{"id":281729,"date":"2024-10-19T19:02:18","date_gmt":"2024-10-19T19:02:18","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-15186-32010\/"},"modified":"2024-10-25T15:42:16","modified_gmt":"2024-10-25T15:42:16","slug":"bs-en-iso-15186-32010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-15186-32010\/","title":{"rendered":"BS EN ISO 15186-3:2010"},"content":{"rendered":"

1.1 General<\/b><\/p>\n

This part of ISO 15186 specifies a sound intensity method to determine the sound reduction index and the element-normalized level difference of building elements at low frequencies. This method has significantly better reproducibility in a typical test facility than those of ISO 140-3, ISO 140-10 and ISO 15186-1. The results are more independent of the room dimensions of the laboratory and closer to values that would be measured between rooms of volume greater than 300 m3<\/sup>. This part of ISO 15186 is applicable in the frequency range 50 Hz to 160 Hz but is mainly intended for the frequency range 50 Hz to 80 Hz.<\/p>\n

\n

NOTE For elements faced with thick, porous absorbers, the recommended frequency range is 50 Hz to 80 Hz.<\/p>\n<\/blockquote>\n

The main differences between the methods of ISO 15186-1 and ISO 15186-3 are that in ISO 15186-3<\/p>\n

    \n
  1. \n

    the sound pressure level of the source room is measured close to the surface of the test specimen, and<\/p>\n<\/li>\n

  2. \n

    the surface opposite the test specimen in the receiving room is highly absorbing and converts the room acoustically into a duct with several propagating cross-modes above the lowest cut-on frequency.<\/p>\n<\/li>\n<\/ol>\n

    The results found by the method of ISO 15186-3 can be combined with those of ISO 140-3 and ISO 15186-1 to produce data in the frequency range 50 Hz to 5 000 Hz.<\/p>\n

    1.2 Precision<\/b><\/p>\n

    The reproducibility of this intensity method is, for all frequencies, estimated to be equal to or better than that found with the method of ISO 140-3 at 100 Hz.<\/p>\n

    Some comparisons of data obtained with the methods of this part of ISO 15186 and ISO 140-3 are given in annex B.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Acoustics. Measurement of sound insulation in buildings and of building elements using sound intensity – Laboratory measurements at low frequencies<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2010<\/td>\n22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":281733,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1266,2641],"product_tag":[],"class_list":{"0":"post-281729","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-120-20","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\/281729","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\/281733"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=281729"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=281729"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=281729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}