{"id":8093,"date":"2013-12-05T19:46:03","date_gmt":"2013-12-06T00:46:03","guid":{"rendered":"http:\/\/embedded-lab.com\/blog\/?p=8093"},"modified":"2013-12-05T19:51:58","modified_gmt":"2013-12-06T00:51:58","slug":"special-hearing-aid-for-high-frequency-hearing-loss","status":"publish","type":"post","link":"https:\/\/embedded-lab.com\/blog\/special-hearing-aid-for-high-frequency-hearing-loss\/","title":{"rendered":"Special hearing aid for high frequency hearing loss"},"content":{"rendered":"<p>A person suffered from high-frequency hearing loss has reduced ability to hear high frequency sounds. This has direct impact on his\/her ability to understand speech because most of the commonly used consonants like s, h, and f, are spoken with high pitches. Other examples of high frequency sound are a woman&#8217;s or a child&#8217;s voice. Studies have shown that by simply amplifying the high frequency notes through a hearing aid does not help too much. Latest hearing aid technologies use a technique called frequency lowering where the high frequency notes are captured, processed, and delivered to the person in lower note frequencies, which are much easier to hear. I found this nice instructable that describes a <a href=\"http:\/\/www.instructables.com\/id\/Intro-High-Frequency-Hearing-Loss-and-the-Frequenc\/?ALLSTEPS\" target=\"_blank\"><strong>DIY frequency shifting hearing aid<\/strong><\/a>\u00a0project as a simple solution to the above problem. The project uses low pass and band-pass filters to isolate low and high frequencies in the original audio signal. The so-isolated high frequencies are shifted down by passing through a modulator with a 2KHz carrier signal. The down-converted frequencies are then summed up with the isolated low frequencies to regenerate the original sound.<\/p>\n<div id=\"attachment_8094\" style=\"width: 590px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2013\/12\/HearingAid.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8094\" class=\"size-full wp-image-8094\" alt=\"Hearing aid for high-frequency hearing loss\" src=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2013\/12\/HearingAid.jpg\" width=\"580\" height=\"435\" srcset=\"https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2013\/12\/HearingAid.jpg 580w, https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2013\/12\/HearingAid-550x412.jpg 550w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/a><p id=\"caption-attachment-8094\" class=\"wp-caption-text\">Hearing aid for high-frequency hearing loss<\/p><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A person suffered from high-frequency hearing loss has reduced ability to hear high frequency sounds. This has direct impact on his\/her ability to understand speech because most of the commonly used consonants like s, h, and f, are spoken with high pitches. Other examples of high frequency sound are a woman&#8217;s or a child&#8217;s voice. Studies have shown that by simply amplifying the high frequency notes through a hearing aid does not help too much. Latest hearing aid technologies use a technique called frequency lowering where the high frequency notes are captured, processed, and delivered to the person in lower<\/p>\n","protected":false},"author":1,"featured_media":8094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[227,183],"tags":[696,695,697],"class_list":["post-8093","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-tips-and-tricks","tag-frequency-shifting","tag-hearing-aid","tag-modulator"],"_links":{"self":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/8093","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/comments?post=8093"}],"version-history":[{"count":3,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/8093\/revisions"}],"predecessor-version":[{"id":8097,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/8093\/revisions\/8097"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media\/8094"}],"wp:attachment":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media?parent=8093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/categories?post=8093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/tags?post=8093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}