{"id":2075,"date":"2016-05-19T12:18:33","date_gmt":"2016-05-19T12:18:33","guid":{"rendered":"http:\/\/ambientsystem.eu\/en\/product\/s4t-safety-for-tunnel\/"},"modified":"2025-08-06T09:10:46","modified_gmt":"2025-08-06T09:10:46","slug":"s4t-safety-for-tunnel","status":"publish","type":"portfolio","link":"https:\/\/panel.ambientsystem.eu\/en\/product\/s4t-safety-for-tunnel\/","title":{"rendered":"S4T SAFETY FOR TUNNEL"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3qi2vf-7185e2e494446289cbece77f3a8057c6\">\n#top .av-special-heading.av-3qi2vf-7185e2e494446289cbece77f3a8057c6{\npadding-bottom:10px;\nfont-size:41px;\n}\nbody .av-special-heading.av-3qi2vf-7185e2e494446289cbece77f3a8057c6 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-3qi2vf-7185e2e494446289cbece77f3a8057c6 .av-special-heading-tag{\nfont-size:41px;\n}\n.av-special-heading.av-3qi2vf-7185e2e494446289cbece77f3a8057c6 .av-subheading{\nfont-size:20px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-3qi2vf-7185e2e494446289cbece77f3a8057c6 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-3qi2vf-7185e2e494446289cbece77f3a8057c6 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-3qi2vf-7185e2e494446289cbece77f3a8057c6 av-special-heading-h1 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-0  el_before_av_slideshow_full  avia-builder-el-no-sibling  av-inherit-size'><h1 class='av-special-heading-tag'  itemprop=\"headline\"  >S4T SAFETY FOR TUNNEL<\/h1><div class='av-subheading av-subheading_below'><p>ADVANCED VOICE ALARM SYSTEM WITH SPECIALIZED TUNNEL LOUDSPEAKERS<\/p>\n<\/div><div class=\"special-heading-border\"><div 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el_before_av_one_half  first flex_column_div av-zero-column-padding '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1ggf5kr-6d43be53bba92286b5963172ab89fb5c\">\n.avia-image-container.av-1ggf5kr-6d43be53bba92286b5963172ab89fb5c img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-1ggf5kr-6d43be53bba92286b5963172ab89fb5c .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-1ggf5kr-6d43be53bba92286b5963172ab89fb5c av-styling- avia_animated_image av-animated-when-visible-95 pop-up avia-align-left  avia-builder-el-5  el_before_av_hr  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" class='wp-image-39901 avia-img-lazy-loading-not-39901 avia_image ' src=\"https:\/\/panel.ambientsystem.eu\/wp-content\/uploads\/2016\/04\/logo_multives.svg\" alt='' title='logo_multives'  height=\"94.16\" width=\"370.35\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2qp2jv-ce7831e49a249da80d3f420aa20ec556\">\n#top .hr.hr-invisible.av-2qp2jv-ce7831e49a249da80d3f420aa20ec556{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-2qp2jv-ce7831e49a249da80d3f420aa20ec556 hr-invisible  avia-builder-el-6  el_after_av_image  el_before_av_iconlist '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<div  class='avia-icon-list-container av-1ebbb0r-57f2eaadae731fb50c9ef3197c502d54  avia-builder-el-7  el_after_av_hr  avia-builder-el-last  plusicon'><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-big av-1ebbb0r-57f2eaadae731fb50c9ef3197c502d54 avia-iconlist-animate'>\n<li><div class='iconlist_icon av-1cht71n-50038c1b7a8a97bb46d28dec7f180758 avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue800' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Advanced DSP for best audio transmission in harsh acoustic conditions<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-1bouggr-77186328ad45e175ab9df70f3bf05d8e avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue812' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Communication redundancy between control units and fireman microphone<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-19maziz-48ed101fe5e5a1c224178ee0ba27a190 avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue812' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Distributed intelligence of the system<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-18lkbsb-b7e625d45f6ee8a4443fc59d9075331b avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue800' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Flexible and scalable configuration<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-15np0zv-040db9764219287dabb0f6fa8c0f4f85 avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue800' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Specially designed for tunnel applications<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-14cs2iz-89e4aab961189da0a2bc898c144945e8 avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue800' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Highly directional asymmetric horn<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-13esnbf-2b29da85dc5f7e60b5a017a755dc0848 avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue800' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Excellent speech intelligibility<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-10o6u3v-7f3862af102a474118fb0c5d95c16c71 avia-font-entypo-fontello'><span class='iconlist-char' aria-hidden='true' data-av_icon='\ue800' data-av_iconfont='entypo-fontello'><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Stainless steel construction<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3izl7v-4ba4ffcf5cec600a653cad3e46e5d2cc\">\n.flex_column.av-3izl7v-4ba4ffcf5cec600a653cad3e46e5d2cc{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div class='flex_column av-3izl7v-4ba4ffcf5cec600a653cad3e46e5d2cc av_one_half  avia-builder-el-8  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2svimj-8dd958d350f761c0635bbfed6faa6925\">\n#top .av-special-heading.av-2svimj-8dd958d350f761c0635bbfed6faa6925{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-2svimj-8dd958d350f761c0635bbfed6faa6925 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-2svimj-8dd958d350f761c0635bbfed6faa6925 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-2svimj-8dd958d350f761c0635bbfed6faa6925 av-special-heading-h3 blockquote modern-quote  avia-builder-el-9  el_before_av_textblock  avia-builder-el-first  bold uppercase'><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Advanced Voice Alarm System with specialized tunnel loudspeakers<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-vx154b-cb90a3cb200bf1a98e28c673ad2fc552'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>In case of an emergency, the Voice Alarm\u00a0System needs to guide people in the tunnel to safety so the audio transmission should be as clear as possible. In general, due to high levels of reverberation and noise, a tunnel is not an ideal environment for Voice Alarm System and therefore speech intelligibility becomes a critical parameter for any voice alarm application.<\/p>\n<p>To establish a sufficient level of speech intelligibility, a highly directional speakers system is required. By reducing the energy emitted to other surfaces, reflective sound energy can be minimized which results in a better direct to reverberant ratio. This will improve the maximum feasible speech intelligibility. To minimize disturbing echo effects, resulting in a loss of speech intelligibility, each horn speaker is driven by an individual signal channel in a 100 V installation, which is equipped with audio DSP including EQ and delay. Our product S4T (Safety For Tunnel) offers the most effective solution which seamlessly combines a dedicated VES with tailored Tunnel Loudspeakers.<\/p>\n<div class=\"av-special-heading av-special-heading-h4 avia-builder-el-14 el_after_av_hr el_before_av_textblock \"><\/div>\n<section class=\"av_textblock_section\">\n<div class=\"avia_textblock \"><\/div>\n<\/section>\n<\/div><\/section><\/p><\/div>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='after_section_1'  class='main_color av_default_container_wrap container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2075'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ljy1u4pr-4f76cd2f17f39a1f568318c200511dc8\">\n#top 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