ASA-S12.23-1989-R2006.pdf
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1、ANSI S12.23-1989 (ASA 83-1989) 10 July 2001 I I I Reaffirmed by ANSI I I on 3 Mav2006 I AMERICAN NATIONAL STANDARD Method for the Designation of Sound Power Emitted by Machinery and Equipment ACCREDITED STANDARDS COMMITTEE S12, NOISE ABSTRACT This Standard describes a method for expressing the noise
2、 emission of machinery and equipment in a convenient manner. This Standard applies to all machinery and equip- ment that is essentially stationary in nature and for which overall A-weighted sound power is a meaningful descriptor of noise emission. This Standard is intended to facili- tate preparatio
3、n of equipment specifications, labels, or other documentation that ex- presses in quantitative terms the noise emission of machinery or equipment. Copyright Acoustical Society of America Provided by IHS under license with ASA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18
4、/2007 11:47:34 MDTNo reproduction or networking permitted without license from IHS -,-,- AMERICAN NATIONAL STANDARDS ON ACOUSTICS The Acoustical Society of America provides the Secretariat for Accredited Standards Committees S1 on Acoustics, S2 on Mechanical Shock and Vibration, S3 on Bio- acoustics
5、, and S12 on Noise. These committees have wide representation from the technical community (manufacturers, consumers, and general-interest representa- tives). The standards are published by the Acoustical Society of America through the American Institute of Physics as American National Standards aft
6、er approval by their respective standards committees and the American National Standards Institute. These standards are developed and published as a public service to provide stan- dards useful to the public, industry, and consumers, and to Federal, State, and local governments. This standard was ap
7、proved by the American National Standards Institute as ANSI S12.23-1989 on 13 October 1989. An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, an
8、d the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, market- ing, purchasing, or using products, processes, or procedures not conforming to the standard. Ameri- can National Stan
9、dards are subject to periodic review and users are cautioned to obtain the latest editions. Caution Nolice: An American National Standard may be revised or withdrawn at any time. The proce- dures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdr
10、aw this standard no later than five years from the date of publication. The American National Standards Institute, Inc. (ANSI) is the national coordinator of voluntary standards development and the clearinghouse in the U.S. for information on national and international standards. The Acoustical Soci
11、ety of America (ASA) is an organization of scientists and engineers formed in 1929 to increase and diffuse the knowledge of acoustics and to promote its practical applications. Published by the Acoustical Society of America through the American Institute of Physics. Copyright 1989 by the Acoustical
12、Society of America. No portion of this publication may be quoted or reproduced in any form without permission of the Acoustical Society of America. Any request to reproduce this standard in whole or in part should be addressed to the Standards Secretariat, in care of the Acoustical Society of Americ
13、a, 335 East 45th Street, New York, New York 1 O01 7-3483 Copyright Acoustical Society of America Provided by IHS under license with ASA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 11:47:34 MDTNo reproduction or networking permitted without license from IHS -,-,- T
14、his Foreword is for information only, and is not part of American National Standard Method for the Designation of Sound Power Emitted by Machinery and Equipment, ANSI S12.23-1969. This Standard revises and supersedes American National Standard ANSI S1.23-1976 (K 19831, American National Standard Met
15、hod for the Designation of Sound Power Level of Machinery and Equipment, and American National Standard ANSI S3.17- 1975 (R 1980), American National Standard Method for Rating the Sound Power Spectrum of Small Stationary Noise Sources. ANSI S1.23 standardized the term Noise Power Emission Level (NPE
16、L) to designate the A-weighted sound level in bels. ANSI S3.17 used the sound power level of the source to calculate the average A-weighted sound pressure level at a distance of 1 meter. Since ANSI S1.23 is more widely used than ANSI S3.17, the present Standard is based primarily on S1.23. The proce
17、dures of S3.17, which have not been widely used for designation of the noise emission of sources, are included in an appendix. International Standard IS0 4871 specifies the unit of the A-weighted sound power level as the decibel but also permits the reporting of the sound power level divided by ten
18、(.e., the sound power level in bels). In this Standard, the term Noise Power Emis- sion Level (NPEL) is used, and the levels are reported in bels. This practice is consistent with American National Standard Y10.11-1984, Letter Symbols and Appreviations Used in Acoustics. This Standard has been devel
19、oped under the jurisdiction of Accredited Standards Committee S12 using the American National Standards Institute (ANSI) Standards Committee Procedures. The Acoustical Society of America holds the Secretariat for Accredited Standards Committee S12. Accredited Standards Committee S12 has the followin
20、g scope: Standards, specifications, and terminology, in the fields of acoustical noise pertaining to methods of measurement, evaluation, and control, including biological safety, tolerance and comfort, and phys- ical acoustics as related to environmental and occupational noise. At the time this Stan
21、dard was submitted to Standards Committee S12 for approval the membership was as follows: W. Melnick, Chairman R. K. Hillquist, Vice-Chairman A. Brenig, Secretary Acoustical Society of America o W. Melnick, R. K. HiIlquisi (AM Air-Conditioning and Refrigeration Institute o R. Harold, H. C. Skarbek (
22、Ah) Aluminum Assacution o S. I. Roth American Academy of Otolaryngology-Head and Neck Surgery, hi. o R. F. Naunton. L. A. Michael (Air) . III Copyright Acoustical Society of America Provided by IHS under license with ASA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007
23、 11:47:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IV FOREWORD American Industrial Hygiene Association o C. D. Bohl American Occupational Medical Association o T. R. Hatfield, I. Sataloff (Alt) American Otological Society, Inc. o (Vacant) American Society of Heating,
24、 Refrigerating for example, A-weight- ed sound power level, octave band sound power level, one-third oc- tave band sound power level, etc. 4.3 A-Weighted Sound Power level, LWA A-weighted sound power level in decibels. The ref- erence sound power is 1 pW. Unit: decibel (dB). 4.4 Noise Power Emission
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