{"id":244,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/sound-pressure-level\/"},"modified":"2026-05-23T22:31:25","modified_gmt":"2026-05-23T22:31:25","slug":"sound-pressure-level","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ms\/glossary\/sound-pressure-level\/","title":{"rendered":"Apakah Tahap Tekanan Bunyi? Pengukuran Bunyi"},"content":{"rendered":"<h1>Memahami Tahap Tekanan Bunyi<\/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\/ms\/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\/ms\/product\/balanset-1\/\" title=\"Pengimbang mudah alih &amp; Penganalisis getaran Balanset-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 kit lengkap penyeimbang mudah alih dan penganalisis getaran\" 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\/ms\/product-category\/devices\/\" rel=\"tag\">Peranti<\/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\/ms\/product\/balanset-1\/\" title=\"Pengimbang mudah alih &amp; Penganalisis getaran Balanset-1A\">Pengimbang mudah alih &amp; Penganalisis getaran Balanset-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> + VAT (jika berkenaan)<\/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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ms\/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\/ms\/product\/vibration-sensor\/\" title=\"Penderia getaran\">\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=\"Pandangan dekat sensor getaran Balanset-1A\" 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\/ms\/product-category\/parts\/\" rel=\"tag\">bahagian<\/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\/ms\/product\/vibration-sensor\/\" title=\"Penderia getaran\">Penderia getaran<\/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> + VAT (jika berkenaan)<\/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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ms\/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\/ms\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Penderia Optik (Takometer Laser)\">\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=\"Penderia Optik (Takometer Laser)\" 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\/ms\/product-category\/parts\/\" rel=\"tag\">bahagian<\/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\/ms\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Penderia Optik (Takometer Laser)\">Penderia Optik (Takometer Laser)<\/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> + VAT (jika berkenaan)<\/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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ms\/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\/ms\/product\/balanset-4\/\" title=\"Balanset-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=\"Kit pengimbangan rotor Vibromera: kes pembawa, perapi isyarat berbilang saluran, penganalisis genggam, tapak magnet, sensor getaran dan kabel bergelung.\" 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\/ms\/product-category\/devices\/\" rel=\"tag\">Peranti<\/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\/ms\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-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> + VAT (jika berkenaan)<\/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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ms\/wp-json\/wp\/v2\/glossary\/244?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=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ms\/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\/ms\/product\/magnet-stand\/\" title=\"Magnetic Stand Insize-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=\"Pangkalan magnet.\" 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\/ms\/product-category\/parts\/\" rel=\"tag\">bahagian<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 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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><strong>Tahap tekanan bunyi<\/strong> (SPL) ialah ukuran logaritma tekanan akustik relatif kepada rujukan, dinyatakan dalam desibel (dB). Bagi mesin, ia mengkuantifikasi intensiti pelepasan bunyi \u2014 kekuatan bunyi yang dipancarkan oleh mesin \u2014 diukur dengan mikrofon atau meter tahap bunyi pada jarak yang dinyatakan. SPL berkait rapat dengan <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/vibration\/\">getaran<\/a>, kerana permukaan bergetar memancarkan bunyi, yang menjadikan pengukuran akustik pelengkap semula jadi kepada <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/vibration-analysis\/\">Analisis getaran<\/a> untuk menilai keadaan mesin \u2014 terutamanya bagi kecacatan aerodinamik, gear dan galas yang menghasilkan ciri rentetan nada atau jalur lebar yang tersendiri.<\/p>\n<p>Walaupun SPL terutamanya merupakan metrik kesihatan pekerjaan dan alam sekitar \u2014 perlindungan pendengaran, peraturan bunyi, had komuniti \u2014 ia mempunyai nilai diagnostik sebenar. Perubahan bunyi sering mendahului atau mengiringi kerosakan mekanikal, dan spektrum akustik boleh mengenal pasti kerosakan tertentu melalui corak frekuensi yang mencerminkan corak yang dilihat dalam getaran. <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/spectrum\/\">spektrum<\/a>.<\/p>\n<h2>1. Matematik: Mengapa desibel?<\/h2>\n<p>SPL ditakrifkan sebagai:<\/p>\n<blockquote><p><strong>SPL (dB) = 20 \u00d7 log\u2081\u2080(P \/ P\u2080)<\/strong>, di mana P ialah tekanan bunyi yang diukur dalam pascal dan P\u2080 = 20 \u00b5Pa, tekanan rujukan yang sepadan dengan ambang pendengaran manusia.<\/p><\/blockquote>\n<p>Logaritma wujud atas sebab praktikal: telinga mengatasi julat tekanan yang sangat luas \u2014 daripada bunyi paling lembut yang boleh didengar hingga ambang kesakitan merangkumi perbezaan tekanan kira-kira sejuta kali ganda. Skala logaritma memampatkan julat itu ke dalam 0\u2013120+ dB yang mudah diurus. Ia juga menjelaskan aritmetik yang mengejutkan pemula: kerana skala itu bersifat logaritma, menggandakan bunyi <em>kuasa<\/em> menambah hanya 3 dB, dan dua mesin yang sama kuat bunyinya bersama-sama adalah 3 dB lebih kuat daripada satu \u2014 bukan dua kali ganda kuat. Oleh itu, menggabungkan sumber adalah penjumlahan logaritma, yang mudah diuruskan dengan kami <a href=\"https:\/\/vibromera.eu\/ms\/calculators\/noise-level-addition\/\">Kalkulator Penambahan Tahap Bunyi<\/a> atau menukarkan antara tekanan dan desibel dengan <a href=\"https:\/\/vibromera.eu\/ms\/calculators\/sound-level-converter\/\">Penukar Tahap Bunyi<\/a>.<\/p>\n<p>Sebagai panduan lapangan anggaran untuk skala: 0 dB ialah ambang pendengaran; 30\u201340 dB bilik yang senyap; 60\u201370 dB perbualan biasa; 80\u201390 dB mesin bising di mana pelindung pendengaran disyorkan; 100\u2013110 dB mesin yang sangat bising di mana pelindung pendengaran diperlukan; dan 120 dB ke atas ambang kesakitan, dengan risiko kerosakan pendengaran segera.<\/p>\n<h2>2. Cara SPL diukur<\/h2>\n<h3>Alat pengukur paras bunyi<\/h3>\n<ul>\n<li>Mikrofon tepat yang membekalkan meter yang menerapkan pemberatan frekuensi dan pemberatan masa serta memaparkan hasilnya dalam dB SPL.<\/li>\n<li>Alat diklasifikasikan sebagai Kelas 1 (ketepatan) atau Kelas 2 (tujuan umum) di bawah <strong>IEC 61672<\/strong>.<\/li>\n<\/ul>\n<h3>Jarak pengukuran<\/h3>\n<ul>\n<li><strong>Medan dekat:<\/strong> kurang daripada 1 m dari sumber, berguna untuk mengenal pasti komponen yang bising.<\/li>\n<li><strong>Jarak jauh:<\/strong> melebihi 1 m, di mana keadaan medan bebas terpakai; 1 m adalah piawaian biasa untuk mesin.<\/li>\n<li>Dalam medan bebas, SPL menurun kira-kira <strong>6 dB bagi setiap penggandaan jarak<\/strong> \u2014 asas bagi <a href=\"https:\/\/vibromera.eu\/ms\/calculators\/noise-distance-attenuation\/\">Kalkulator Pelemahan Jarak Bunyi<\/a>.<\/li>\n<\/ul>\n<h3>Penimbangan frekuensi<\/h3>\n<ul>\n<li><strong>Penimbangan A (dBA):<\/strong> membentuk tindak balas untuk meniru kepekaan telinga; yang paling biasa digunakan untuk penilaian bunyi.<\/li>\n<li><strong>Penimbangan C (dBC):<\/strong> Relatif rata, mengekalkan kandungan frekuensi rendah untuk bunyi puncak dan bunyi impulsif.<\/li>\n<li><strong>Z \/ linear (dBZ):<\/strong> Tiada pemberatan; setiap frekuensi dikira sama rata, lebih digemari untuk analisis kejuruteraan.<\/li>\n<\/ul>\n<h2>3. Hubungan dengan getaran<\/h2>\n<h3>Radiasi bunyi daripada permukaan yang bergetar<\/h3>\n<ul>\n<li>Permukaan bergetar menolak udara di sekelilingnya dan memancarkan gelombang bunyi.<\/li>\n<li>Kuasa bunyi terradiasi meningkat secara kasar dengan <strong>kelajuan\u00b2 \u00d7 kawasan<\/strong>, jadi permukaan yang lebih tinggi <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/velocity\/\">halaju<\/a> Secara amnya bermaksud SPL yang lebih tinggi.<\/li>\n<li>Pautan itu tidak tepat, bagaimanapun \u2014 kecekapan radiasi berbeza dengan ketara mengikut frekuensi dan geometri panel, jadi dua permukaan yang bergetar sama boleh memancarkan radiasi dengan sangat berbeza.<\/li>\n<\/ul>\n<h3>Korelasi diagnostik<\/h3>\n<ul>\n<li><strong>Masalah galas:<\/strong> desis atau deru berfrekuensi tinggi.<\/li>\n<li><strong>Masalah gear:<\/strong> suara rungutan ciri pada frekuensi mesh.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/unbalance\/\">Ketidakseimbangan<\/a>:<\/strong> Gumaman frekuensi rendah pada 1\u00d7 <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/running-speed\/\">kelajuan kendalian<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/cavitation\/\">Peronggaan<\/a>:<\/strong> bunyi retak atau letupan rawak apabila gelembung wap runtuh.<\/li>\n<\/ul>\n<h2>4. Analisis Spektrum Akustik<\/h2>\n<p>Seperti juga dengan getaran, menukarkan isyarat bunyi kepada spektrum frekuensi memisahkan bunyi yang kompleks kepada bahagian-bahagian yang boleh didiagnosis.<\/p>\n<h3>Komponen tonal<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/gear-mesh-frequency\/\">mesh gear<\/a>:<\/strong> suara murni pada frekuensi penglibatan gigi, sering dengan <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/sidebands\/\">jalur sisi<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/blade-passing-frequency\/\">Penyampaian bilah<\/a>:<\/strong> suara nada pada frekuensi laluan bilah kipas atau pemampat.<\/li>\n<li><strong>Elektrik:<\/strong> suara bergumam 120\/100 Hz daripada motor pada frekuensi dua kali frekuensi baris.<\/li>\n<li><strong>Tona bunyi galas:<\/strong> sekeluarga <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/bearing-fault-frequencies\/\">kekerapan kerosakan galas<\/a> harmonik.<\/li>\n<\/ul>\n<h3>Bunyi jalur lebar<\/h3>\n<ul>\n<li><strong>Aerodinamik:<\/strong> turbulen dan bunyi aliran.<\/li>\n<li><strong>Peronggaan:<\/strong> keruntuhan buih rawak merentasi julat yang luas.<\/li>\n<li><strong>Kerosakan galas:<\/strong> peningkatan jalur lebar apabila permukaan merosot.<\/li>\n<li><strong>Geseran:<\/strong> emisi rawak berterusan.<\/li>\n<\/ul>\n<h2>5. Aplikasi<\/h2>\n<p>Pengukuran SPL mendapat tempatnya dalam empat bidang praktikal:<\/p>\n<ul>\n<li><strong>Pemantauan keadaan:<\/strong> Melengkapi data getaran, sering memberikan petunjuk terawal tentang kecacatan galas \u2014 bunyi boleh meningkat sebelum getaran sarung \u2014 dan menjejaki keausan gear melalui perubahan kualiti bunyi.<\/li>\n<li><strong>Kawalan kualiti:<\/strong> pemeriksaan penerimaan peralatan baharu terhadap had bunyi, pengesahan selepas pembaikan, dan pemeriksaan kualiti produk dalam pembuatan.<\/li>\n<li><strong>Pematuhan peraturan:<\/strong> had pendedahan pekerjaan (OSHA, arahan EU), had bunyi komuniti dan spesifikasi peralatan, disokong oleh alat dos pendedahan seperti <a href=\"https:\/\/vibromera.eu\/ms\/calculators\/noise-exposure-calculator\/\">Kalkulator Pendedahan Bunyi<\/a>.<\/li>\n<li><strong>Penyelesaian masalah:<\/strong> menentukan lokasi sumber bunyi, menilai penyumbang kepada bunyi keseluruhan kemudahan, dan mengesahkan kesan langkah-langkah pengurangan bunyi.<\/li>\n<\/ul>\n<p>Sebagai panduan am tentang apa yang boleh dijangkakan, paras A-berwajaran tipikal pada 1 m adalah sekitar 70\u201385 dBA untuk motor elektrik, 75\u201390 dBA untuk pam sentrifugal, 80\u2013100 dBA untuk kipas dan tiup, 75\u201395 dBA untuk kotak gear, 85\u2013105 dBA untuk pemampat, dan 95\u2013110 dBA untuk enjin diesel.<\/p>\n<h2>6. Kebisingan sebagai Penunjuk Diagnostik<\/h2>\n<p>Dua jenis perubahan yang penting apabila mendengar mesin dari masa ke masa. Satu <strong>tingkat yang meningkat<\/strong> menunjukkan kerosakan galas (mengisar atau berderit), keausan gear (deru yang semakin kuat), masalah pelinciran (bunyi geseran yang semakin kuat), atau <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/looseness\/\">kelonggaran<\/a> (berderak-derak). Satu <strong>perubahan watak<\/strong> \u2014 kemunculan nada baru, frekuensi berubah, bunyi berselang-seli atau bunyi yang berubah-ubah \u2014 sama pentingnya, menandakan masalah yang sedang berkembang walaupun bacaan dBA keseluruhan hampir tidak berubah.<\/p>\n<p>Kaedah akustik memang mempunyai had: meter SPL mendengar <em>segala-galanya<\/em> di kawasan itu, jadi mesin jiran yang bising, pantulan daripada dinding dan bunyi latar tanaman semuanya mencemarkan bacaan dengan cara yang dielakkan oleh sensor sentuhan. Itulah sebabnya, untuk mengesahkan kerosakan mekanikal dan terutamanya untuk membetulkannya, jurutera beralih kepada pengukuran getaran secara langsung. Apabila tinjauan bunyi mencadangkan ketidakseimbangan, penganalisis mudah alih dua saluran seperti <a href=\"https:\/\/vibromera.eu\/ms\/product\/balanset-1\/\">Balanset-1A<\/a> boleh mengesahkannya dengan mengukur amplitud dan fasa 1\u00d7 pada galas dan kemudian membimbangkan rotor di tempatnya \u2014 mengasingkan sumber mekanikal sebenar yang hanya dapat diisyaratkan oleh mikrofon.<\/p>\n<h2>7. Piawaian Pengukuran<\/h2>\n<ul>\n<li><strong>IEC 61672:<\/strong> spesifikasi untuk meter paras bunyi.<\/li>\n<li><strong>ISO 3744:<\/strong> penentuan kuasa bunyi daripada tekanan bunyi.<\/li>\n<li><strong>ISO 1680:<\/strong> kod ujian bunyi untuk mesin elektrik berputar.<\/li>\n<li><strong>ANSI S12.19:<\/strong> pengukuran bunyi mesin.<\/li>\n<\/ul>\n<p>Digunakan bersama getaran, SPL melengkapkan gambaran menyeluruh tentang kesihatan mesin: mikrofon kadangkala memberi amaran terlebih dahulu, <a href=\"https:\/\/vibromera.eu\/ms\/glossary\/accelerometer\/\">akselerometer<\/a> mengesahkan dan menentukan lokasi, dan bersama-sama mereka memberikan penilaian yang lebih lengkap daripada yang dapat diberikan oleh salah satunya secara bersendirian.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ms\/glossary\/\">\u2190 Kembali ke Indeks Utama<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Ketahui tentang tahap tekanan bunyi (SPL), pengukuran hingar akustik dalam desibel yang menunjukkan pelepasan hingar jentera, dikaitkan dengan getaran untuk penilaian keadaan menyeluruh.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,113],"tags":[],"class_list":["post-244","glossary","type-glossary","status-publish","hentry","category-glossary","category-measurement"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary\/244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary\/244\/revisions"}],"predecessor-version":[{"id":101259,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/glossary\/244\/revisions\/101259"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/media?parent=244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/categories?post=244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ms\/wp-json\/wp\/v2\/tags?post=244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}