{"id":44,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/band-pass-filter\/"},"modified":"2026-05-23T22:47:02","modified_gmt":"2026-05-23T22:47:02","slug":"band-pass-filter","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/bn\/glossary\/band-pass-filter\/","title":{"rendered":"What is a Band-Pass Filter? Frequency Band Selection"},"content":{"rendered":"<h1>Understanding Band-Pass Filters<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/balanset-1\/\" title=\"\u09aa\u09cb\u09b0\u09cd\u099f\u09c7\u09ac\u09b2 \u09ac\u09cd\u09af\u09be\u09b2\u09c7\u09a8\u09cd\u09b8\u09be\u09b0 \u098f\u09ac\u0982 \u0995\u09ae\u09cd\u09aa\u09a8 \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u0995 \u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0995\u09bf\u099f \u09aa\u09cb\u09b0\u09cd\u099f\u09c7\u09ac\u09b2 \u09ac\u09cd\u09af\u09be\u09b2\u09c7\u09a8\u09cd\u09b8\u09be\u09b0 \u098f\u09ac\u0982 \u0995\u09ae\u09cd\u09aa\u09a8 \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u0995\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/bn\/product-category\/devices\/\" rel=\"tag\">\u09a1\u09bf\u09ad\u09be\u0987\u09b8<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/bn\/product\/balanset-1\/\" title=\"\u09aa\u09cb\u09b0\u09cd\u099f\u09c7\u09ac\u09b2 \u09ac\u09cd\u09af\u09be\u09b2\u09c7\u09a8\u09cd\u09b8\u09be\u09b0 \u098f\u09ac\u0982 \u0995\u09ae\u09cd\u09aa\u09a8 \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u0995 \u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-1A\">\u09aa\u09cb\u09b0\u09cd\u099f\u09c7\u09ac\u09b2 \u09ac\u09cd\u09af\u09be\u09b2\u09c7\u09a8\u09cd\u09b8\u09be\u09b0 \u098f\u09ac\u0982 \u0995\u09ae\u09cd\u09aa\u09a8 \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u0995 \u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u0986\u09aa\u09a8\u09be\u09b0 \u0995\u09be\u09b0\u09cd\u099f\u09c7 \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09af\u09bc\u09c7\u099b\u09c7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  <\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/vibration-sensor\/\" title=\"\u0995\u09ae\u09cd\u09aa\u09a8 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A \u0995\u09ae\u09cd\u09aa\u09a8 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0 \u0995\u09cd\u09b2\u09cb\u099c-\u0986\u09aa\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/bn\/product-category\/parts\/\" rel=\"tag\">\u0985\u0982\u09b6<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/bn\/product\/vibration-sensor\/\" title=\"\u0995\u09ae\u09cd\u09aa\u09a8 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0\">\u0995\u09ae\u09cd\u09aa\u09a8 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u0986\u09aa\u09a8\u09be\u09b0 \u0995\u09be\u09b0\u09cd\u099f\u09c7 \u201cVibration sensor\u201d \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09af\u09bc\u09c7\u099b\u09c7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  <\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u0985\u09aa\u099f\u09bf\u0995\u09cd\u09af\u09be\u09b2 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0 (\u09b2\u09c7\u099c\u09be\u09b0 \u099f\u09cd\u09af\u09be\u0995\u09cb\u09ae\u09bf\u099f\u09be\u09b0)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0985\u09aa\u099f\u09bf\u0995\u09cd\u09af\u09be\u09b2 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0 (\u09b2\u09c7\u099c\u09be\u09b0 \u099f\u09cd\u09af\u09be\u0995\u09cb\u09ae\u09bf\u099f\u09be\u09b0)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/bn\/product-category\/parts\/\" rel=\"tag\">\u0985\u0982\u09b6<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/bn\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u0985\u09aa\u099f\u09bf\u0995\u09cd\u09af\u09be\u09b2 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0 (\u09b2\u09c7\u099c\u09be\u09b0 \u099f\u09cd\u09af\u09be\u0995\u09cb\u09ae\u09bf\u099f\u09be\u09b0)\">\u0985\u09aa\u099f\u09bf\u0995\u09cd\u09af\u09be\u09b2 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0 (\u09b2\u09c7\u099c\u09be\u09b0 \u099f\u09cd\u09af\u09be\u0995\u09cb\u09ae\u09bf\u099f\u09be\u09b0)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u0986\u09aa\u09a8\u09be\u09b0 \u0995\u09be\u09b0\u09cd\u099f\u09c7 \u201cOptical Sensor (Laser Tachometer)\u201d \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09af\u09bc\u09c7\u099b\u09c7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  <\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/balanset-4\/\" title=\"\u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera \u09b0\u09cb\u099f\u09b0 \u09ad\u09be\u09b0\u09b8\u09be\u09ae\u09cd\u09af \u0995\u09bf\u099f: \u09ac\u09b9\u09a8 \u0995\u09c7\u09b8, \u09ae\u09be\u09b2\u09cd\u099f\u09bf-\u099a\u09cd\u09af\u09be\u09a8\u09c7\u09b2 \u09b8\u09bf\u0997\u09a8\u09cd\u09af\u09be\u09b2 \u0995\u09a8\u09cd\u09a1\u09bf\u09b6\u09a8\u09be\u09b0, \u09b9\u09cd\u09af\u09be\u09a8\u09cd\u09a1\u09b9\u09c7\u09b2\u09cd\u09a1 \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u0995, \u099a\u09cc\u09ae\u09cd\u09ac\u0995 \u09ad\u09bf\u09a4\u09cd\u09a4\u09bf, \u0995\u09ae\u09cd\u09aa\u09a8 \u09b8\u09c7\u09a8\u09cd\u09b8\u09b0, \u098f\u09ac\u0982 \u0995\u09c1\u09a3\u09cd\u09a1\u09b2\u09c0 \u09a4\u09be\u09b0\u0964\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/bn\/product-category\/devices\/\" rel=\"tag\">\u09a1\u09bf\u09ad\u09be\u0987\u09b8<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/bn\/product\/balanset-4\/\" title=\"\u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-4\">\u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u0986\u09aa\u09a8\u09be\u09b0 \u0995\u09be\u09b0\u09cd\u099f\u09c7 \u201cBalanset-4\u201d \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09af\u09bc\u09c7\u099b\u09c7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  <\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/magnet-stand\/\" title=\"\u09ae\u09cd\u09af\u09be\u0997\u09a8\u09c7\u099f\u09bf\u0995 \u09b8\u09cd\u099f\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u0987\u09a8\u09b8\u09be\u0987\u099c-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u099a\u09c1\u09ae\u09cd\u09ac\u0995 \u09ac\u09c7\u09b8\u0964\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/bn\/product-category\/parts\/\" rel=\"tag\">\u0985\u0982\u09b6<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/bn\/product\/magnet-stand\/\" title=\"\u09ae\u09cd\u09af\u09be\u0997\u09a8\u09c7\u099f\u09bf\u0995 \u09b8\u09cd\u099f\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u0987\u09a8\u09b8\u09be\u0987\u099c-60-kgf\">\u09ae\u09cd\u09af\u09be\u0997\u09a8\u09c7\u099f\u09bf\u0995 \u09b8\u09cd\u099f\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u0987\u09a8\u09b8\u09be\u0987\u099c-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u0986\u09aa\u09a8\u09be\u09b0 \u0995\u09be\u09b0\u09cd\u099f\u09c7 \u201cMagnetic Stand Insize-60-kgf\u201d \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09af\u09bc\u09c7\u099b\u09c7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  <\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/bn\/product\/reflective-tape\/\" title=\"\u09aa\u09cd\u09b0\u09a4\u09bf\u09ab\u09b2\u09bf\u09a4 \u099f\u09c7\u09aa\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u09aa\u09cd\u09b0\u09a4\u09bf\u09ab\u09b2\u09bf\u09a4 \u099f\u09c7\u09aa\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/bn\/product-category\/parts\/\" rel=\"tag\">\u0985\u0982\u09b6<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/bn\/product\/reflective-tape\/\" title=\"\u09aa\u09cd\u09b0\u09a4\u09bf\u09ab\u09b2\u09bf\u09a4 \u099f\u09c7\u09aa\">\u09aa\u09cd\u09b0\u09a4\u09bf\u09ab\u09b2\u09bf\u09a4 \u099f\u09c7\u09aa<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cReflective tape\u201d\" rel=\"nofollow\" 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&quot;\u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-1A&quot; OEM\">\u09a1\u09be\u09af\u09bc\u09a8\u09be\u09ae\u09bf\u0995 \u09ac\u09cd\u09af\u09be\u09b2\u09c7\u09a8\u09cd\u09b8\u09be\u09b0 &quot;\u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-1A&quot; OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + \u09ad\u09cd\u09af\u09be\u099f (\u09af\u09a6\u09bf \u09aa\u09cd\u09b0\u09af\u09cb\u099c\u09cd\u09af \u09b9\u09af\u09bc)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  \" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/bn\/wp-json\/wp\/v2\/glossary\/44?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u0986\u09aa\u09a8\u09be\u09b0 \u0995\u09be\u09b0\u09cd\u099f\u09c7 \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d \u09af\u09cb\u0997 \u0995\u09b0\u09be \u09b9\u09af\u09bc\u09c7\u099b\u09c7\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">\u0995\u09be\u09b0\u09cd\u099f\u09c7 \u09af\u09cb\u0997 \u0995\u09b0\u09c1\u09a8  <\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p>A <strong>\u09ac\u09cd\u09af\u09be\u09a8\u09cd\u09a1-\u09aa\u09be\u09b8 \u09ab\u09bf\u09b2\u09cd\u099f\u09be\u09b0<\/strong> (BPF) is a frequency-selective signal-processing element that lets <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/vibration\/\">vibration<\/a> components inside a chosen frequency band pass through while attenuating everything both below and above that band. It is, in effect, the combination of a <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/high-pass-filter\/\">\u0989\u099a\u09cd\u099a-\u09aa\u09be\u09b8 \u09ab\u09bf\u09b2\u09cd\u099f\u09be\u09b0<\/a> (which blocks low frequencies) and a <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/low-pass-filter\/\">\u09b2\u09cb-\u09aa\u09be\u09b8 \u09ab\u09bf\u09b2\u09cd\u099f\u09be\u09b0<\/a> (which blocks high frequencies), forming a &#8220;window&#8221; that admits only a selected middle range. Every band-pass filter is described by three numbers: its centre frequency, its bandwidth, and its order or steepness. In vibration work the BPF is indispensable for <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/envelope-analysis\/\">\u098f\u09a8\u09ad\u09c7\u09b2\u09aa \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u09a3<\/a>, for focused diagnostics on a particular range, and for lifting weak signals out of noise by rejecting everything outside the band of interest. It is one of the most-used tools in the wider toolbox of <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/signal-filtering\/\">\u09b8\u0982\u0995\u09c7\u09a4 \u09aa\u09b0\u09bf\u09b8\u09cd\u09b0\u09be\u09ac\u09a3<\/a>.<\/p>\n<h2>1. Filter Parameters<\/h2>\n<h3>Centre Frequency (f\u2080)<\/h3>\n<ul>\n<li>The middle of the passband and the point of maximum filter response.<\/li>\n<li>Chosen to match the frequency content of interest \u2014 typically a known resonance or fault frequency.<\/li>\n<\/ul>\n<h3>Bandwidth (BW)<\/h3>\n<ul>\n<li><strong>Definition:<\/strong> the frequency span between the \u22123 dB points, f<sub>high<\/sub> \u2212 f<sub>low<\/sub>.<\/li>\n<li><strong>Narrow band:<\/strong> BW &lt; 10% of f\u2080 \u2014 highly selective.<\/li>\n<li><strong>Wide band:<\/strong> BW &gt; 50% of f\u2080 \u2014 less selective.<\/li>\n<li><strong>Q factor:<\/strong> Q = f\u2080 \/ BW; a higher Q means a narrower, more selective filter.<\/li>\n<\/ul>\n<h3>Filter Characteristics<\/h3>\n<ul>\n<li><strong>Lower cutoff (f<sub>low<\/sub>):<\/strong> where the lower skirt falls to \u22123 dB.<\/li>\n<li><strong>Upper cutoff (f<sub>high<\/sub>):<\/strong> where the upper skirt falls to \u22123 dB.<\/li>\n<li><strong>Shape factor:<\/strong> the ratio of stopband to passband width \u2014 a measure of how sharply the filter cuts off.<\/li>\n<\/ul>\n<h2>\u0968. \u0995\u09ae\u09cd\u09aa\u09a8 \u09ac\u09bf\u09b6\u09cd\u09b2\u09c7\u09b7\u09a3\u09c7 \u09aa\u09cd\u09b0\u09af\u09bc\u09cb\u0997\u09b8\u09ae\u09c2\u09b9<\/h2>\n<h3>2.1 Envelope Analysis \u2014 the Primary Use<\/h3>\n<p>The band-pass filter is the critical first step in detecting rolling-element bearing defects:<\/p>\n<ul>\n<li><strong>Band selection:<\/strong> typically 500 Hz\u201310 kHz or 1 kHz\u201320 kHz.<\/li>\n<li><strong>Purpose:<\/strong> isolate the high-frequency structural resonances that bearing impacts excite.<\/li>\n<li><strong>\u09aa\u09cd\u09b0\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09be:<\/strong> BPF \u2192 envelope detection (<a href=\"https:\/\/vibromera.eu\/bn\/glossary\/demodulation\/\">demodulation<\/a>) \u2192 <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/fft\/\">FFT<\/a> of the envelope.<\/li>\n<li><strong>Result:<\/strong> the <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/bearing-fault-frequencies\/\">\u09ac\u09c7\u09af\u09bc\u09be\u09b0\u09bf\u0982 \u09a4\u09cd\u09b0\u09c1\u099f\u09bf \u09ab\u09cd\u09b0\u09bf\u0995\u09cb\u09af\u09bc\u09c7\u09a8\u09cd\u09b8\u09bf<\/a> stand out clearly in the resulting <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/envelope-spectrum\/\">\u0996\u09be\u09ae \u09ac\u09b0\u09cd\u09a3\u09be\u09b2\u09c0<\/a>.<\/li>\n<\/ul>\n<h3>2.2 Resonance Band Analysis<\/h3>\n<p>Filtering tightly around a structural or bearing <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/resonance\/\">resonance<\/a> isolates the energy at that mode from all other frequencies, letting you assess the excitation and response at a specific resonance \u2014 a powerful aid in resonance troubleshooting.<\/p>\n<h3>2.3 Frequency-Range Isolation<\/h3>\n<p>A BPF can focus on a chosen diagnostic range \u2014 say 10\u2013100 Hz for low-frequency work \u2014 stripping away low-frequency drift and high-frequency noise to clarify the components you care about.<\/p>\n<h3>2.4 Gear Mesh Isolation<\/h3>\n<p>Centring the band on the <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/gear-mesh-frequency\/\">\u0997\u09bf\u09af\u09bc\u09be\u09b0 \u09ae\u09c7\u09b6 \u09ab\u09cd\u09b0\u09bf\u0995\u09cb\u09af\u09bc\u09c7\u09a8\u09cd\u09b8\u09bf<\/a> passes that peak and its sidebands while rejecting other gear stages and bearing frequencies, enabling focused gear analysis. Where the goal is to follow a varying speed rather than a fixed band, a <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/tracking-filter\/\">\u099f\u09cd\u09b0\u09cd\u09af\u09be\u0995\u09bf\u0982 \u09ab\u09bf\u09b2\u09cd\u099f\u09be\u09b0<\/a> performs the same isolation referenced to shaft order.<\/p>\n<h2>3. Band-Pass Filter Design<\/h2>\n<h3>Cascaded Low-Pass and High-Pass<\/h3>\n<p>The most common implementation simply chains the two simpler filters:<\/p>\n<ul>\n<li>A high-pass section blocks everything below f<sub>low<\/sub>.<\/li>\n<li>A low-pass section blocks everything above f<sub>high<\/sub>.<\/li>\n<li>In series they form the band-pass, each section contributing to the overall selectivity.<\/li>\n<\/ul>\n<h3>Direct Band-Pass Design<\/h3>\n<p>Alternatively the filter is optimised as a single stage rather than a cascade. This is more complex to design but can achieve better characteristics, and it is reserved for specialised applications. A close relative is the <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/notch-filter\/\">notch filter<\/a>, which does the inverse job \u2014 rejecting one narrow band while passing everything else.<\/p>\n<h2>4. Practical Considerations<\/h2>\n<h3>Bandwidth Trade-Offs<\/h3>\n<p><strong>Narrow bandwidth<\/strong> gives better selectivity and stronger rejection of adjacent frequencies, but it may miss frequency drift and demands precise tuning \u2014 best when the frequency of interest is known and stable. <strong>Wide bandwidth<\/strong> captures frequency variation and is far less fussy to tune, at the cost of weaker rejection of nearby unwanted content \u2014 best when the frequency wanders or a whole range matters.<\/p>\n<h3>Choosing the Band for Envelope Analysis<\/h3>\n<ul>\n<li><strong>Typical bands:<\/strong> 500\u20132,000 Hz, 1,000\u20135,000 Hz, and 5,000\u201320,000 Hz.<\/li>\n<li><strong>Selection:<\/strong> pick the band with the strongest bearing-resonance excitation.<\/li>\n<li><strong>Verify:<\/strong> check the raw acceleration <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/spectrum\/\">spectrum<\/a> to locate that resonance first.<\/li>\n<li><strong>Optimise:<\/strong> adjust the band to maximise the bearing-defect signal.<\/li>\n<\/ul>\n<h2>5. Filter Effects on the Signal<\/h2>\n<h3>Time-Waveform Effects<\/h3>\n<p>A band-pass-filtered <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/time-waveform\/\">time waveform<\/a> shows only the passband content. With a narrow band it appears as a modulated carrier; low-frequency variations and high-frequency noise are gone, which can greatly simplify interpretation.<\/p>\n<h3>Spectrum Effects<\/h3>\n<p>In the spectrum, passband amplitudes are preserved while stopband amplitudes are cut by a typical 40\u201380 dB. The result is a cleaner display focused on the band of interest, with a lowered noise floor wherever the noise lay outside the passband.<\/p>\n<h2>6. Digital vs. Analog, and Bands by Frequency Range<\/h2>\n<h3>Digital vs. Analog Filters<\/h3>\n<p><strong>\u098f\u09a8\u09be\u09b2\u0997<\/strong> band-pass filters are implemented in hardware in the signal path, operate in real time, have fixed characteristics once built, and are used in <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/aliasing\/\">anti-aliasing<\/a> and signal conditioning. <strong>Digital<\/strong> filters process the signal in software after digitisation, offer adjustable parameters, and can be applied or removed even after the data is collected \u2014 which is why modern analysers provide extensive digital BPF options.<\/p>\n<h3>Common Bands by Range<\/h3>\n<ul>\n<li><strong>Low-frequency (10\u2013200 Hz):<\/strong> unbalance and misalignment analysis, low-speed machinery, and foundation or structural vibration.<\/li>\n<li><strong>Mid-frequency (200\u20132,000 Hz):<\/strong> gear mesh frequencies, blade and vane passing frequencies, and the lower bearing fault frequencies.<\/li>\n<li><strong>High-frequency (2\u201340 kHz):<\/strong> bearing-defect envelope analysis, high-frequency impacts, and bearing-resonance excitation.<\/li>\n<\/ul>\n<h2>7. Band-Pass Filtering in the Field<\/h2>\n<p>In practice, the band-pass filter is rarely used alone \u2014 it is a stage inside a measurement chain that also samples, windows, and transforms the signal, so the chosen band must sit within the instrument&#8217;s sampling bandwidth. A portable two-channel analyser such as the <a href=\"https:\/\/vibromera.eu\/bn\/%e0%a6%aa%e0%a6%a3%e0%a7%8d%e0%a6%af\/balanset-1\/\">\u09ac\u09cd\u09af\u09be\u09b2\u09be\u09a8\u09b8\u09c7\u099f-\u09e7\u098f<\/a> measures vibration across roughly 5 Hz to 1 kHz and resolves the 1\u00d7 <a href=\"https:\/\/vibromera.eu\/bn\/glossary\/phase\/\">\u09ac\u09bf\u09b8\u09cd\u09a4\u09be\u09b0 \u098f\u09ac\u0982 \u09a6\u09b6\u09be<\/a> needed for on-site balancing; band-pass and envelope techniques then complement that workflow when an engineer needs to confirm whether a high-frequency bearing defect, rather than simple unbalance, is the true source of the trouble. When setting up such an analysis, the <a href=\"https:\/\/vibromera.eu\/bn\/calculators\/fft-resolution-calculator\/\">FFT \u09b0\u09c7\u099c\u09cb\u09b2\u09bf\u0989\u09b6\u09a8 \u0995\u09cd\u09af\u09be\u09b2\u0995\u09c1\u09b2\u09c7\u099f\u09b0<\/a> helps match the line count and bandwidth to the band you intend to examine, so closely spaced fault lines and sidebands are not smeared together. Mastering band-pass selection \u2014 above all for envelope analysis and frequency-range isolation \u2014 is essential to extracting clear diagnostic information from a complex vibration signature.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/bn\/glossary\/\">\u2190 \u09aa\u09cd\u09b0\u09a7\u09be\u09a8 \u09b8\u09c2\u099a\u09bf\u09a4\u09c7 \u09ab\u09bf\u09b0\u09c1\u09a8<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about band-pass filters in vibration analysis, signal processing tools that pass frequencies within a selected band while blocking all others, essential for envelope analysis.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-44","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/glossary\/44","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/glossary\/44\/revisions"}],"predecessor-version":[{"id":101372,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/glossary\/44\/revisions\/101372"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}