{"id":7637,"date":"2020-05-11T09:00:35","date_gmt":"2020-05-11T14:00:35","guid":{"rendered":"https:\/\/pro.harman.com\/insights\/?p=7637"},"modified":"2025-09-30T08:52:51","modified_gmt":"2025-09-30T18:52:51","slug":"what-is-feedback-suppression-and-how-can-it-help-your-performances","status":"publish","type":"post","link":"https:\/\/pro.harman.com\/insights\/education\/what-is-feedback-suppression-and-how-can-it-help-your-performances\/","title":{"rendered":"What is Feedback Suppression and How Can It Help Your Performances?"},"content":{"rendered":"<p>Squuueeeeeeaaaaccchh! You know it in an instant: that piercing, ear-melting shriek blaring out of your loudspeakers. It\u2019s feedback, and it\u2019s a showstopper\u2014in more ways than one.<\/p>\n<p>Feedback, the high-pitched wail generated when a signal loop builds between a sound system\u2019s audio input (here, a microphone) and amplified output (speaker), can happen anytime, anywhere. Feedback dangers lurk all around you: Common offenders include singers cupping mics, presenters on wireless mics wandering into danger zones onstage, incorrect placement of floor monitors, even fluctuations in air temperature and humidity. And, feedback isn\u2019t just an annoying noise; it can cause irreparable damage your loudspeakers\u2014and your ears.<\/p>\n<div id=\"attachment_7694\" style=\"width: 481px\" class=\"wp-caption alignleft\"><a class=\"lightbox\" href=\"https:\/\/pro.harman.com\/insights\/wp-content\/uploads\/2020\/05\/AFS-Image-2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7694\" class=\" wp-image-7694\" src=\"https:\/\/pro.harman.com\/insights\/wp-content\/uploads\/2020\/05\/AFS-Image-2.jpg\" alt=\"\" width=\"471\" height=\"838\" srcset=\"https:\/\/hpro-web-assets.s3.amazonaws.com\/insights\/uploads\/2020\/05\/AFS-Image-2.jpg 2250w, https:\/\/hpro-web-assets.s3.amazonaws.com\/insights\/uploads\/2020\/05\/AFS-Image-2-768x1365.jpg 768w\" sizes=\"auto, (max-width: 471px) 100vw, 471px\" \/><\/a><p id=\"caption-attachment-7694\" class=\"wp-caption-text\">A feedback loop is created when sound is captured by a microphone, amplified, played through a loudspeaker, picked up again by the microphone, then re-amplified in a continuous loop, generating a howling, screeching sound.<\/p><\/div>\n<p>There are many ways to reduce the potential for feedback, including introducing noise gates, EQing problem frequencies, lowering gain, switching to a more directional microphone, or simply moving your mic closer to the sound source or out of a loudspeaker\u2019s line of fire. To maximize volume before feedback, live sound engineers \u201cring out\u201d P.A. systems by methodically bringing up system levels until feedback occurs, EQing out problem frequencies and repeating the process until the system is optimized.<\/p>\n<p>Feedback can occur at any frequency, and is often caused by a confluence of factors. If you\u2019re not a professional audio engineer, it\u2019s easy to find yourself chasing a solution through endless trial and error\u2014or worse yet, leaving your show up to chance. Luckily, there\u2019s a safety net. Automatic Feedback Suppression, and for more control, Advanced Feedback Suppression\u2122 (AFS), a dbx patented algorithm is available in several dbx products, which uses sophisticated filters and algorithms to take the guesswork out of feedback management.<\/p>\n<p>Automatic Feedback Suppression works like this: The algorithm monitors incoming audio for signs of feedback; when it detects feedback behavior, it places a narrow notch filter at each frequency that feeds back, reducing the gain of that frequency. Ultra-precise, 1\/80-octave filters carve out offending frequencies with pinpoint precision, preserving as much of the surrounding frequency spectrum as possible, which in turn preserves overall sound quality. This process takes just milliseconds, and is complete before the human ear can detect anything amiss.<\/p>\n<div id=\"attachment_7452\" style=\"width: 388px\" class=\"wp-caption alignright\"><a class=\"lightbox\" href=\"https:\/\/www.youtube.com\/watch?v=TEpq3gp3wwE\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7452\" class=\"wp-image-7452\" src=\"https:\/\/pro.harman.com\/insights\/wp-content\/uploads\/2020\/03\/03.2020-March-HPro-Amplified-Now-Shipping-IRX.jpg\" alt=\"\" width=\"378\" height=\"378\" srcset=\"https:\/\/hpro-web-assets.s3.amazonaws.com\/insights\/uploads\/2020\/03\/03.2020-March-HPro-Amplified-Now-Shipping-IRX.jpg 500w, https:\/\/hpro-web-assets.s3.amazonaws.com\/insights\/uploads\/2020\/03\/03.2020-March-HPro-Amplified-Now-Shipping-IRX-80x80.jpg 80w, https:\/\/hpro-web-assets.s3.amazonaws.com\/insights\/uploads\/2020\/03\/03.2020-March-HPro-Amplified-Now-Shipping-IRX-160x160.jpg 160w\" sizes=\"auto, (max-width: 378px) 100vw, 378px\" \/><\/a><p id=\"caption-attachment-7452\" class=\"wp-caption-text\">JBL IRX Series portable powered PA loudspeakers deliver class-leading output and clarity, total ease of use and an unrivaled feature set at our most affordable price point. Watch to learn more.<\/p><\/div>\n<p>Automatic Feedback Suppression is easy to use: Just set your desired level of suppression and it works automatically. Choose your level of control, from the totally preset press of a button Automatic Feedback Suppression feature in products like <a href=\"https:\/\/jblpro.com\/en\/product_families\/irx-series\">JBL IRX Series<\/a> loudspeakers to the advanced (AFS\u00ae) functions in processors such as the dbx <a href=\"https:\/\/dbxpro.com\/en\/products\/afs2\">AFS2<\/a> Advanced Feedback Suppression processor and <a href=\"https:\/\/dbxpro.com\/en-US\/products\/driverack-pa2\">DriveRack PA2<\/a>, which let you opt for a setup wizard or dig into finer parameter control, whether you\u2019re ringing out your system or protecting your system during your show.<\/p>\n<p>Automatic Feedback Suppression technology makes managing feedback fast and easy. With a little practice and thorough sound checks, you\u2019ll be a pro at stopping feedback in its tracks, so you can keep the focus where it belongs: on your performance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Squuueeeeeeaaaaccchh! You know it in an instant: that piercing, ear-melting shriek blaring out of your loudspeakers. It\u2019s feedback, and it\u2019s a showstopper\u2014in more ways than one. Feedback, the high-pitched wail generated when a signal loop builds between a sound system\u2019s audio input (here, a microphone)<br><a class=\"moretag signature-animation\" href=\"https:\/\/pro.harman.com\/insights\/education\/what-is-feedback-suppression-and-how-can-it-help-your-performances\/\">CONTINUE READING<\/a>","protected":false},"author":37,"featured_media":7691,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,20,8,22,9,29,36,31],"tags":[706,707,641],"application":[],"avlc":[],"brand":[],"product-category":[],"class_list":["post-7637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-barsclubs","category-corporate","category-education","category-harman-pro","category-hospitality","category-performing-arts","category-restaurants","category-retail","tag-afs2","tag-driverack-pa2","tag-irx-series"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What is Feedback Suppression and How Can It Help Your Performances? - HARMAN Professional Solutions Insights<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pro.harman.com\/insights\/education\/what-is-feedback-suppression-and-how-can-it-help-your-performances\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Feedback Suppression and How Can It Help Your Performances?\" \/>\n<meta property=\"og:description\" content=\"Squuueeeeeeaaaaccchh! You know it in an instant: that piercing, ear-melting shriek blaring out of your loudspeakers. It\u2019s feedback, and it\u2019s a showstopper\u2014in more ways than one. 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