{"id":280443,"date":"2024-10-19T18:56:31","date_gmt":"2024-10-19T18:56:31","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-389-21997\/"},"modified":"2024-10-25T15:32:36","modified_gmt":"2024-10-25T15:32:36","slug":"bs-en-iso-389-21997","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-389-21997\/","title":{"rendered":"BS EN ISO 389-2:1997"},"content":{"rendered":"<p>This part of ISO&nbsp;389 specifies reference equivalent threshold sound pressure levels (RETSPL) for the calibration of pure-tone audiometers supplementary to those specified in ISO&nbsp;389:1991<sup>1)<\/sup>. Values given in this part of ISO&nbsp;389 are applicable to insert earphones of a pattern specified in clause&nbsp;4.<\/p>\n<blockquote>\n<p>NOTE&nbsp;1 For information, a note on the derivation of the reference values and the origin of the data input is given in annex&nbsp;A, and a bibliography is given in annex&nbsp;B.<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p><b>Acoustics. Reference zero for the calibration of audiometric equipment &#8211; Reference equivalent threshold sound pressure levels for pure tones and insert earphones<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>1995<\/td>\n<td>14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":280449,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[136,2641],"product_tag":[],"class_list":{"0":"post-280443","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-11-040-01","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\/280443","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\/280449"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=280443"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=280443"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=280443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}