{"id":280915,"date":"2024-10-19T18:58:34","date_gmt":"2024-10-19T18:58:34","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-389-82004\/"},"modified":"2024-10-25T15:35:56","modified_gmt":"2024-10-25T15:35:56","slug":"bs-en-iso-389-82004","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-389-82004\/","title":{"rendered":"BS EN ISO 389-8:2004"},"content":{"rendered":"<p>This part of ISO&nbsp;389 specifies reference equivalent threshold sound pressure levels (RETSPLs) for pure tones in the frequency range from 125&nbsp;Hz to 8&nbsp;kHz, applicable to the calibration of air conduction audiometers equipped with a particular model of circumaural earphones (SENNHEISER HDA 200).<\/p>\n<blockquote>\n<p>NOTE Some notes and references on the derivation and the test conditions used to determine the recommended reference levels are given in Annex&nbsp;A and the Bibliography.<\/p>\n<\/blockquote>\n<p>The sound attenuation of the earphone is given in Annex&nbsp;B. For speech audiometers of types&nbsp;A-E and B-E (see IEC&nbsp;60645-2), the correction figures of the earphone for a free-field equivalent output are given in Annex&nbsp;C.<\/p>\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 circumaural 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>2004<\/td>\n<td>16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":280919,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[136,2641],"product_tag":[],"class_list":{"0":"post-280915","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\/280915","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\/280919"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=280915"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=280915"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=280915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}