ASTM E1130-08
(Test Method)Standard Test Method for Objective Measurement of Speech Privacy in Open Plan Spaces Using Articulation Index
Standard Test Method for Objective Measurement of Speech Privacy in Open Plan Spaces Using Articulation Index
SIGNIFICANCE AND USE
The speech privacy between locations in an open plan space is determined by the degree to which intruding speech sounds exceed the ambient sound pressure levels at the listener's ear; a classic signal-to-noise ratio situation.
The sound pressure levels at the listener's ear from intruding speech depend upon:
The individual vocal effort and orientation of the talker,
The attenuation of speech signals due to distance or intervening barriers, and
The reinforcement of speech signals due to reflections from surfaces such as the ceiling, furniture panels, light fixtures, walls, or windows.
The ambient sound pressure levels will often be controlled to mask intruding speech. This is accomplished by means of a masking sound system. However, in certain positions and frequency ranges, heating, ventilating, or air conditioning equipment (HVAC) may contribute significantly to ambient sound pressure levels.
The primary purpose of this test method is to measure the speech privacy for an average speech spectrum using the standard Articulation Index method. This requires measurement of the relevant acoustical characteristics discussed in 5.2 and 5.3 for a pair of locations and calculation of the Articulation Index using an average speech spectrum. The average speech spectrum is for male talkers speaking with normal voice effort.
The Articulation Index ranges from 0.00, where speech is unintelligible, to 1.00, where all individual spoken words can be understood. Caution should be exercised in interpreting the numerical results of this test method. There is a need for further research to establish the relationship of Articulation Index to speech privacy. One purpose of this test method is to encourage the measurement of data and further research on this topic perhaps leading to development of well-documented speech privacy categories and criteria.
This test method can be used to:
Compare the relative privacy afforded between different locations within open plan spa...
SCOPE
1.1 This test method describes a means of measuring speech privacy objectively between locations in open plan spaces. This test method relies upon acoustical measurements, published information on speech levels, and standard methods for assessing speech communication. This test method does not measure the performance of individual open plan components which affect speech privacy; it measures the privacy which results from a particular configuration of components (1, 2).
1.2 This test method is intended to be a field test for the measurement of speech privacy in actual open plan spaces. However, this test method could be used in an environment arranged to simulate an open plan space.
1.3 This test method is suitable for use in many open plan spaces such as open plan offices, healthcare spaces, institutional spaces, schools, etc. It is not applicable for measuring the speech privacy between open plan and enclosed spaces or between fully enclosed spaces.
1.4 This test method relies upon the Articulation Index, which objectively predicts the intelligibility of speech. While both the Articulation Index and this test method can be expected to reliably predict average speech privacy, neither predicts the specific degree of speech privacy afforded to particular open plan occupants.
1.5 The values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are for information only.
1.6 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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Buy Standard
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: E1130 − 08
Standard Test Method for
Objective Measurement of Speech Privacy in Open Plan
1
Spaces Using Articulation Index
This standard is issued under the fixed designation E1130; 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.
INTRODUCTION
This is one of a series of test methods for evaluating speech privacy in buildings. It is designed to
measure the degree of speech privacy between locations in open plan spaces, where occupants are
separated only by partial-height partitions and furnishings. Another proposed test method deals with
assessing speech privacy for closed rooms. A related test method deals with the laboratory
measurement of interzone attenuation open plan components intended to provide speech privacy, such
as partial height space dividers, ceiling systems and wall finishes.
1. Scope 1.5 The values stated in SI units are to be regarded as the
standard. The inch-pound units in parentheses are for informa-
1.1 Thistestmethoddescribesameansofmeasuringspeech
tion only.
privacy objectively between locations in open plan spaces.
1.6 This standard does not purport to address all of the
This test method relies upon acoustical measurements, pub-
safety concerns, if any, associated with its use. It is the
lished information on speech levels, and standard methods for
responsibility of the user of this standard to establish appro-
assessing speech communication. This test method does not
priate safety and health practices and determine the applica-
measure the performance of individual open plan components
bility of regulatory limitations prior to use.
which affect speech privacy; it measures the privacy which
2
results from a particular configuration of components (1, 2).
2. Referenced Documents
1.2 This test method is intended to be a field test for the
3
2.1 ASTM Standards:
measurement of speech privacy in actual open plan spaces.
C634 Terminology Relating to Building and Environmental
However, this test method could be used in an environment
Acoustics
arranged to simulate an open plan space.
E1179 Specification for Sound Sources Used for Testing
1.3 This test method is suitable for use in many open plan
Open Office Components and Systems
spaces such as open plan offices, healthcare spaces, institu-
4
2.2 ANSI Standards:
tional spaces, schools, etc. It is not applicable for measuring
S1.4 Specification for Sound Level Meters
the speech privacy between open plan and enclosed spaces or
S1.6 Preferred Frequencies, Frequency Levels, and Band
between fully enclosed spaces.
Numbers for Acoustical Measurements
1.4 This test method relies upon the Articulation Index,
S1.11 Specification for Octave-Band, and Fractional-
which objectively predicts the intelligibility of speech. While
Octave-band Analog and Digital Filters
both the Articulation Index and this test method can be
3. Terminology
expected to reliably predict average speech privacy, neither
predicts the specific degree of speech privacy afforded to
3.1 Definitions—The acoustical terminology used in this
particular open plan occupants.
test method is consistent with Terminology C634. Of special
importance are the terms average sound pressure level and
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE33onBuilding
3
and Environmental Acoustics and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
E33.02 on Speech Privacy. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Sept. 1, 2008. Published September 2008. Originally Standards volume information, refer to the standard’s Document Summary page on
ε1
approved in 1986. Last previous edition approved in 2002 as E1130 – 02 . DOI: the ASTM website.
4
10.1520/E1130-08. Available from American National Standards Institute, 11 W. 42nd St., 13th
2
The boldface numbers in parentheses refer to the list of references at the end of Floor, New York, NY 10036.Available from American National Standards Institute
this test method. (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1130 − 08
arithmetic mean sound pressure level, both of which are and (5)) must be used; optionally, additional spectra may be
defined in Terminology C634, and source point which is used.
defined in Specification E1179.
4.8 Calculate the one-third octave-band sound pressure
levels for the speech spectrum at the
...
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.
´1
Designation:E1130–02 Designation:E1130–08
Standard Test Method for
Objective Measurement of Speech Privacy in Open
1
OfficesPlan Spaces Using Articulation Index
This standard is issued under the fixed designation E 1130; 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
´ NOTE—Footnote 4 was added editorially in March 2002.
INTRODUCTION
This is one of a series of test methods for evaluating the acoustical characteristics of open office
environments and the performance of acoustical components. Other proposed test methods in this
series deal with the laboratory measurement of interzone attenuation of partial height space dividers
and ceiling systems.
This is one of a series of test methods for evaluating speech privacy in buildings. It is designed to
measure the degree of speech privacy between locations in open plan spaces, where occupants are
separated only by partial-height partitions and furnishings. Another proposed test method deals with
assessing speech privacy for closed rooms. A related test method deals with the laboratory
measurement of interzone attenuation open plan components intended to provide speech privacy, such
as partial height space dividers, ceiling systems and wall finishes.
1. Scope
1.1 This test method describes a means of measuring speech privacy objectively between locations in open offices. plan spaces.
This test method relies upon acoustical measurements, published information on speech levels, and standard methods for assessing
speech communication.This test method does not measure the performance of individual open officeplan components which affect
2
speech privacy; it measures the privacy which results from a particular configuration of components (1, 2).
1.2 This test method is intended to be a field test for the measurement of speech privacy in actual open offices. plan spaces.
However, this test method could be used in an environment arranged to simulate an open office. plan space.
1.3 This test method could be adapted is suitable for use in othermany open plan spaces such as open plan schools. It could also
be adapted offices, healthcare spaces, institutional spaces, schools, etc. It is not applicable for measuring the speech privacy
between open plan and enclosed spaces or between fully enclosed spaces.
1.4 This test method relies upon the Articulation Index, which objectively predicts the intelligibility of speech for a group of
talkers and listeners. speech. While both the Articulation Index and this test method can be expected to reliably predict average
speech privacy, neither predicts the specific degree of speech privacy afforded to particular open officeplan occupants.
1.5 ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsinparenthesesareforinformationonly.
1.6 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards: C384Test Method for Impedance andAbsorption ofAcoustical Materials by the Impedance Tube Method
3
C 634Terminology Relating to Environmental Acoustics
E1041Guide for Measurement of Masking Sound in Open Offices Terminology Relating to Building and Environmental
Acoustics
1
This test method is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.02
on Open Plan Spaces.
Current edition approved March 13, 2002. Published February 2002. Originally published as E1130–86. Last previous edition E1130–90 (1994)
´1
Current edition approved Sept. 1, 2008. Published September 2008. Originally approved in 1986. Last previous edition approved in 2002 as E 1130 – 02 .
2
The boldface numbers in parentheses refer to the list of references at the end of this test method.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 04.06.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 19428-295
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.