoustics measurements. Common sources of high-frequency impact sound include the impact of hard-heeled shoes, dragging furniture, dog toenails, and dropping objects on hard-surfaced flooring.  
4.2 The high-frequency impact sound insulation of an assembly is primarily determined by the characteristics of the floor topping, largely independent of the other details of the assembly.3 For many assemblies, the existing ratings (such as IIC) become controlled by frequency bands below 400 Hz. For these assemblies, the existing ratings are not representative of the impact insulation at high frequencies. The high-frequency ratings defined here have been shown to accurately represent the behavior of assemblies at high frequencies.4,5 These ratings are intended to aid the acoustical professional in evaluating the high-frequency insulation of an assembly, and in evaluating, rank-ordering, and specifying floor topping products that will affect the level of high-frequency impact sound.  
4.3 The ratings in this classification have similar numerical range and behavior as the existing ratings of Classification E989. Further, the ratings in this classification can be calculated from existing test reports without additional testing. This was done to take advantage of the existing test results and body of knowledge.  
4.4 This classification describes only the high-frequency range of impact sound and no other aspects of impact noise. It does not address impact sound below 400 Hz, such as thudding from footfalls, and additional ratings are required to describe impact sound in these frequency ranges. This classification does not replace Classification E989 (Impact Insulation Class) and is not i...
SCOPE
1.1 This classification provides methods for calculating single-number ratings of high-frequency impact sound transmission, based on one-third-octave-band impact sound pressure levels generated by the standard tapping machine as described in Test Methods E492, E1007, and E2179.  
1.2 This classification defines ratings that are not defined in other standards. Within their purview, other standards shall define additional ratings based on the methods of this classification.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

Status
Historical
Publication Date
31-Dec-2019
ICS
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.10 - Structural Acoustics and Vibration
Current Stage
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ASTM E3222-20 - Standard Classification for Determination of High-frequency Impact Sound RatingsASTM E3222-20 - Standard Classification for Determination of High-frequency Impact Sound Ratings
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ASTM E3222-20 - Standard Classification for Determination of High-frequency Impact Sound Ratings
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E3222 −20
Standard Classification for
1
Determination of High-frequency Impact Sound Ratings
This standard is issued under the fixed designation E3222; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E2179 Test Method for Laboratory Measurement of the
Effectiveness of Floor Coverings in Reducing Impact
1.1 This classification provides methods for calculating
Sound Transmission Through Concrete Floors
single-number ratings of high-frequency impact sound
transmission, based on one-third-octave-band impact sound
3. Terminology
pressure levels generated by the standard tapping machine as
described in Test Methods E492, E1007, and E2179. 3.1 The following terms used in this classification have
specific meaning that are defined in Terminology C634: aver-
1.2 This classification defines ratings that are not defined in
age sound pressure level; decibel; flanking transmission; im-
other standards. Within their purview, other standards shall
pact insulation class; level; octave band; sound insulation;
define additional ratings based on the methods of this classifi-
sound isolation; sound pressure; sound pressure level.
cation.
3.2 The following terms used in this classification have
1.3 This standard does not purport to address all of the
specific meaning that are defined in Test Method E1007:
safety concerns, if any, associated with its use. It is the
absorption normalized impact sound pressure level, ANISPL;
responsibility of the user of this standard to establish appro-
apparent impact insulation class, AIIC; impact sound pressure
priate safety, health, and environmental practices and deter-
level, ISPL; impact sound rating, ISR; normalized impact
mine the applicability of regulatory limitations prior to use.
sound rating, NISR; receiving room; reverberation time nor-
1.4 This international standard was developed in accor-
malized impact sound pressure level, RTNISPL.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.3 Definitions of Terms Specific to This Standard:
Development of International Standards, Guides and Recom- 3.3.1 absorption-normalized high-frequency impact rating,
mendations issued by the World Trade Organization Technical
AHIR, n—the single-number rating calculated in accordance
Barriers to Trade (TBT) Committee. with this classification using the absorption normalized impact
sound pressure levels measured in a building, as described in
2. Referenced Documents
Test Method E1007.
2
3.3.1.1 Discussion—This rating is the high-frequency ana-
2.1 ASTM Standards:
log of the apparent impact insulation class (AIIC).
C634 Terminology Relating to Building and Environmental
Acoustics
3.3.2 high-frequency impact insulation class, HIIC, n—of a
E492 Test Method for Laboratory Measurement of Impact
floor-ceiling assembly installed in a laboratory, the single-
Sound Transmission Through Floor-Ceiling Assemblies
number rating calculated in accordance with this classification
Using the Tapping Machine
usingthenormalizedimpactsoundpressurelevelsasdescribed
E989 Classification for Determination of Single-Number
in Test Method E492.
Metrics for Impact Noise
3.3.2.1 Discussion—This rating is the high-frequency ana-
E1007 Test Method for Field Measurement of Tapping
log of the impact insulation class (IIC).
Machine Impact Sound Transmission Through Floor-
3.3.3 high-frequency impact rating, HIR, n—the single-
Ceiling Assemblies and Associated Support Structures
number rating calculated in accordance with this classification
using the non-normalized impact sound pressure levels mea-
sured in a building, as described in Test Method E1007.
1
This classification is under the jurisdiction of ASTM Committee E33 on
3.3.3.1 Discussion—This rating is the high-frequency ana-
Building and Environmental Acoustics and is the direct responsibility of Subcom-
3
log of impact sound rating (ISR).
mittee E33.10 on Structural Acoustics and Vibration.
Current edition approved Jan. 1, 2020. Published February 2020. DOI: 10.1520/
E3222-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM LoVerde, J.J. and Dong, W.D., “A dual-rating method for evaluating impact
Standards volume information, refer to the standard’s Document Summary page on noise isolation of floor-ceiling assemblies,” Journal of the Acoustical Society of
the ASTM website. America, Vol. 141, 2017, pp. 428-440.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
...

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1.1 This test method covers the laboratory measurement of impact sound transmission of floor-ceiling assemblies using a standardized tapping machine. It is assumed that the test specimen constitutes the primary sound transmission path into a receiving room located directly below and that a good approximation to a diffuse sound field exists in this room.  
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1.4 Laboratory Accreditation—The requirements for accrediting a laboratory for performing this test method are given in Annex A2.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method

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5.1 The acoustical impedance properties of a sound absorptive material are related to its physical properties, such as airflow resistance, porosity, elasticity, and density. As such, the measurements described in this test method are useful in basic research and product development of sound absorptive materials.  
5.2 Normal incidence sound absorption coefficients are more useful than random incidence coefficients in certain situations. They are used, for example, to predict the effect of placing material in a small enclosed space, such as inside a machine.  
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1.1 This test method covers the use of an impedance tube, alternatively called a standing wave apparatus, for the measurement of impedance ratios and the normal incidence sound absorption coefficients of acoustical materials.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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5.1 The specific airflow resistance of an acoustical material is one of the properties that determine its sound-absorptive and sound-transmitting properties. Measurement of specific airflow resistance is useful during product development, for quality control during manufacture, and for specification purposes.  
5.2 Valid measurements are made only in the region of laminar airflow where, aside from random measurement errors, the airflow resistance (R = P/U) is constant. When the airflow is turbulent, the apparent airflow resistance increases with an increase of volume velocity and the term “airflow resistance” does not apply.  
5.3 The specific airflow resistance measured by this test method may differ from the specific resistance measured by the impedance tube method in Test Method E384 for two reasons. In the presence of sound, the particle velocity inside a porous material is alternating while in this test method, the velocity is constant and in one direction only. Also, the particle velocity inside a porous material is not the same as the linear velocity measured outside the specimen.
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1.1 This test method covers the measurement of airflow resistance and the related measurements of specific airflow resistance and airflow resistivity of porous materials that can be used for the absorption and attenuation of sound. Materials cover a range from thick boards or blankets to thin mats, fabrics, papers, and screens. When the material is anisotropic, provision is made for measurements along different axes of the specimen.  
1.2 This test method is designed for the measurement of values of specific airflow resistance ranging from 100 to 10 000 mks rayls (Pa·s/m) with linear airflow velocities ranging from 0.5 mm/s to 50 mm/s and pressure differences across the specimen ranging from 0.1 Pa to 250 Pa. The upper limit of this range of linear airflow velocities is a point at which the airflow through most porous materials is in partial or complete transition from laminar to turbulent flow.  
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cgs acoustic ohm  
mks acoustic ohm (Pa·s/m3)  
105  
cgs rayl  
mks rayl (Pa·s/m)  
10    
cgs rayl/cm  
mks rayl/m (Pa·s/m2)  
103  
cgs rayl/in.  
mks rayl/m (Pa·s/m2)  
394  
mks rayl/in.  
mks rayl/m (Pa·s/m2)  
39.4  
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1.1 This test method specifies the procedure used to measure the masking sound in terms of A-weighted and one-third-octave-band sound pressure levels.  
1.2 The results of this test method can be used to determine if and where the masking sound meets (or does not meet) a particular specification.  
1.3 This test method does not evaluate the overall acoustical environment. It is intended only to measure and report the masking sound levels.  
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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.

  • Standard
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  • Standard
    4 pages
    English language
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