{"id":390487,"date":"2024-10-20T03:54:56","date_gmt":"2024-10-20T03:54:56","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-26101-12021-tc\/"},"modified":"2024-10-26T07:13:29","modified_gmt":"2024-10-26T07:13:29","slug":"bs-iso-26101-12021-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-26101-12021-tc\/","title":{"rendered":"BS ISO 26101-1:2021 – TC"},"content":{"rendered":"

This document specifies methodology for qualifying acoustic spaces as anechoic and hemi-anechoic spaces meeting the requirements of a free sound field.<\/p>\n

This document specifies discrete-frequency and broad-band test methods for quantifying the performance of anechoic and hemi-anechoic spaces, defines the qualification procedure for an omni-directional sound source suitable for free-field qualification, gives details of how to present the results and describes uncertainties of measurement.<\/p>\n

This document has been developed for qualifying anechoic and hemi-anechoic spaces for a variety of acoustical measurement purposes. It is expected that, over time, various standards and test codes will refer to this document in order to qualify an anechoic or hemi-anechoic space for a particular measurement. Annex D<\/span> provides guidelines for the specification of test parameters and qualification criteria for referencing documents.<\/p>\n

In the absence of specific requirements or criteria, Annex A<\/span> provides qualification criteria and measurement requirements to qualify anechoic and hemi-anechoic spaces for general purpose acoustical measurements.<\/p>\n

This document describes the divergence loss method for measuring the free sound field performance of an acoustic environment.<\/p>\n

PDF Catalog<\/h4>\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
32<\/td>\nNational foreword <\/td>\n<\/tr>\n
36<\/td>\nForeword <\/td>\n<\/tr>\n
37<\/td>\nIntroduction <\/td>\n<\/tr>\n
39<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
40<\/td>\n4 Allowable deviations from inverse square law <\/td>\n<\/tr>\n
41<\/td>\n5 Measurement of free sound field performance
5.1 Divergence loss method
5.1.1 Principle
5.1.2 Instrumentation and measuring equipment <\/td>\n<\/tr>\n
42<\/td>\n5.1.3 Location of test sound sources and microphone traverses <\/td>\n<\/tr>\n
43<\/td>\n5.1.4 Test procedure <\/td>\n<\/tr>\n
44<\/td>\n5.1.5 Expression of results <\/td>\n<\/tr>\n
45<\/td>\n5.1.6 Measurement uncertainty
5.2 Information to be recorded <\/td>\n<\/tr>\n
46<\/td>\n5.3 Information to be reported <\/td>\n<\/tr>\n
47<\/td>\nAnnex A (normative) Qualification criteria and measurement requirements <\/td>\n<\/tr>\n
50<\/td>\nAnnex B (normative) General procedure for evaluation of test sound source directionality <\/td>\n<\/tr>\n
53<\/td>\nAnnex C (informative) Measurement uncertainty <\/td>\n<\/tr>\n
56<\/td>\nAnnex D (informative) Guidelines for referring to this test method <\/td>\n<\/tr>\n
58<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. Acoustics. Test methods for the qualification of the acoustic environment – Qualification of free-field environments<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":390496,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[267,2641],"product_tag":[],"class_list":{"0":"post-390487","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/390487","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\/390496"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=390487"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=390487"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=390487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}