{"id":3349,"date":"2022-03-09T17:36:30","date_gmt":"2022-03-09T16:36:30","guid":{"rendered":"https:\/\/www.audiomatica.com\/wp\/?p=3349"},"modified":"2022-03-16T16:49:42","modified_gmt":"2022-03-16T15:49:42","slug":"test-speech-intelligibility-reduction-due-to-face-masks","status":"publish","type":"post","link":"https:\/\/www.audiomatica.com\/wp\/?p=3349","title":{"rendered":"Measuring Speech Intelligibility Reduction with Face Masks"},"content":{"rendered":"\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.audiomatica.com\/wp\/wp-content\/uploads\/STI_mask_report.pdf\" target=\"_blank\">Measuring Speech Intelligibility Reduction due to Face Masks<\/a><br>(Brief Report, by Daniele Ponteggia \u2013 848kB Pdf)<\/p>\n\n\n\n<p>While the global Covid-19 pandemic is in remission at this stage, the use of face masks can be expected from now on to be very common in a large number of applications.<br>Using a face mask makes verbal communication more difficult, the lack of visual cues is one of the reasons but, above all, the mask has an important influence on sound propagation. <\/p>\n\n\n\n<p>We were curious about quantifying the intelligibility loss when wearing a face mask. A brief bibliography research found many recent articles about the impact of Personal Protecting Equipment PPE on speech intelligibility, but few articles with Speech Transmission Index STI measured data.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.audiomatica.com\/wp\/wp-content\/uploads\/WhatsApp-Image-2022-03-02-at-15.15.51-2.jpeg\" alt=\"\" class=\"wp-image-3352\" width=\"500\" height=\"667\" srcset=\"https:\/\/www.audiomatica.com\/wp\/wp-content\/uploads\/WhatsApp-Image-2022-03-02-at-15.15.51-2.jpeg 768w, https:\/\/www.audiomatica.com\/wp\/wp-content\/uploads\/WhatsApp-Image-2022-03-02-at-15.15.51-2-225x300.jpeg 225w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption>Our test setup<\/figcaption><\/figure>\n\n\n\n<p>We decided to investigate further using our CLIO 12.5 system which can measure the STI with both direct and indirect method. <\/p>\n\n\n\n<p>Please read our short report available here:<\/p>\n\n\n\n<p><a href=\"https:\/\/www.audiomatica.com\/wp\/wp-content\/uploads\/STI_mask_report.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Measuring Speech Intelligibility Reduction due to Face Masks<\/a><br>(Brief Report, by Daniele Ponteggia \u2013 848kB Pdf)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While the global Covid-19 pandemic is in remission at this stage, the use of face masks can be expected from now on to be very common in a large number of applications.<br \/>\nUsing a face mask makes verbal communication more difficult, the lack of visual cues is one of the reasons but, above all, the mask has an important influence on sound propagation. We decided to directly investigate the matter and gather some data setting up a simple experiment using a Gras model 44A mouth simulator and the indirect IEC 60268-16 Speech Transmission Index measurement technique as implemented in CLIO 12.5.<\/p>\n","protected":false},"author":1,"featured_media":3352,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3349","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-senza-categoria","odd"],"_links":{"self":[{"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/3349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3349"}],"version-history":[{"count":7,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/3349\/revisions"}],"predecessor-version":[{"id":3377,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/3349\/revisions\/3377"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=\/wp\/v2\/media\/3352"}],"wp:attachment":[{"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.audiomatica.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}