{"id":564226,"date":"2024-11-05T18:46:33","date_gmt":"2024-11-05T18:46:33","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iec-60318-82022\/"},"modified":"2024-11-05T18:46:33","modified_gmt":"2024-11-05T18:46:33","slug":"iec-60318-82022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iec\/iec-60318-82022\/","title":{"rendered":"IEC 60318-8:2022"},"content":{"rendered":"<p>IEC 60318-8:2022 describes an acoustic coupler for loading a hearing aid or insert earphone with a specified acoustic impedance when testing its acoustic performance, in the frequency range up to 16 kHz. It is suitable for air-conduction hearing aids and earphones, coupled to the ear by means of ear inserts, earmoulds or similar devices.<br \/>\nThe acoustic coupler does not simulate the human ear. However, it has an effective volume of only 0,4 cm<sup>3<\/sup>, which is small enough not to produce significant resonances in the coupler in the frequency range below 16 kHz. Therefore, it will load the earphone with a known acoustic impedance, which allows repeatable measurements with low uncertainty to be obtained on earphones used in extended high-frequency audiometry.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Electroacoustics &#8211; Simulators of human head and ear &#8211; Part 8: Acoustic coupler for high-frequency measurements of hearing aids and earphones coupled to the ear by means of ear inserts<\/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\/iec\/\"><b>IEC<\/b><\/a><\/td>\n<td>2022-04-07<\/td>\n<td>74<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":564237,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[270,2636],"product_tag":[],"class_list":{"0":"post-564226","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-50","7":"product_cat-iec","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\/564226","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\/564237"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=564226"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=564226"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=564226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}