ASTM C634-11

Standard Terminology Relating to Building and Environmental Acoustics

SCOPE
1.1 This terminology covers terms and definitions related to environmental acoustics. Only definitions common to two or more standards under the jurisdiction of Committee E33 are listed here. The purpose of this terminology is to promote uniformity of key definitions. Definitions pertinent to only one standard and exceptions to the definitions listed below are contained in the individual standards and should be used when following those standards.

General Information

• Status: Historical
• Publication Date: 30-Nov-2011
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 91.120.20 - Acoustics in building. Sound insulation
• Technical Committee: E33 - Building and Environmental Acoustics
• Drafting Committee: E33.07 - Definitions and Editorial

Relations

• Replaces: ASTM C634-10a - Standard Terminology Relating to Building and Environmental Acoustics
• Effective Date: 01-Dec-2011
• Replaced By: ASTM C634-13 - Standard Terminology Relating to Building and Environmental Acoustics
• Effective Date: 01-Sep-2013
• Referred By: ASTM E1124-10(2016) - Standard Test Method for Field Measurement of Sound Power Level by the Two-Surface Method
• Effective Date: 01-Dec-2011
• Referred By: ASTM E1130-16(2021) - Standard Test Method for Objective Measurement of Speech Privacy in Open Plan Spaces Using Articulation Index
• Effective Date: 01-Dec-2011
• Referred By: ASTM F1334-18 - Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners
• Effective Date: 01-Dec-2011
• Referred By: ASTM E1574-98(2023) - Standard Test Method for Measurement of Sound in Residential Spaces
• Effective Date: 01-Dec-2011
• Referred By: ASTM C522-03(2022) - Standard Test Method for Airflow Resistance of Acoustical Materials
• Effective Date: 01-Dec-2011
• Referred By: ASTM E1111/E1111M-14(2022) - Standard Test Method for Measuring the Interzone Attenuation of Open Office Components
• Effective Date: 01-Dec-2011
• Referred By: ASTM E1222-22 - Standard Test Method for Laboratory Measurement of the Insertion Loss of Pipe Lagging Systems
• Effective Date: 01-Dec-2011
• Referred By: ASTM E2249-19 - Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Building Partitions and Elements Using Sound Intensity
• Effective Date: 01-Dec-2011
• Referred By: ASTM E1050-19 - Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System
• Effective Date: 01-Dec-2011
• Referred By: ASTM C1482-23 - Standard Specification for Polyimide Flexible Cellular Thermal and Sound Absorbing Insulation
• Effective Date: 01-Dec-2011
• Referred By: ASTM F2544-11(2018) - Standard Test Method for Determining A-Weighted Sound Power Level of Central Vacuum Power Units
• Effective Date: 01-Dec-2011
• Referred By: ASTM E1007-21 - Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures
• Effective Date: 01-Dec-2011
• Referred By: ASTM E336-23 - Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
• Effective Date: 01-Dec-2011

Standards Content (Sample)

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: C634 − 11
StandardTerminology Relating to
1
Building and Environmental Acoustics
This standard is issued under the fixed designation C634; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
In some of the entries, those that are measures of physical quantities, the term is followed by three
items: symbol, dimensions, and unit. The symbol, in italics, stands for the magnitude of the quantity
in mathematical expressions. The dimensions of a quantity express its measure in terms of three
fundamental quantities: M for mass, L for length, and T for time. Speed, for instance, is the quotient
obtained when the distance an object moves is divided by the time involved. The dimensions are
−1
[LT ], the negative exponent indicating division. The unit is consistently in SI, Le Système
Internationald’Unités.Thosestillusingthecgs(centimetre-gram-second)ortheinchpoundsystemof
units are referred for most of the conversion factors to IEEE/ASTM SI 10.Afew conversion factors
are listed in Section 4 of this terminology.
Thedimensionsofaquantityarethesameregardlessoftheunitsinwhichthequantityismeasured.
−1
Speed has the dimensions [LT ] whether it is measured in miles per hour, feet per second, or metres
per second. Quantities with different dimensions are not the same. Flow resistance and specific flow
resistance, for instance, are quantities of different kinds even though the names are similar. On the
other hand, quantities with the same dimensions are not necessarily of the same kind. Sound energy
−1 −2
density, for instance, has the same dimensions as sound pressure, [ML T ], but it is not a kind of
2
sound pressure. Nor is absorption with the dimensions [L ] a kind of area.
1. Scope C367Test Methods for Strength Properties of Prefabricated
Architectural Acoustical Tile or Lay-In Ceiling Panels
1.1 This terminology covers terms and definitions related to
C384Test Method for Impedance andAbsorption ofAcous-
environmental acoustics. Only definitions common to two or
tical Materials by Impedance Tube Method
more standards under the jurisdiction of Committee E33 are
C522Test Method for Airflow Resistance of Acoustical
listed here. The purpose of this terminology is to promote
Materials
uniformity of key definitions. Definitions pertinent to only one
C634Terminology Relating to Building and Environmental
standard and exceptions to the definitions listed below are
Acoustics
contained in the individual standards and should be used when
C635Specification for the Manufacture, Performance, and
following those standards.
Testing of Metal Suspension Systems for Acoustical Tile
and Lay-in Panel Ceilings
2. Referenced Documents
C636Practice for Installation of Metal Ceiling Suspension
2
2.1 ASTM Standards:
Systems for Acoustical Tile and Lay-In Panels
C423TestMethodforSoundAbsorptionandSoundAbsorp-
C667Specification for Prefabricated Reflective Insulation
tion Coefficients by the Reverberation Room Method
Systems for Equipment and Pipe Operating at Tempera-
tures above Ambient Air
1
This terminology is under the jurisdiction of ASTM Committee E33 on
C871Test Methods for ChemicalAnalysis of Thermal Insu-
Building and Environmental Acoustics and is the direct responsibility of Subcom-
lationMaterialsforLeachableChloride,Fluoride,Silicate,
mittee E33.07 on Definitions and Editorial.
and Sodium Ions
Current edition approved Dec. 1, 2011. Published January 2012. Originally
E90Test Method for Laboratory Measurement of Airborne
approved in 1969. Last previous edition approved in 2010 as C634–10a. DOI:
10.1520/C0634-11.
Sound Transmission Loss of Building Partitions and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Elements
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
E336Test Method for Measurement of Airborne Sound
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Attenuation between Rooms in Buildings
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C634 − 11
E413Classification for Rating Sound Insulation E1408Test Method for Laboratory Measurement of the
E477Test Method for Measuring Acoustical and Airflow Sound Transmission Loss of Door Panels and Door
3
Performance of Duct Liner Materials and Prefabricated Systems (Withdrawn 2009)
Silencers E1414Test Method for Airborne Sound Attenuation Be-
E492Test Method for Laboratory Measurement of Impact tween Rooms Sharing a Common Ceiling Plenum
Sound Tran
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C634–10a Designation:C634–11
Standard Terminology Relating to
1
Building and Environmental Acoustics
This standard is issued under the fixed designation C634; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
In some of the entries, those that are measures of physical quantities, the term is followed by three
items: symbol, dimensions, and unit. The symbol, in italics, stands for the magnitude of the quantity
in mathematical expressions. The dimensions of a quantity express its measure in terms of three
fundamental quantities: M for mass, L for length, and T for time. Speed, for instance, is the quotient
obtained when the distance an object moves is divided by the time involved. The dimensions are
−1
[LT ], the negative exponent indicating division. The unit is consistently in SI, Le Système
Internationald’Unités.Thosestillusingthecgs(centimetre-gram-second)ortheinchpoundsystemof
units are referred for most of the conversion factors to IEEE/ASTM SI 10.Afew conversion factors
are listed in Section 4 of this terminology.
Thedimensionsofaquantityarethesameregardlessoftheunitsinwhichthequantityismeasured.
−1
Speed has the dimensions [LT ] whether it is measured in miles per hour, feet per second, or metres
per second. Quantities with different dimensions are not the same. Flow resistance and specific flow
resistance, for instance, are quantities of different kinds even though the names are similar. On the
other hand, quantities with the same dimensions are not necessarily of the same kind. Sound energy
−1 −2
density, for instance, has the same dimensions as sound pressure, [ML T ], but it is not a kind of
2
sound pressure. Nor is absorption with the dimensions [L ] a kind of area.
1. Scope
1.1 This terminology covers terms and definitions related to environmental acoustics. Only definitions common to two or more
standardsunderthejurisdictionofCommitteeE33arelistedhere.Thepurposeofthisterminologyistopromoteuniformityofkey
definitions. Definitions pertinent to only one standard and exceptions to the definitions listed below are contained in the individual
standards and should be used when following those standards.
2. Referenced Documents
2
2.1 ASTM Standards:
C423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
C367 Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels
C384 Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method
C522 Test Method for Airflow Resistance of Acoustical Materials
C634 Terminology Relating to Building and Environmental Acoustics
C635 SpecificationfortheManufacture,Performance,andTestingofMetalSuspensionSystemsforAcousticalTileandLay-in
Panel Ceilings
C636 Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels
C667 Specification for Prefabricated Reflective Insulation Systems for Equipment and Pipe Operating at Temperatures above
Ambient Air
C871 Test Methods for Chemical Analysis of Thermal Insulation Materials for Leachable Chloride, Fluoride, Silicate, and
Sodium Ions
E90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
1
This terminology is under the jurisdiction ofASTM Committee E33 on Building and EnvironmentalAcoustics and is the direct responsibility of Subcommittee E33.07
on Definitions and Editorial.
Current edition approved Sept.Dec. 1, 2010.2011. Published December 2010.January 2012. Originally approved in 1969. Last previous edition approved in 2010 as
C634–10a. DOI: 10.1520/C0634-10A.10.1520/C0634-11.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C634–11
E336 Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
E413 Classification for Rating Sound Insulation
E477 Test Method for Measuring Acoustical and Airflow Performance of Duct Liner Materials and Prefabr
...