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1、ANSI S3.37-19 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 12:18:32 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 Commitfee on ftan- A. Brenig, Standards Ma
2、nager W. Melnick, Chairman, ASACOS W, Melnick, Chairman and Standards Director Columbus, Ohio 43210 S2 Representation- 3. C. Barton, Chairman, 5 . 2 W. J. Galloway, Vice Chairman P. H. Maedel, JF., Vice Chairman, BBN Laboratories, inr. P. O. Cox 633 A. Brenig, Standards Manager Acouslicd Society of
3、America Standards Secretariat 335 E . 45th Street R. Silbiger, Vke Chairman, 53 . A. .Yost, ASA Alterna SI2 Representation dards lnsfitute (ANSI) I Copyright Acoustical Society of America Provided by IHS under license with ASA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/1
4、8/2007 12:18:32 MDTNo reproduction or networking permitted without license from IHS -,-,- A S A * b 87 m 011440 O000154 b m ANSI S3.37-1987 (ASA 69-1 987) Standards Secretariat Acoustical Society of America 335 East 45th Street New York, New York 1 O01 7-3483 AMERICAN NATIONAL STANDARD Preferred Ear
5、hook Nozzle Thread for Postauricular Hearing Aids ABSTRACT This standard describes a preferred thread for earhook nozzles on postauricular hear- ing aids. The need for such a standard arises from the wide variety of earhooks that hearing aid dispensers are required to keep in inventory to utilize di
6、fferent postauricu- lar hearing aids from several manufacturers. Published for the Acoustical Society of America by the American Institute of Physics Copyright Acoustical Society of America Provided by IHS under license with ASA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04
7、/18/2007 12:18:32 MDTNo reproduction or networking permitted without license from IHS -,-,- ASA *K69 87 = 0383440 0000355 8 AMERICAN NATIONAL STANDARDS ON ACOUSTICS The Acoustical Society of America holds the Secretariat for Accredited Standards Committees S1 on Acoustics, S2 on Mechanical Shock and
8、 Vibration, S3 on Bioacoustics, and S12 on Noise. Standards developed by these committees, which have wide representation from the techni- cal community (manufacturers, consumers, and general-interest repre- sentatives), are published for the Acoustical Society of America by the American Institute o
9、f Physics as American National Standards after ap- proval by their respective standards committees and the American Na- tional Standards Institute. These standards are developed as a public service to provide standards useful to the public, industry, and consumers, and to Federal, State, and local g
10、overnments. This standard was approved by the American National Standards Institute as ANSI S3.37-1987 on 28 April 1987. An American National Standard implies a consensus of those substantially con- cerned with its scope and provisions. An American National Standard is intended as a guide to aid the
11、 manufacturer, the consumer, and the general public. The exis- tence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, pur- chasing, or using products, processes, or procedures not conforming to the s
12、tan- dard. American National Standards are subject to periodic review and users are cau- tioned to obtain the latest editions. Caution Notice: An American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be tak
13、en to affirm, revise, or withdraw this standard no later than five years from the date of publication. The Acoustical Society 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. T
14、he American National Standards Institute, Inc. (ANSI) is the national coordinator of voluntary standards development and the clearing house in the U.S. for information on national and international ctan- dards. Copyright 0 1987 by the Acoustical Society of America. No portion of this publication may
15、 be quoted or reproduced in any form without permission of the Acoustical Society of America 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 12:18:32 MDTNo reproduction or networking permit
16、ted without license from IHS -,-,- FOREWORD This Foreword is for information only, and is not a part of the American National Stan- dard Preferred Earhook Nozzle Thread for Postauricular Hearing Aids, ANSI 53.37-1 987 (ASA Catalog No. 69-1 987). A postauricular hearing aid normally incorporates a pl
17、astic earhook that is used to couple its output to an earmold. Such plastic earhooks are snapped or screwed onto a nozzle attached to the tip of the hous- ing of the postauricular hearing aid. Due to the finite lifetime of the plastic in the earhooks, hearing aid dispensers are frequently required t
18、o replace these earhooks from time to time should cracking or leaking occur. Earhook nozzles that are threaded have widely incorporated a 5-40 UNC-2A thread. Provision is made in this standard for both the stan- dard 5-40 thread and a modified 5-40 thread without undercut, of which the latter is sai
19、d to help in preventing acoustic leakage. Accredited Standards Committee S3, Bioacoustics, under whose juris- diction this standard was developed, has the following scope: Standards, specifications, methods of measurement and test, and terminology, in the fields of physical acoustics, including arch
20、itectural acoustics, electroacoustics, sonics and ultrasonics, and underwater sound, but excluding those aspects which pertain to safety, tolerance, and comfort. At the time this standard was submitted to Accredited Standards Com- mittee S3 for final approval, the membership was as follows: L. A. Wi
21、lber, Chairman H. Silbiger, Vice-chairman A. Brenig, Secretary Acoustical Society of America o L. A. Wilber, W. A. Yost (Alt) American Academy of Otolaryngology, Head and Neck Surgery, Inc. o R. F. Naun- ton, L. A. Michael (Alt) AT 5-40 UNC- 2A thread (modified). Copyright Acoustical Society of Amer
22、ica Provided by IHS under license with ASA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/18/2007 12:18:32 MDTNo reproduction or networking permitted without license from IHS -,-,- ASA *b 87 m OLBL440 00001b0 I 2 ACOUSTICAL SOC1 ETY OF AM ER ICA STAN DARDS SECRETARIAT The St
23、andards Program of the Acoustical Society of America is the responsibility of the ASAs Committee on Standards (ASACOS) and is executed by ASAs Standards Secretariat headed by its Standards Manager. The Acoustical Society of America holds the Secretariat for four accredited standards committees of th
24、e Ameri- can National Standards Institute (ANSI); S1 on Acoustics, S2 on Mechanical Shock and Vibration, S3 on Bioa- coustics, and S12 on Noise; and provides the United States input to ISO/TC 43 on Acoustics, for which SI and S3 serve as Technical Advisory Groups, and S12 serves as the Technical Adv
25、isory Group for ISO/TC43/SC1 -Noise. ASA also administers the international secretariat of ISO/TC 108 on Mechanical Vibration and Shock (on behalf of the American National Standards Institute) and provides the U.S. input via the Technical Advisory Group for ISO/TC 108, which is Standards Committee S
26、2. (Standards Committee S3 is the Technical Advisory Group for ISO/TC1 08/SC4 Human Exposure to Mechanical Vibration and Shock.) Standards are produced in four broad areas: physical acoustics, mechanical shock and vibration, bioacoustics, and noise, and are reaffirmed or revised every five years. Th
27、e latest information on current ANSI standards as well as those under preparation i s available from the Standards Secretariat. When ordering ANSI S3.37-1987, please also use ASA Catalog No. 69-1987 for easy reference. This standard and other standards listed in the ASA Standards Catalog may be orde
28、red from the following address: Publication Sales, Dept. STD American institute of Physics 335 East 45th Street New York, New York 10017-3483 Telephone: (516) 349-7800 Standards Listed in the ASA Standards Catalog can be ordered by out-of-state customers by calling the Ameri- can Institute of Physic
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30、ard Manager Standards Secretariat Acoustical Society of America 335 East 45th Street New York, New York 10017-3483 Telephone: (212) 661-9404 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
31、12:18:32 MDTNo reproduction or networking permitted without license from IHS -,-,- 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 12:18:32 MDTNo reproduction or networking permitted without license from IHS -,-,-