{"id":197480,"date":"2024-10-19T12:34:11","date_gmt":"2024-10-19T12:34:11","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/asa-s12-54-2011\/"},"modified":"2024-10-25T05:07:45","modified_gmt":"2024-10-25T05:07:45","slug":"asa-s12-54-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/asa\/asa-s12-54-2011\/","title":{"rendered":"ASA S12.54 2011"},"content":{"rendered":"

None<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
15<\/td>\n1 Scope
1.1 General
1.2 Types of noise and noise sources
1.3 Test environment <\/td>\n<\/tr>\n
16<\/td>\n1.4 Measurement uncertainty
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
23<\/td>\n4 Test environment
4.1 General
4.2 Criteria for background noise <\/td>\n<\/tr>\n
26<\/td>\n4.3 Criterion for acoustic adequacy of test environment <\/td>\n<\/tr>\n
27<\/td>\n5 Instrumentation
5.1 General
5.2 Calibration
6 Definition, location, installation, and operation of noise source under test
6.1 General
6.2 Auxiliary equipment <\/td>\n<\/tr>\n
28<\/td>\n6.3 Noise source location
6.4 Mounting of the noise source <\/td>\n<\/tr>\n
29<\/td>\n6.5 Installation and mounting conditions for moving noise sources
6.6 Operation of source during test <\/td>\n<\/tr>\n
30<\/td>\n7 Reference box and measurement surface
7.1 Reference box <\/td>\n<\/tr>\n
31<\/td>\n7.2 Measurement surface <\/td>\n<\/tr>\n
34<\/td>\n8 Determination of sound power levels and sound energy levels
8.1 Microphone positions on the measurement surface <\/td>\n<\/tr>\n
37<\/td>\n8.2 Determination of sound power levels <\/td>\n<\/tr>\n
40<\/td>\n8.3 Determination of sound energy levels <\/td>\n<\/tr>\n
42<\/td>\n8.4 Calculation of apparent directivity indices <\/td>\n<\/tr>\n
43<\/td>\n8.5 Calculation of apparent surface sound pressure level non-uniformity index
8.6 A-weighted sound power level and sound energy level
9 Measurement uncertainty
9.1 Methodology <\/td>\n<\/tr>\n
44<\/td>\n9.2 Determination of . omc
9.3 Determination of . R0 <\/td>\n<\/tr>\n
45<\/td>\n9.4 Typical upper bound values of . R0 <\/td>\n<\/tr>\n
46<\/td>\n9.5 Total standard deviation . tot and expanded measurement uncertainty U
10 Information to be recorded
10.1 General
10.2 Noise source under test <\/td>\n<\/tr>\n
47<\/td>\n10.3 Test environment
ii \u00a9 2011 Acoustical Society of America\u2014All rights reserved.
\n 10.4 Instrumentation
10.5 Acoustical data <\/td>\n<\/tr>\n
48<\/td>\n11 Test report <\/td>\n<\/tr>\n
49<\/td>\nAnnex A (normative) Qualification procedures for the acoustic environment
A.1 General
A.2 Absolute comparison test <\/td>\n<\/tr>\n
50<\/td>\nA.3 Determination of the environmental correction based on room absorption <\/td>\n<\/tr>\n
54<\/td>\nAnnex B (normative) Microphone arrays on a hemispherical measurement surface
B.1 Microphone positions and additional microphone positions <\/td>\n<\/tr>\n
55<\/td>\nB.2 Microphone positions for sources adjacent to two reflecting planes
B.3 Microphone positions for sources adjacent to three reflecting planes <\/td>\n<\/tr>\n
56<\/td>\nB.4 Measurement paths <\/td>\n<\/tr>\n
61<\/td>\nAnnex C (normative) Microphone arrays on a parallelepiped measurement surface
C.1 Microphone positions for sources mounted on one reflecting plane <\/td>\n<\/tr>\n
62<\/td>\nC.2 Microphone positions for sources adjacent to two or three reflecting planes <\/td>\n<\/tr>\n
72<\/td>\nAnnex D (informative) Microphone arrays on a cylindrical measurement surface <\/td>\n<\/tr>\n
76<\/td>\nAnnex E (normative) Calculation of A-weighted sound power levels and A-weighted sound energy levels
\n from frequency band levels
E.1 A-weighted sound power levels
E.2 A-weighted sound energy levels
E.3 Values of k and Ck for use in calculations <\/td>\n<\/tr>\n
79<\/td>\nAnnex F (normative) Alternative microphone array on a hemispherical measurement surface for direct
\n measurements of A-weighted sound pressure levels
F.1 General
F.2 Microphone positions on the measurement surface <\/td>\n<\/tr>\n
82<\/td>\nAnnex G (normative) Sound power level and sound energy level under reference meteorological
\n conditions <\/td>\n<\/tr>\n
84<\/td>\nAnnex H (informative) Guidelines on the development of information on measurement uncertainty
H.1 General
H.2 Considerations on the total standard deviation . tot
H.3 Considerations on . omc <\/td>\n<\/tr>\n
86<\/td>\nH.4 Considerations on . R0 <\/td>\n<\/tr>\n
95<\/td>\nH.5 Combined standard uncertainty
H.6 Measurement uncertainty based on reproducibility data <\/td>\n<\/tr>\n
96<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ANSI\/ASA S12.54-2011 \/ ISO 3744:2010 (R2016) American National Standard Acoustics – Determination of sound power levels and sound energy levels of noise sources using sound pressure – Engineering methods for an essentially free field over a reflecting plane (a nationally adopted international standard). This standard replaces ANSI S12.34-1988<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASA<\/b><\/a><\/td>\n2011<\/td>\n100<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":197482,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2652],"product_tag":[],"class_list":{"0":"post-197480","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-asa","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/197480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/197482"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=197480"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=197480"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=197480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}