{"id":614872,"date":"2024-11-05T23:12:27","date_gmt":"2024-11-05T23:12:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-389-41994\/"},"modified":"2024-11-05T23:12:27","modified_gmt":"2024-11-05T23:12:27","slug":"iso-389-41994","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-389-41994\/","title":{"rendered":"ISO 389-4:1994"},"content":{"rendered":"<p>Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Acoustique \u2014 Z\u00e9ro de r\u00e9f\u00e9rence pour l&#8217;\u00e9talonnage d&#8217;\u00e9quipements audiom\u00e9triques \u2014 Partie 4: Niveaux de r\u00e9f\u00e9rence pour bruit de masque en bande \u00e9troite<\/b><\/p>\n<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\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>1994-10<\/td>\n<td>12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":614886,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[231,2634],"product_tag":[],"class_list":{"0":"post-614872","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-140","7":"product_cat-iso","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\/614872","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\/614886"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=614872"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=614872"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=614872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}