{"id":197485,"date":"2024-10-19T12:34:12","date_gmt":"2024-10-19T12:34:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/asa-s12-57-2011\/"},"modified":"2024-10-25T05:07:47","modified_gmt":"2024-10-25T05:07:47","slug":"asa-s12-57-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/asa\/asa-s12-57-2011\/","title":{"rendered":"ASA S12.57 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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
13<\/td>\n1 Scope
1.1 General
1.2 Types of noise and noise sources
1.3 Test environment
1.4 Measurement uncertainty <\/td>\n<\/tr>\n
14<\/td>\n2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
18<\/td>\n4 Test environment
4.1 Criterion for acoustic adequacy of test environment
4.2 Criterion for background noise <\/td>\n<\/tr>\n
19<\/td>\n5 Instrumentation and measurement equipment
5.1 General
5.2 Calibration
6 Location, installation and operation of noise source under test
6.1 Source location and installation <\/td>\n<\/tr>\n
20<\/td>\n6.2 Auxiliary equipment
6.3 Operation of source during test
7 Measurement procedure
7.1 General <\/td>\n<\/tr>\n
21<\/td>\n7.2 Characterization of noise source under test
7.3 Locations of the reference sound source <\/td>\n<\/tr>\n
22<\/td>\n7.4 Microphone positions <\/td>\n<\/tr>\n
23<\/td>\n7.5 Measurement of sound pressure levels for a noise source which emits steady or nonsteady
\n noise <\/td>\n<\/tr>\n
24<\/td>\n7.6 Measurement of sound pressure levels for a noise source which emits impulsive noise
8 Calculation of sound power levels and sound energy levels
8.1 Corrections for background noise <\/td>\n<\/tr>\n
25<\/td>\n8.2 Mean time-averaged sound pressure levels for a noise source which emits steady or
\n non-steady noise <\/td>\n<\/tr>\n
26<\/td>\n8.3 Sound power levels
8.4 Mean single event sound pressure level for a noise source which emits impulsive noise <\/td>\n<\/tr>\n
28<\/td>\n8.5 Sound energy levels
8.6 A-weighted sound power level and A-weighted sound energy level
9 Measurement uncertainty
9.1 Methodology <\/td>\n<\/tr>\n
29<\/td>\n9.2 Determination of .omc <\/td>\n<\/tr>\n
30<\/td>\n9.3 Determination of .R0 <\/td>\n<\/tr>\n
31<\/td>\n9.4 Typical upper bound values of .R0 <\/td>\n<\/tr>\n
32<\/td>\n9.5 Total standard deviation, .tot, and expanded uncertainty, U
10 Information to be recorded
10.1 General
ii \u00a9 2011 Acoustical Society of America\u2014All rights reserved.
\n 10.2 Noise source under test
10.3 Test environment <\/td>\n<\/tr>\n
33<\/td>\n10.4 Instrumentation
10.5 Acoustic data <\/td>\n<\/tr>\n
34<\/td>\n11 Test report <\/td>\n<\/tr>\n
35<\/td>\nAnnex A (normative) Evaluation of the excess of sound pressure level at a given distance <\/td>\n<\/tr>\n
36<\/td>\nAnnex B (informative) Recommendations for the location of the reference sound source and the
\n microphones, if only one position is used for the reference sound source
B.1 General
B.2 Recommendation 1 <\/td>\n<\/tr>\n
38<\/td>\nB.3 Recommendation 2 <\/td>\n<\/tr>\n
39<\/td>\nB.4 Recommendation 3
B.5 Recommendation 4 <\/td>\n<\/tr>\n
41<\/td>\nAnnex C (normative) Sound power level and sound energy level under reference meteorological
\n conditions <\/td>\n<\/tr>\n
43<\/td>\nAnnex D (normative) Calculation of A-weighted sound power levels and A-weighted sound energy levels
\n from octave-band levels
D.1 A-weighted sound power levels
D.2 A-weighted sound energy levels
D.3 Values of k and Ck for use in calculations <\/td>\n<\/tr>\n
45<\/td>\nAnnex E (informative) Guidance on the development of information on measurement uncertainty
E.1 General
E.2 Considerations on the total standard deviation, .tot <\/td>\n<\/tr>\n
46<\/td>\nE.3 Considerations on .omc <\/td>\n<\/tr>\n
47<\/td>\nE.4 Considerations on .R0 <\/td>\n<\/tr>\n
56<\/td>\nE.5 Combined standard uncertainty
E.6 Measurement uncertainty based on reproducibility data <\/td>\n<\/tr>\n
57<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ANSI\/ASA S12.57-2011 \/ ISO 3747:2010 (R2016) American National Standard Acoustics – Determination of sound power levels and sound energy levels of noise sources using sound pressure – Engineering\/survey methods for use in situ in a reverberant environment (a nationally adopted international standard)<\/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>\n60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":197489,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2652],"product_tag":[],"class_list":{"0":"post-197485","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\/197485","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\/197489"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=197485"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=197485"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=197485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}