{"id":1073,"date":"2014-09-10T14:19:46","date_gmt":"2014-09-10T14:19:46","guid":{"rendered":"http:\/\/proqc.com\/blog\/?p=1073"},"modified":"2023-09-25T12:08:56","modified_gmt":"2023-09-25T12:08:56","slug":"who-cares-about-noise","status":"publish","type":"post","link":"https:\/\/proqc.com\/blog\/who-cares-about-noise\/","title":{"rendered":"Who cares about noise?"},"content":{"rendered":"<blockquote><p><em>\u201cOne person&#8217;s data is another person&#8217;s noise.\u201d ~K.C. Cole<\/em><\/p><\/blockquote>\n<h2>Did you know?<\/h2>\n<ul>\n<li><em>The World Health Organization (WHO) reports that the single most common irreversible occupational hazard worldwide is noise-induced hearing impairment.<\/em><\/li>\n<li><em>Noise levels are commonly measured in decibels (dB). It is a logarithmic scale rather than a linear one, because the human ear can handle such a vast range of sound levels. Zero dB is the softest sound a healthy human ear can detect.\u00a0<\/em><\/li>\n<li><em>Eighty-five decibels (dB) is the level above which hearing protection\u00a0is recommended to avoid hearing loss from the cumulative effects of exposure to noise over time. How can you tell if the noise level is 85 dB? Here&#8217;s a quick test: If you have to raise your voice to talk to someone who is an arm&#8217;s length away from you, you are likely in an environment with a sound level of 85 dB or more. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/em>Source: http:\/\/www.noisehelp.com\/facts-about-noise.html<\/li>\n<\/ul>\n<p>At Pro QC, we care about noise. Our quality engineers perform special testing to ensure that product being produced and sold meets specifications and ultimately customer expectations.<!--more--><\/p>\n<p>We use sound level meters, or sound meters, which are instruments that measure noise levels. \u00a0In the photo below, we are testing a kitchen blender. \u00a0The limit of the noise level depends\u00a0on the product, or clients may also have their\u00a0own requirements.<\/p>\n<p>We follow the general criteria below for noise testing.<\/p>\n<p>1) Place the distance between the sound level meter and blender 1m to check.<\/p>\n<p>2) Noise level limit should be &lt;85db<\/p>\n<p>In addition, note the information below from <a href=\"http:\/\/webstore.iec.ch\/preview\/info_iec60704-2-3%7Bed2.0%7Den.pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow noindex\">IEC-60704<\/a> for household appliances.<\/p>\n<table style=\"height: 331px;\" width=\"448\">\n<tbody>\n<tr>\n<td width=\"213\"><strong>Product type<\/strong><\/td>\n<td width=\"211\"><strong>Rated Power (W)<\/strong><\/td>\n<td colspan=\"2\" width=\"214\"><strong>Noise limit value \/dB(A)<\/strong><\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\" width=\"213\">Food Blender\u00a0 for dry and hard food<\/td>\n<td colspan=\"2\" width=\"213\">\u2264700<\/td>\n<td width=\"213\">90<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"213\">\u2264400<\/p>\n<p>&nbsp;<\/td>\n<td width=\"213\">85<\/td>\n<\/tr>\n<tr>\n<td width=\"213\"><\/td>\n<td colspan=\"2\" width=\"213\"><\/td>\n<td width=\"213\"><\/td>\n<\/tr>\n<tr>\n<td width=\"213\">Food blender, for soft food<\/p>\n<p>&nbsp;<\/td>\n<td colspan=\"2\" width=\"213\">\u2264700<\/td>\n<td width=\"213\">95<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Tolerance should not exceed +3 or -3 dB.<\/p>\n<p><a href=\"https:\/\/proqc.com\/blog\/wp-content\/uploads\/2023\/09\/NoiseCheck_Blender.webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-1074\" src=\"https:\/\/proqc.com\/blog\/wp-content\/uploads\/2023\/09\/NoiseCheck_Blender.webp\" alt=\"NoiseCheck_Blender\" width=\"264\" height=\"198\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u201cOne person&#8217;s data is another person&#8217;s noise.\u201d ~K.C. Cole Did you know? The World Health Organization (WHO) reports [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":3316,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[83,87,149,17,184,203],"class_list":["post-1073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-db","tag-engineer","tag-noise","tag-quality","tag-sound","tag-testing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Who Cares About Noise? - Pro QC Blog<\/title>\n<meta name=\"description\" content=\"Pro QC&#039;s quality engineers perform special testing to ensure that products being produced meet specifications and ultimately customer expectations.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/proqc.com\/blog\/who-cares-about-noise\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Who Cares About Noise? 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