IEEE Std 269-2002 IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets.pdf
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1、IEEE Std 269-2002 (Revision of IEEE Std 269-1992) IEEE Standards 269 TM IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets Published by The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016
2、-5997, USA 25 April 2003 IEEE Communications Society Sponsored by the Transmission, Access and Optical Systems Committee IEEE Standards Print: SH95056 PDF: SS95056 Authorized licensed use limited to: Tsinghua University Library. Downloaded on December 25,2010 at 10:53:13 UTC from IEEE Xplore. Restri
3、ctions apply. IEEE Std 269TM-2002 (Revision of IEEE Std 269-1992) IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets Sponsor Transmission, Access and Optical Systems Committee of the IEEE Communications Society Approved 8 Novembe
4、r 2002 IEEE-SA Standards Board Abstract:Practical methods for making laboratory measurements of electroacoustic character- istics of analog and digital telephones, handsets, and headsets are provided in this revised standard. The methods may also be applicable to a wide variety of other communicatio
5、ns equipment, including cordless, wireless, and mobile communications devices. Measurement results may be used to evaluate these devices on a standardized basis. Application is in the frequency range 1008500 Hz. Keywords: analog telephones, digital telephones, electroacoustic measurements on telepho
6、nes, handsets, headsets, telephony, voice transmission performance The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright ? 2003 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 25 April 2003. Pri
7、nted in the United States of America. Print: ISBN 0-7381-3477-5SH95056 PDF: ISBN 0-7381-3478-3SS95056 No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. The trademark name, Bell Labs (AT 1
8、978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. 09:34 17/4/03 m:/IEEE Standards/269-2002/269-2002.3dRef:269-2002Page: 21148 Authorized licensed use limited to: Tsinghua University Lib
9、rary. Downloaded on December 25,2010 at 10:53:13 UTC from IEEE Xplore. Restrictions apply. Copyright ? 2003 IEEE. All rights reserved.iii Introduction (This introduction is not a part of IEEE Std 269-2002, IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone S
10、ets, Handsets, and Headsets.) This standard has been prepared in response to a widely expressed need by the telecommunications industry for a standard, comprehensive method for testing the transmission performance of telephone sets, handset, and headsets. The present standard is a revision of IEEE S
11、td 269TM-1992. This revision adds coverage for a wide range of ear simulators and test signals, and incorporates and updates the contents of IEEE Std 1206TM-1994. This revision, begun in 1999, was prepared by the Subcommittee on Telephone Instrument Testing of the Transmission, Access and Optical Sy
12、stems Committee of the IEEE Communications Society. Participants At the time this revised standard was approved, the Subcommittee on Telephone Instrument Testing had the following membership: John Bareham, Chair Glenn Hess, Vice Chair Steve Graham, Secretary Roger BrittDan FoleyRon Magnuson Chandru
13、ButaniHans W. GierlichHenry Mar Rodolfo CerutiDeborah GruenhagenChristopher J. Struck Cliff ChamneyRoger GutzwillerSteve Temme Paul CoverdaleJoe HelmsStephen Whitesell Fred DekalbSoren JonssonAllen Woo Gijs DirksFrederick M. KrugerRobert Young The following members of the balloting committee voted o
14、n this revised standard. Balloters may have voted for approval, disapproval, or abstention. John BarehamSteve GrahamHenry Mar Chandru ButaniDeborah GruenhagenChristopher J. Struck Cliff ChamneyRoger GutzwillerStephen Whitesell Fred DekalbGlenn HessAllen Woo Dan FoleyFrederick M. KrugerRobert Young R
15、on Magnuson 09:34 17/4/03 m:/IEEE Standards/269-2002/269-2002.3dRef:269-2002Page: 31148 Authorized licensed use limited to: Tsinghua University Library. Downloaded on December 25,2010 at 10:53:13 UTC from IEEE Xplore. Restrictions apply. When the IEEE-SA Standards Board approved this standard on 8 N
16、ovember 2002, it had the following membership: James T. Carlo, Chair James H. Gurney, Vice Chair Judith Gorman, Secretary Sid BennettArnold M. GreenspanPeter H. Lips H. Stephen BergerJames H. GurneyNader Mehravari Clyde R. CampRaymond HapemanDaleep C. Mohla Richard DeBlasioDonald M. HeirmanWilliam J
17、. Moylan Harold E. EpsteinRichard H. HulettMalcolm V. Thaden Julian Forster*Lowell G. JohnsonGeoffrey O. Thompson Howard M. FrazierJoseph L. Koepfinger*Howard L. Wolfman Toshio FukudaDon Wright *Member Emeritus Also included is the following nonvoting IEEE-SA Standards Board liaisons: Alan Cookson,
18、NIST Representative Satish K. Aggarwal, NRC Representative Savoula Amanatidis IEEE Standards Managing Editor ivCopyright ? 2003 IEEE. All rights reserved. 09:34 17/4/03 m:/IEEE Standards/269-2002/269-2002.3dRef:269-2002Page: 41148 Authorized licensed use limited to: Tsinghua University Library. Down
19、loaded on December 25,2010 at 10:53:13 UTC from IEEE Xplore. Restrictions apply. Contents 1.Overview.1 1.1Scope1 1.2Purpose 2 1.3Contents of standard .2 2.References 2 3. Defi nitions4 4.Abbreviations, acronyms, and symbols .7 4.1Abbreviations and acronyms .7 4.2Symbols8 5.Test equipment and setup9
20、5.1Ear simulators9 5.1.1Selection9 5.1.2Headset measurements made on ear simulators compared to real ears.10 5.1.3Translation from DRP to ERP10 5.2Mouth simulators.10 5.3 Test fi xtures11 5.3.1Selection11 5.3.2Handset positioning11 5.3.3Headset positioning 13 5.4Measurement microphones15 5.5Test env
21、ironment .15 5.5.1Background noise level.15 5.5.2 Refl ection-free conditions.16 5.5.3 Diff use fi eld conditions.16 5.6Acoustic impairments.17 5.6.1Reference corner.17 5.6.2Hoth room noise.17 Copyright ? 2003 IEEE. All rights reserved.v 09:34 17/4/03 m:/IEEE Standards/269-2002/269-2002.3dRef:269-20
22、02Page: 51148 Authorized licensed use limited to: Tsinghua University Library. Downloaded on December 25,2010 at 10:53:13 UTC from IEEE Xplore. Restrictions apply. 6.Calibration .18 6.1General.18 6.2Electrical measurement instruments.18 6.3Measurement microphones18 6.4Ear simulator .18 6.5Measuremen
23、t bandwidth and resolution .18 6.6Electrical test signals18 6.6.1Electrical test spectrum.19 6.6.2Electrical test level19 6.7Mouth simulator19 6.7.1Acoustic test spectrum19 6.7.2Acoustic test level.20 6.7.3Mouth simulator calibration procedure .20 7.Test procedure for analog sets.21 7.1General.21 7.
24、1.1Choice of test signals and levels.21 7.1.2Measurement bandwidth and resolution22 7.1.3Choice of ear and mouth simulators and test position22 7.1.4Tone control setting22 7.1.5Reference receive volume control setting .22 7.1.6Reference send gain control setting22 7.2Analog DC feed circuits 22 7.3An
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