{"id":937,"date":"2025-09-10T12:49:09","date_gmt":"2025-09-10T03:49:09","guid":{"rendered":"https:\/\/acoustic-measurement.com\/?post_type=technology&#038;p=937"},"modified":"2025-08-26T12:56:07","modified_gmt":"2025-08-26T03:56:07","slug":"efficient-acoustic-testing-for-compact-electric-devices","status":"publish","type":"technology","link":"https:\/\/acoustic-measurement.com\/en\/technology\/efficient-acoustic-testing-for-compact-electric-devices\/","title":{"rendered":"Efficient Acoustic Testing for Compact Electric Devices \u2014 EAAC \u00d7 HBK Analysis Enables Fast, Reliable Mass Production Checks \u2014"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Introduction: Small Devices, Big Challenges in Acoustic Testing<\/h2>\n\n\n\n<p>As smart appliances, small fans, pumps, and electric modules become more widespread, <strong>low-noise performance<\/strong> has become a key quality indicator.<br>But testing compact devices acoustically poses a dilemma:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Output levels are low<\/li>\n\n\n\n<li>Structures are complex<\/li>\n\n\n\n<li>Inspection needs to be <strong>fast and automated<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Precision and speed rarely go hand in hand\u2014unless the environment and instruments are built for it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solution: EAAC \u00d7 HBK for High-Speed, Noise-Free Testing<\/h2>\n\n\n\n<p>At Moritani, we deliver optimized setups using:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Test Environment<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>EAAC (Electroacoustic Anechoic Chamber)<\/strong><\/h4>\n\n\n\n<p>Compact, quiet, reflection-free environment for clean measurements<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Sensors &amp; Analysis<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>HBK Microphones \u00d7 PULSE System<\/strong><\/h4>\n\n\n\n<p>FFT analysis, NG thresholds by frequency band, automated judgment logic<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Automation Options<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Automatic chamber doors<\/li>\n\n\n\n<li>Robotic DUT loading<\/li>\n\n\n\n<li>Complete cycle: signal generation \u2192 measurement \u2192 pass\/fail output<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Workflow Example: Inline Testing for Portable Pumps<\/h2>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\">\n<li>1. Device is automatically loaded into EAAC from conveyor<\/li>\n\n\n\n<li>2. HBK microphone captures operational sound<\/li>\n\n\n\n<li>3. FFT data is compared against a stored reference spectrum<\/li>\n\n\n\n<li>4. PULSE outputs OK\/NG result to PLC \u2192 sorting mechanism handles it<\/li>\n<\/ul>\n\n\n\n<p>The entire cycle takes only <strong>3\u20135 seconds<\/strong>, enabling <strong>real-time judgment<\/strong> with no offline processing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why EAAC Is Ideal for Compact DUTs<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Even in 1\u20132 m\u00b2 space, <strong>true free-field conditions<\/strong> are achieved<\/li>\n\n\n\n<li>Easy to install and relocate\u2014perfect for <strong>flexible line expansion<\/strong><\/li>\n\n\n\n<li>Designed for <strong>acoustic compatibility with HBK sensors<\/strong><\/li>\n<\/ul>\n\n\n\n<p>For small devices, <strong>even minor reflections or ambient noise can distort results<\/strong>. EAAC offers the environmental stability needed for precision.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><strong>Customizat<\/strong><\/strong>i<strong><strong>on Options Available<\/strong><\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Custom chamber dimensions for your DUT size<\/li>\n\n\n\n<li>Acoustic layout optimized for your target frequency range<\/li>\n\n\n\n<li>Integrated automation and pass\/fail interfaces<\/li>\n\n\n\n<li>Full integration support with HBK microphones and analyzers<\/li>\n<\/ul>\n\n\n\n<p>\u25b6 <strong>[<a href=\"https:\/\/acoustic-measurement.com\/en\/contact\/\"><strong><strong><strong>Contact Moritani for Consultation<\/strong><\/strong><\/strong><\/a>]<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction: Small Devices, Big Challenges in Acoustic Testing As smart appliances, small fans, pumps, and electric modules become more widespread, low-noise performance has become a key quality indicator.But testing compact devices acoustically poses a dilemma: Precision and speed rarely go hand in hand\u2014unless the environment and instruments are built for it. Solution: EAAC \u00d7 HBK [&hellip;]<\/p>\n","protected":false},"featured_media":936,"parent":0,"template":"","solution_cat":[3],"class_list":["post-937","technology","type-technology","status-publish","has-post-thumbnail","hentry","solution_cat-tax_electric","en-US"],"acf":[],"_links":{"self":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/technology\/937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/technology"}],"about":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/types\/technology"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/media\/936"}],"wp:attachment":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/media?parent=937"}],"wp:term":[{"taxonomy":"solution_cat","embeddable":true,"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/solution_cat?post=937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}