{"id":30045,"date":"2023-09-15T10:10:40","date_gmt":"2023-09-15T08:10:40","guid":{"rendered":"https:\/\/alphacoustic.com\/metriseis-akoustikis-poiotitas\/"},"modified":"2025-01-21T19:37:15","modified_gmt":"2025-01-21T17:37:15","slug":"acoustic-quality-measurements","status":"publish","type":"page","link":"https:\/\/alphacoustic.com\/en\/acoustic-quality-measurements\/","title":{"rendered":"Acoustic Quality Measurements"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"30045\" class=\"elementor elementor-30045 elementor-665\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b5194d8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b5194d8\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-837e454\" data-id=\"837e454\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-3877f5c elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"3877f5c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-f5f692b\" data-id=\"f5f692b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-6c2f10c elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"6c2f10c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-b55049f\" data-id=\"b55049f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d519f7a elementor-widget__width-auto e-transform elementor-widget elementor-widget-image\" data-id=\"d519f7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_translateY_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:1,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/red-line.svg\" title=\"red-line\" alt=\"red-line\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\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-edbe76f elementor-widget__width-auto elementor-widget elementor-widget-heading\" data-id=\"edbe76f\" 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<span class=\"elementor-heading-title elementor-size-default\">SERVICES<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e002ca elementor-widget elementor-widget-heading\" data-id=\"4e002ca\" 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<h1 class=\"elementor-heading-title elementor-size-default\">ACOUSTIC-QUALITY-MEASUREMENTS<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7a19922 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"7a19922\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-12264cad\" data-id=\"12264cad\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-384cf0be elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"384cf0be\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-46af67ed\" data-id=\"46af67ed\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3991712d elementor-widget elementor-widget-heading\" data-id=\"3991712d\" 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\">MEASUREMENT, ANALYSIS AND PREDICTION OF ROOM ACOUSTIC PERFORMANCE \u2013 ELECTROACOUSTIC MEASUREMENTS<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9d8c406 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"9d8c406\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c1472e2\" data-id=\"c1472e2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-df8a063 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"df8a063\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-6bc3d46\" data-id=\"6bc3d46\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7749a24 elementor-widget elementor-widget-text-editor\" data-id=\"7749a24\" 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\tEvery enclosed space has certain acoustic parameters crucial to determine if it is suitable for a specific usage (e.g. music production, speech, etc.). In addition, these acoustic features frequently dictate the type and the specifications of a potential PA installation in this space.\r\n\r\nIn ALPHA Acoustiki, using state-of-the-art acoustic software and years of experience in the field, we can calculate and predict these acoustic characteristics of the room before it is even built.\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-797d166 elementor-widget elementor-widget-image\" data-id=\"797d166\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"294\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2020\/11\/omnidirectional-speaker.jpg\" class=\"attachment-large size-large wp-image-17886\" alt=\"omni-directional-loudspeaker\" srcset=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2020\/11\/omnidirectional-speaker.jpg 600w, https:\/\/alphacoustic.com\/wp-content\/uploads\/2020\/11\/omnidirectional-speaker-300x147.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\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-356c51e elementor-widget elementor-widget-heading\" data-id=\"356c51e\" 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<span class=\"elementor-heading-title elementor-size-default\">Omnidirectional Sound Source (Dodecahedron)<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d4dfd4 elementor-widget elementor-widget-text-editor\" data-id=\"7d4dfd4\" 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>However, using specialized equipment to perform on-site acoustic measurements, we can evaluate the room response in more detail. This is practically done by measuring the impulse response of the space at specific source\/receiver positions using an omnidirectional sound source (dodecahedron speaker). Sine sweeps (or \u201cSwept-sines) used as excitation signals provide a way to measure linear impulse response.<\/p>\n\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-2afd3da elementor-widget elementor-widget-text-editor\" data-id=\"2afd3da\" 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>Using the impulse response of a room, we can generate and calculate various acoustic parameters such as:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-be5cd8a elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"be5cd8a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8746fc0\" data-id=\"8746fc0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7a6dd9c elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"7a6dd9c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Reverberation Time; RT60, RT20<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Frequency Response<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"> Early Decay Time; EDT)<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"> Clarity; C50 C80<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Definition; D50 D80<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Sound Strength; G<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Sound Level; ??<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Percentage Articulation Loss of Consonants; %ALCons<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Speech Transmission Index &amp; Rapid Speech Transmission Index; STI \/ RASTI<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3be6140\" data-id=\"3be6140\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6280fa0 elementor-widget elementor-widget-text-editor\" data-id=\"6280fa0\" 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\tThe sound perceived by a listener into an enclosed room can be divided into three fractions: direct sound, early reflections, and reverberation (delayed reflections).\r\n\r\n<strong>Direct sound<\/strong>\u00a0is waves that reach the listener\u2019s ears directly from the source.\r\n\r\n<strong>Early reflections<\/strong>\u00a0from the side walls, the roof, etc., arrive afterwards, because they need to travel a greater distance. Early reflections are those that reach the listener up to 50 ms (100 ms for large rooms).\r\n\r\nFinally, the\u00a0<strong>delayed reflections<\/strong>, which are the sound energy that reaches the listener after the time limit of 50 ms (100 ms for large rooms), contribute to the phenomenon of reverberation.\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-89980cd elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"89980cd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d4f2ebb\" data-id=\"d4f2ebb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9199913 elementor-widget elementor-widget-image\" data-id=\"9199913\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"500\" height=\"271\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/waterfallheat.jpg\" class=\"attachment-large size-large wp-image-671\" alt=\"\" srcset=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/waterfallheat.jpg 500w, https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/waterfallheat-200x108.jpg 200w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-bab2bfe\" data-id=\"bab2bfe\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3695d79 elementor-widget elementor-widget-heading\" data-id=\"3695d79\" 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<span class=\"elementor-heading-title elementor-size-default\">Objective and subjective room criteria<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-250a8a3 elementor-widget elementor-widget-html\" data-id=\"250a8a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<table>\r\n<thead>\r\n<tr>\r\n<th>RASTI<\/th>\r\n<th>ALcons (%)<\/th>\r\n<th>\u0399ntelligibility<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>0-0.3<\/td>\r\n<td>>15<\/td>\r\n<td>bad<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>0.3-0.45<\/td>\r\n<td>15-12<\/td>\r\n<td>fair<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>0.45-0.6<\/td>\r\n<td>12-8<\/td>\r\n<td>good<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>0.6-0.75<\/td>\r\n<td>8-4<\/td>\r\n<td>very good<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>0.75-1<\/td>\r\n<td><4<\/td>\r\n<td>excellent<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2a2e4c6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2a2e4c6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-efe7a1a\" data-id=\"efe7a1a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-baf998f elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"baf998f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-a6e4b5e\" data-id=\"a6e4b5e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-beb1271 elementor-widget elementor-widget-text-editor\" data-id=\"beb1271\" 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\tThe acoustic parameters mentioned above are measured before the study and after the acoustic treatment. Depending on the type and the usage of a room (e.g. music, speech), each acoustic parameter has a different impact on the design or treatment.\r\n\r\nIn an acoustic treatment of a room designed for speech (e.g. lecture room), the key acoustic feature is speech intelligibility, i.e. the clarity of the individual vowels and consonants of the speaker in any position in the room. In contrast, a concert hall requires a different and often more complex approach.\r\n\r\nDuring those electroacoustic measurements, we can identify various acoustic quality problems such as but not limited to; standing waves, flutter echo, comb filtering, room resonance, etc.\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-53f3d683 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"53f3d683\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3bd71ce6\" data-id=\"3bd71ce6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-60ea0acb elementor-tabs-view-horizontal elementor-widget elementor-widget-tabs\" data-id=\"60ea0acb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"tabs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-tabs\">\n\t\t\t<div class=\"elementor-tabs-wrapper\" role=\"tablist\" >\n\t\t\t\t\t\t\t\t\t<div id=\"elementor-tab-title-1621\" class=\"elementor-tab-title elementor-tab-desktop-title\" aria-selected=\"true\" data-tab=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"elementor-tab-content-1621\" aria-expanded=\"false\">Photos<\/div>\n\t\t\t\t\t\t\t\t\t<div id=\"elementor-tab-title-1622\" class=\"elementor-tab-title elementor-tab-desktop-title\" aria-selected=\"false\" data-tab=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"elementor-tab-content-1622\" aria-expanded=\"false\">Documents<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<div class=\"elementor-tabs-content-wrapper\" role=\"tablist\" aria-orientation=\"vertical\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-tab-title elementor-tab-mobile-title\" aria-selected=\"true\" data-tab=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"elementor-tab-content-1621\" aria-expanded=\"false\">Photos<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1621\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1621\" tabindex=\"0\" hidden=\"false\"><div class=\"custom-gallery-container gallery\"><div class=\"custom-gallery-image-wrapper\"><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Room-Acoustics-Measurement-3-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 1 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Room-Acoustics-Measurement-3.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Sound-Quality-measurements-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 2 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Sound-Quality-measurements.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Room-Acoustics-Measurement-2-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 3 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Room-Acoustics-Measurement-2.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/03\/Acoustic_Quality_Measurements_in_Studio-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 4 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/03\/Acoustic_Quality_Measurements_in_Studio.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2025\/12\/recording-room-impulse-response-measurement-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 5 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2025\/12\/recording-room-impulse-response-measurement.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/03\/Acoustic-Quality-Measurements-in-Meeting-Room-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 6 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/03\/Acoustic-Quality-Measurements-in-Meeting-Room-rotated.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2025\/12\/Acoustic-Quality-Measurements-Reverberation-Time-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 7 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2025\/12\/Acoustic-Quality-Measurements-Reverberation-Time.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/03\/Acoustic-Quality-Measurements-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 8 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/03\/Acoustic-Quality-Measurements.jpg\" \/><\/div><div class=\"custom-gallery-image-wrapper\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Room-Acoustics-Measurement-1-150x150.jpg\" class=\"gallery__Image\" alt=\"\u03a6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 9 - Acoustic Quality Measurements\" data-large=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2024\/02\/Room-Acoustics-Measurement-1.jpg\" \/><\/div><\/div><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-tab-title elementor-tab-mobile-title\" aria-selected=\"false\" data-tab=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"elementor-tab-content-1622\" aria-expanded=\"false\">Documents<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1622\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1622\" tabindex=\"0\" hidden=\"hidden\"><div class=\"documents-wrapper\"><a href=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2025\/01\/ALPHA-ACOUSTIKI-SA-Acoustic-Measurements-CV-24.pdf\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2023\/09\/pdf-icon-blue.png\" \/> ALPHA Acoustiki Acoustics Measurement CV<\/a><\/div><\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-15bc6237 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"15bc6237\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-429612a0\" data-id=\"429612a0\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-584d7e7b elementor-hidden-desktop elementor-hidden-laptop elementor-hidden-tablet elementor-widget elementor-widget-image\" data-id=\"584d7e7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"707\" height=\"620\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/lets-talk.jpg\" class=\"attachment-large size-large wp-image-482\" alt=\"\" srcset=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/lets-talk.jpg 707w, https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/lets-talk-200x175.jpg 200w, https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/lets-talk-600x526.jpg 600w\" sizes=\"(max-width: 707px) 100vw, 707px\" \/>\t\t\t\t\t\t\t\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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7821208d\" data-id=\"7821208d\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-25127ec7 elementor-widget__width-auto e-transform elementor-widget elementor-widget-image\" data-id=\"25127ec7\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_translateY_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:1,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateX_effect_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_translateY_effect_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alphacoustic.com\/wp-content\/uploads\/2023\/09\/red-line.svg\" title=\"red-line\" alt=\"red-line\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\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-3e64886e elementor-widget__width-auto elementor-widget elementor-widget-heading\" data-id=\"3e64886e\" 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<span class=\"elementor-heading-title elementor-size-default\">IN TUNE WITH YOUR NEEDS<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-734ae539 elementor-widget elementor-widget-heading\" data-id=\"734ae539\" 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\">\u0395\u03a0\u0399\u039a\u039f\u0399\u039d\u03a9\u039d\u0399\u0391<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-72eae364 elementor-widget elementor-widget-heading\" data-id=\"72eae364\" 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<div class=\"elementor-heading-title elementor-size-default\">\u0395\u03bb\u03ac\u03c4\u03b5 \u03c3\u03b5 \u03b5\u03c0\u03b1\u03c6\u03ae \u03bc\u03b5 \u03c4\u03bf \u03b5\u03be\u03b5\u03b9\u03b4\u03b9\u03ba\u03b5\u03c5\u03bc\u03ad\u03bd\u03bf \u03a4\u03b5\u03c7\u03bd\u03b9\u03ba\u03cc \u03c4\u03bc\u03ae\u03bc\u03b1 \u03c4\u03b7\u03c2 \u0395\u03c4\u03b1\u03b9\u03c1\u03b5\u03af\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c3\u03b1\u03c2 \u03ba\u03b1\u03b8\u03bf\u03b4\u03b7\u03b3\u03ae\u03c3\u03b5\u03b9 \u03c3\u03c7\u03b5\u03c4\u03b9\u03ba\u03ac \u03bc\u03b5 \u03c4\u03bf \u03b6\u03b7\u03c4\u03bf\u03cd\u03bc\u03b5\u03bd\u03cc \u03c3\u03b1\u03c2.<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ce553d elementor-align-left elementor-widget elementor-widget-global elementor-global-30648 elementor-global-30382 elementor-widget-button\" data-id=\"4ce553d\" 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-lg\" href=\"https:\/\/alphacoustic.com\/en\/contact-us\/\">\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\">CONTACT<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>SERVICES ACOUSTIC-QUALITY-MEASUREMENTS MEASUREMENT, ANALYSIS AND PREDICTION OF ROOM ACOUSTIC PERFORMANCE \u2013 ELECTROACOUSTIC MEASUREMENTS Every enclosed space has certain acoustic parameters crucial to determine if it is suitable for a specific usage (e.g. music production, speech, etc.). In addition, these acoustic features frequently dictate the type and the specifications of a potential PA installation in this [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":31738,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-30045","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Acoustic Quality Measurements | Alpha Acoustiki<\/title>\n<meta name=\"description\" content=\"Through specialized Acoustic programs &amp; equipment, the acoustic characteristics of the space can be calculated and predicted.\" \/>\n<meta name=\"robots\" content=\"index, follow\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alphacoustic.com\/en\/wp-json\/wp\/v2\/pages\/30045\/\" \/>\n<meta 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