ASA S1 42-2001 American National Standard Design Response of Weighting Networks for Acoustical Measurements《声学量度计权网络设计》.pdf
《ASA S1 42-2001 American National Standard Design Response of Weighting Networks for Acoustical Measurements《声学量度计权网络设计》.pdf》由会员分享,可在线阅读,更多相关《ASA S1 42-2001 American National Standard Design Response of Weighting Networks for Acoustical Measurements《声学量度计权网络设计》.pdf(29页珍藏版)》请在麦多课文档分享上搜索。
1、AMERICAN NATIONAL STANDARDDESIGN RESPONSE OF WEIGHTINGNETWORKSFOR ACOUSTICAL MEASUREMENTSAccredited Standards Committee S1, AcousticsStandards SecretariatAcoustical Society of America35 Pinelawn Road, Suite 114EMelville, New York 11747-3177ANSI S1.42-2001ANSIS1.42-2001The American National Standards
2、 Institute, Inc. (ANSI) is the na-tional coordinator of voluntary standards development and the clear-inghouse in the U.S. for information on national and internationalstandards.The Acoustical Society of America (ASA) is an organization of sci-entists and engineers formed in 1929 to increase and dif
3、fuse theknowledge of acoustics and to promote its practical applications.American National StandardDesign Response of Weighting Networksfor Acoustical MeasurementsSecretariatAcoustical Society of AmericaApproved 22 October 2001American National Standards Institute, Inc.AbstractThis Standard provides
4、 the design criteria for both the frequency-domain response (amplitude and phase)and time-domain of the A- and C-weighting networks used in acoustically related measurements. The polesand zeros for each weighting network are given, along with equations for computing the amplitude andphase responses
5、as functions of frequency and impulse and step responses as functions of time. Otherknown weighting networks that had been standardized, such as the B-, D- and E-weightings, or weightingsthat were published in the past, are listed in the Annexes for reference.ANSI S1.42-2001AMERICAN NATIONAL STANDAR
6、DS IN ACOUSTICSThe Acoustical Society of America (ASA) provides the Secretariat for AccreditedStandards Committees S1 on Acoustics, S2 on Mechanical Vibration and Shock,S3 on Bioacoustics, and S12 on Noise. These committees have wide represen-tation from the technical community (manufacturers, consu
7、mers, and general-interest representatives). The standards are published by the Acoustical Society ofAmerica through the American Institute of Physics as American National Stan-dards after approval by their respective standards committees and the AmericanNational Standards Institute.These standards
8、are developed and published as a public service to providestandards useful to the public, industry, and consumers, and to Federal, State, andlocal governments.Each of the Accredited Standards Committees, operating in accordance with pro-cedures approved by American National Standards Institute (ANSI
9、), is responsiblefor developing, voting upon, and maintaining or revising its own standards. TheASA Standards Secretariat administers committee organization and activity, andprovides liaison between the Accredited Standards Committees and ANSI. Afterthe standards have been produced and adopted by th
10、e Accredited StandardsCommittees, and approved as American National Standards by ANSI, the ASAStandards Secretariat arranges for their publication and distribution.An American National Standard implies a consensus of those substantially con-cerned with its scope and provisions. Consensus is establis
11、hed when, in thejudgment of the ANSI Board of Standards Review, substantial agreement hasbeen reached by directly and materially affected interests. Substantial agreementmeans much more than a simple majority, but not necessarily unanimity. Consen-sus requires that all views and objections be consid
12、ered, and that a concertedeffort be made toward their resolution.The use of American National Standards is completely voluntary. Their existencedoes not in any respect preclude anyone, whether he has approved the standardsor not, from manufacturing, marketing, purchasing, or using products, processe
13、s,or procedures not conforming to the standards.CAUTION NOTICE: This American National Standard may be revised or with-drawn at any time. The procedures of the American National Standards Instituterequire that action be taken periodically to reaffirm, revise, or withdraw a standard.Standards Secreta
14、riatAcoustical Society of America35 Pinelawn Rd. Suite 114EMelville, New York 11747USATelephone: 11 631 390-0215Telefax: 11 631 390-0217E-mail: asastdsaip.orgInternet: http:/asa.aip.org 2001 by the Acoustical Society of America. This standard may not be reproduced in wholeor in part in any form for
15、sale, promotion, or any commercial purpose, or any purpose notfalling within the provisions of the Copyright Act of 1976, without prior written permission ofthe publisher. For permission, address a request to the Standards Secretariat of the Acous-tical Society of America. ContentsPageForeword . iii
16、1 Scope . 12 Normative references . 12.1 American National Standards 12.2 International Standards . 13 Frequency-weighting characteristics 13.1 Frequency domain 14 Time-domain characteristics . 44.1 Time domain . 4AnnexesA Other weighting networks . 6B G-weighting network for infrasound measurements
17、 . 11B.1 G-weighting network 11C U-weighting network for measurement of audiblesound in the presence of ultrasound 13C.1 U-weighting network 13D Bibliography . 14Figures1 Relative amplitude response level of the A- and C-weightingnetworks to a steady-state sinusoid. 32 Phase response of the A- and C
18、-weighting network to asteady-state sinusoid. . 43 Time-domain responses of the A- and C-weighting networksto an impulse (delta function). 5A1 Relative amplitude response level of the B-, D- and E-weightingnetworks to a steady-state sinusoid. 6A2 Phase response of the B-, D- and E-weighting networks
19、 toa steady-state sinusoid. . 8B1 Relative amplitude response level of the G-weighting network toa steady-state sinusoid. . 12C1 Relative amplitude response level of the U-weighting networksto a steady-state sinusoid . 14Tables1 Poles, zeros, and normalization constants of the transferfunctions for
20、the A-, and C-weighting networks . 12 Relative amplitude response level (re: response at 1000 Hz)and phase response of the A-, and C-weighting networks toa steady-state sinusoid. Band numbers and nominal (orpreferred) frequencies are as specified in ANSI S1.6-1984.Exact frequencies, shown to four si
21、gnificant figures, aregiven by 100.1N, where N is the integer band number 23 Coefficients for the impulse responses of the A-, andC-weighting networks . 4iA1 Relative amplitude response level (re: response at 1000 Hz)and phase response of the B-weighting networks to asteady-state sinusoid. Band Numb
22、ers and nominal(or preferred) frequencies are as specified in ANSIS1.6-1984. Exact frequencies, shown to four significantfigures, are given by 100.1N, where N is the integer bandnumber. . 7A2 Poles, zeros, and normalization constants of the transferfunctions for the B-, D- and E-weighting networks.
23、. 8A3 Relative amplitude response level (re: response at 1000 Hz)and phase response of the D- and E-weighting networks toa steady-state sinusoid. Band numbers and nominal(or preferred) frequencies are as specified in ANSI S1.6-1984.Exact frequencies, shown to four significant figures, are givenby 10
24、0.1N, where N is the integerband number. 9A4 Coefficients for the impulse responses of the D- and E-weighting networks. . 10B1 Nominal coordinates of the poles and zeros of the transferfunction, in the complex frequency plane 11B2 Poles, zeros, and normalization constants of the transferfunctions fo
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASAS1422001AMERICANNATIONALSTANDARDDESIGNRESPONSEOFWEIGHTINGNETWORKSFORACOUSTICALMEASUREMENTS 声学 量度 网络
链接地址:http://www.mydoc123.com/p-450374.html