{"id":2439,"date":"2024-07-29T12:57:07","date_gmt":"2024-07-29T11:57:07","guid":{"rendered":"https:\/\/www.bcta.group\/sitma\/?page_id=2439"},"modified":"2026-04-07T11:55:48","modified_gmt":"2026-04-07T10:55:48","slug":"speaker-directivity-checks","status":"publish","type":"page","link":"https:\/\/www.bcta.group\/sitma\/equipment\/speaker-directivity-checks\/","title":{"rendered":"Speaker Directivity Checks"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2439\" class=\"elementor elementor-2439\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8876c11 e-flex e-con-boxed e-con e-parent\" data-id=\"8876c11\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-58ecb3f elementor-widget elementor-widget-heading\" data-id=\"58ecb3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Conduct Speaker Directivity Checks<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d8ae36 e-flex e-con-boxed e-con e-parent\" data-id=\"6d8ae36\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3873a38 e-grid e-con-boxed e-con e-child\" data-id=\"3873a38\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e588d65 elementor-widget elementor-widget-text-editor\" data-id=\"e588d65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: Arial, sans-serif; font-size: 16px; font-style: normal; font-weight: 400;\">BS EN ISO 140-4:1998 requires speaker directivity to be checked as part of Annex A. This is a mandatory requirement of the SITMA Certification Scheme and must be completed and recorded onto the SITMA Portal annually.<\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: Arial, sans-serif; font-size: 16px; font-style: normal; font-weight: 400;\">Speaker Directivity can be checked either by the certified tester, or at a facility that offers this service.<\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: Arial, sans-serif; font-size: 16px; font-style: normal; font-weight: 400;\">The method for measuring and reporting is provided below:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4018d4 elementor-widget elementor-widget-text-editor\" data-id=\"f4018d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>SITMA Members can use our template to enter their data in and submit their Speaker Directivity Checks<\/p><p>Our current issue is: <strong>Issue 1.5 <\/strong>&#8211; 7th April 2026<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b7fd747 e-grid e-con-boxed e-con e-parent\" data-id=\"b7fd747\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c8856dc elementor-align-right elementor-widget elementor-widget-button\" data-id=\"c8856dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.bcta.group\/sitma\/equipment\/speaker-stability-checks\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Click Here to How to Conduct Your Speaker Stability Checks<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8bebf08 e-flex e-con-boxed e-con e-parent\" data-id=\"8bebf08\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6579b60 elementor-widget elementor-widget-ucaddon_uc_material_bullets\" data-id=\"6579b60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ucaddon_uc_material_bullets.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n<!-- start Icon Bullets -->\n\t\t<link id='font-awesome-css' href='https:\/\/www.bcta.group\/sitma\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/font-awesome6\/fontawesome-all.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='font-awesome-4-shim-css' href='https:\/\/www.bcta.group\/sitma\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/font-awesome6\/fontawesome-v4-shims.min.css' type='text\/css' rel='stylesheet' >\n\n<style>\/* widget: Icon Bullets *\/\n\n\n\n#uc_uc_material_bullets_elementor_6579b60 *{\n\t-webkit-box-sizing: border-box;\n\t-moz-box-sizing: border-box;\n\tbox-sizing: border-box;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .uc-bullet-active{\n}\n\n\n#uc_uc_material_bullets_elementor_6579b60 .ue-icon\n{\n  display:flex;\n  align-items:center;\n  justify-content:center;\n  flex-grow:0;\n  flex-shrink:0;\n  line-height:1em;\n  transition:0.3s;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .ue-icon svg\n{\n  height:1em;\n  width:1em;\n}\n\n\n#uc_uc_material_bullets_elementor_6579b60 .uc_material_bullets_row\n{\n\tfont-weight:400;\n\toverflow:hidden;\n\tdisplay:flex;\n\tposition:relative;\n\ttext-align:left;\n\twidth:100%;\n   \n    transition:0.3s;\n}\n\n\n#uc_uc_material_bullets_elementor_6579b60 .uc_material_bullets_row a.ue-item-link\n{\n  position:absolute;\n  display:block;\n  top:0;\n  right:0;\n  left:0;\n  bottom:0;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .uc_material_bullets_row:last-child\n{\n\tmargin-bottom:0px !important;\n}\n\n\n#uc_uc_material_bullets_elementor_6579b60 .uc_material_bullets_row \n{\n\tposition:relative;\n\tvertical-align:middle;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .uc_material_bullets_row .uc_content_box\n{\n\tdisplay:flex;\n    flex-direction:column;\n    justify-content:center;\n    align-items: flex-start;\n    flex-grow:1;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .ue-bullets\n{\n  display:grid;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .ue-text, #uc_uc_material_bullets_elementor_6579b60 .ue-title, #uc_uc_material_bullets_elementor_6579b60 .ue-seperator\n{\n  width:100%;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .ue-seperator-line\n{\n  display:inline-block;\n  font-size:0px;\n}\n\n#uc_uc_material_bullets_elementor_6579b60 .ue-seperator\n{\n  font-size:0px;\n}\n\n#uc_uc_material_bullets_elementor_6579b60.uc-remote-parent .uc_material_bullets_row\n{\n  cursor:pointer;\n}\n\n.ue-title\n{\n  font-size:21px;\n  margin:0;\n}\n\n<\/style>\n\n<div class=\"uc_material_bullets  \"  id=\"uc_uc_material_bullets_elementor_6579b60\"  >   \t\n    \t<div class=\"ue-bullets uc-items-wrapper\">\n          \t<div class=\"uc_material_bullets_row elementor-repeater-item-a14d97e\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">1<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Position the Speaker<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Place the speaker on its tripod in a non-reflective environment, ideally an\nanechoic chamber at a height of around 1.5m \u00b10.5m.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-ecc3854\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">2<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Setup the Sound Level Meter<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Setup the sound level meter on its tripod to the same height as the speaker. <br>\nWhere the speaker cannot be placed in an anechoic chamber, a calculation\nis produced showing the microphone is only measuring direct noise, not\nreflected noise.<br>\nWhere measurements are made at 1.5m, it can be assumed no indirect\nsound is measured where: <br>\n- No reflective surfaces exist within 7m <br>\n- Where reflective surfaces to exist, at least 100mm of dense absorbing\nmaterial is present to reduce reflections<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-bab135e\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">3<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Calibrate the Sound Level Meter<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Calibrate the sound level meter using its calibrator<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-832577e\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">4<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Align the Speaker and Microphone<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Align the speaker and microphone such\nthat the speaker's front (on-axis position) is directly facing the microphone.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-ccbf8cc\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">5<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Turn on the Speaker<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Using pink noise, turn on the speaker to its normal sound\ninsulation testing volume (usually circa 100dB in frequencies 100Hz to 3150Hz).<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-8349978\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">6<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Measure On-axis Response<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Measure the on-axis response of the speaker at\nthis position, directly in front of the speaker. Measurements shall be made for a minimum of 6 seconds, ideally 10 seconds. The microphone is static during the measurement.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-4cce941\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">7<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Rotate and Repeat<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Rotate the speaker 30 degrees and repeat the measurement. repeat this process every 30 degrees until all 360 degrees has\nbeen measured (12 measurements in total). <br>\nNote \u2013 if using a hemisphere polyhedron speaker (cabinet loudspeaker), the\nmicrophone itself may need to be moved 30 degrees rather than the\nspeaker.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-79e7af2\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">8<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Hemisphere Polyhedron Speakers<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">This procedure must be completed in 2\nplanes for hemisphere polyhedron speakers, with at least 50cm change in\nheights.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n<div class=\"uc_material_bullets_row elementor-repeater-item-ca1e95c\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">9<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\">Analyse Data (self-checking only):<\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Import the data into FOS017 to plot the recorded data to create a directivity graph.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n\n      <\/div>\n<\/div>\n<!-- end Icon Bullets -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b7862a elementor-widget elementor-widget-text-editor\" data-id=\"5b7862a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ensure the following specification is met:\u00a0\ud835\udc37\ud835\udc56\ud835\udc5f\ud835\udc52\ud835\udc50\ud835\udc61\ud835\udc56\ud835\udc63\ud835\udc56\ud835\udc61\ud835\udc66 \ud835\udc3c\ud835\udc5b\ud835\udc51\ud835\udc52\ud835\udc65 = \ud835\udc3f360 \u2212 \ud835\udc3f30, \ud835\udc56<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f95b5bf eael-table-align-center eael-dt-th-align-left elementor-widget elementor-widget-eael-data-table\" data-id=\"f95b5bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"eael-data-table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"eael-data-table-wrap\" data-table_id=\"f95b5bf\" id=\"eael-data-table-wrapper-f95b5bf\" data-custom_responsive=\"false\">\n\t\t\t<table class=\"tablesorter eael-data-table center\" id=\"eael-data-table-f95b5bf\">\n\t\t\t    <thead>\n\t\t\t        <tr class=\"table-header\">\n\t\t\t\t\t\t\t\t\t            <th class=\"\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Frequency Range<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Directivity Index<\/span><\/th>\n\t\t\t        \t\t\t\t        <\/tr>\n\t\t\t    <\/thead>\n\t\t\t  \t<tbody>\n\t\t\t\t\t\t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t50Hz to 83Hz\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tNo Requirement\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t100Hz to 630Hz\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00b12dB\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t800Hz \t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00b14dB\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t1000Hz\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00b18dB\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t1250Hz to 5000Hz\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00b18dB\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t    <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t  \t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-283becc elementor-widget elementor-widget-ucaddon_uc_material_bullets\" data-id=\"283becc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ucaddon_uc_material_bullets.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n<!-- start Icon Bullets -->\n\n<style>\/* widget: Icon Bullets *\/\n\n\n\n#uc_uc_material_bullets_elementor_283becc *{\n\t-webkit-box-sizing: border-box;\n\t-moz-box-sizing: border-box;\n\tbox-sizing: border-box;\n}\n\n#uc_uc_material_bullets_elementor_283becc .uc-bullet-active{\n}\n\n\n#uc_uc_material_bullets_elementor_283becc .ue-icon\n{\n  display:flex;\n  align-items:center;\n  justify-content:center;\n  flex-grow:0;\n  flex-shrink:0;\n  line-height:1em;\n  transition:0.3s;\n}\n\n#uc_uc_material_bullets_elementor_283becc .ue-icon svg\n{\n  height:1em;\n  width:1em;\n}\n\n\n#uc_uc_material_bullets_elementor_283becc .uc_material_bullets_row\n{\n\tfont-weight:400;\n\toverflow:hidden;\n\tdisplay:flex;\n\tposition:relative;\n\ttext-align:left;\n\twidth:100%;\n   \n    transition:0.3s;\n}\n\n\n#uc_uc_material_bullets_elementor_283becc .uc_material_bullets_row a.ue-item-link\n{\n  position:absolute;\n  display:block;\n  top:0;\n  right:0;\n  left:0;\n  bottom:0;\n}\n\n#uc_uc_material_bullets_elementor_283becc .uc_material_bullets_row:last-child\n{\n\tmargin-bottom:0px !important;\n}\n\n\n#uc_uc_material_bullets_elementor_283becc .uc_material_bullets_row \n{\n\tposition:relative;\n\tvertical-align:middle;\n}\n\n#uc_uc_material_bullets_elementor_283becc .uc_material_bullets_row .uc_content_box\n{\n\tdisplay:flex;\n    flex-direction:column;\n    justify-content:center;\n    align-items: flex-start;\n    flex-grow:1;\n}\n\n#uc_uc_material_bullets_elementor_283becc .ue-bullets\n{\n  display:grid;\n}\n\n#uc_uc_material_bullets_elementor_283becc .ue-text, #uc_uc_material_bullets_elementor_283becc .ue-title, #uc_uc_material_bullets_elementor_283becc .ue-seperator\n{\n  width:100%;\n}\n\n#uc_uc_material_bullets_elementor_283becc .ue-seperator-line\n{\n  display:inline-block;\n  font-size:0px;\n}\n\n#uc_uc_material_bullets_elementor_283becc .ue-seperator\n{\n  font-size:0px;\n}\n\n#uc_uc_material_bullets_elementor_283becc.uc-remote-parent .uc_material_bullets_row\n{\n  cursor:pointer;\n}\n\n.ue-title\n{\n  font-size:21px;\n  margin:0;\n}\n\n<\/style>\n\n<div class=\"uc_material_bullets  \"  id=\"uc_uc_material_bullets_elementor_283becc\"  >   \t\n    \t<div class=\"ue-bullets uc-items-wrapper\">\n          \t<div class=\"uc_material_bullets_row elementor-repeater-item-79e7af2\">\n              <div class=\"ue-icon\">\n                                       <span class=\"ue-icon-text\">10<\/span> \t\n\n                \n              <\/div>\n  <div class=\"uc_content_box uc_ceal\">\n    <div class=\"ue-title\"><\/div>\n    \n    \t\n    \n    <div class=\"ue-text\">Upload the completed spreadsheet onto the SITMA Portal.<\/div>\t\n  <\/div>\n    \t\n<\/div>\n\n      <\/div>\n<\/div>\n<!-- end Icon Bullets -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How to Conduct Speaker Directivity Checks BS EN ISO 140-4:1998 requires speaker directivity to be checked as part of Annex<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":322,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"essential-blocks-fullwidth-template.php","meta":{"_eb_attr":"","footnotes":""},"class_list":["post-2439","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/pages\/2439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/comments?post=2439"}],"version-history":[{"count":10,"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/pages\/2439\/revisions"}],"predecessor-version":[{"id":2687,"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/pages\/2439\/revisions\/2687"}],"up":[{"embeddable":true,"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/pages\/322"}],"wp:attachment":[{"href":"https:\/\/www.bcta.group\/sitma\/wp-json\/wp\/v2\/media?parent=2439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}