{"id":1517,"date":"2020-07-02T01:30:48","date_gmt":"2020-07-02T01:30:48","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=1517"},"modified":"2020-07-02T01:30:48","modified_gmt":"2020-07-02T01:30:48","slug":"understanding-decibels-part-1","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/","title":{"rendered":"Understanding decibels (part 1)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/#What_does_the_decibel_or_db_measure\" >What does the decibel or db measure?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/#What_is_a_decibel\" >What is a decibel?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/#Why_decibels\" >Why decibels?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/#Decibels_are_not_linear\" >Decibels are not linear<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/#Decibels_express_a_relationship\" >Decibels express a relationship<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_does_the_decibel_or_db_measure\"><\/span>What does the decibel or db measure?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Decibels are widely used in audio and are often misinterpreted. These articles provide a practical understanding of the use of decibels in audio work. But first, some basic questions and answers about decibels.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_a_decibel\"><\/span>What is a decibel?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A decibel is a tenth of a Bel, a level unit, named after Alexander Graham Bell. A Bel is a very large unit, so the prefix deci (one tenth) is used. A decibel uses a logarithmic scale, not a linear scale like volts or watts, see below.<\/p>\n<p>There is no absolute level called the decibel. A decibel expresses a relationship. It is related to something. Unfortunately, what is related is often not mentioned when claiming a decibel reading. For example, the line out of the mixer may be -10dB, which generally means it is 10dB below 0dB.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_decibels\"><\/span>Why decibels?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>So why use a decibel? You may have noticed that the volume control on most hi-fi amps is marked in decibels, just like the marks on the mixer level controls. This is because our hearing range is so vast that, to use a linear scale, we must use numbers between 0 and 1,000,000!<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Decibels_are_not_linear\"><\/span>Decibels are not linear<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A secret to understanding decibels is to note that decibels are not linear. Another example of a nonlinear relationship is between the side of a square and the area of \u200b\u200ba square.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/geoffthegreygeek.com\/wp-content\/uploads\/side-vs-area.png\" alt=\"decibels\" width=\"681\" height=\"214\" \/><\/p>\n<p>divisible is not linear like square side and area In this example, you can see that increasing the lateral measurement does not have an equivalent increase in area, but a larger increase. Also, doubling the length of the side does not double the area, it is much more than double! This is an example of a nonlinear relationship: in this case, a small increase in the side refers to a different increase in the area. Decibels are similar. A small variation in decibels refers to a different variation in the relationship between the two levels compared.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Decibels_express_a_relationship\"><\/span>Decibels express a relationship<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When we talk about audio levels, we observe voltages or amplitudes of sound waves. (Note: Power measurements (such as power differences in an amplifier) \u200b\u200buse a similar but different formula.) But without going into formulas, etc., we must accept the following summary of the linear relations of tensions and decibels. (I&#8217;m not showing formulas or calculations because I think most people skip them anyway, and if you like formulas any search engine will give you as many as you want)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What does the decibel or db measure? Decibels are widely used in audio and are often misinterpreted. These articles provide a practical understanding of the use of decibels in audio work. But first, some basic questions and answers about decibels. What is a decibel? A decibel is a tenth of a Bel, a level unit, &hellip; <a href=\"https:\/\/mp4gain.com\/mp4gain\/understanding-decibels-part-1\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Understanding decibels (part 1)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[36341,36262,36261,36263,36260,36259,36258,36264,36265,36270,36272,36271,36268,36266,36269,36267,36273,36296,36306,36305,36304,36339,36274,36281,36278,36280,36277,36275,36276,36279,36284,36283,36285,36282,36290,36292,36293,36295,36294,36291,36286,36307,36298,36297,36326,36300,36299,36303,36301,36302,36310,36312,36308,36309,36313,36311,36314,36315,36288,36289,36287,36317,36316,36319,36320,36318,36321,36324,36322,36323,36325,36327,36329,36328,36330,36333,36336,36337,36338,36331,36332,36335,36334,36340],"class_list":["post-1517","post","type-post","status-publish","format-standard","hentry","category-audio-video","tag-100-decibel-would-correspond-to","tag-are-decibels-a-logarithmic-scale","tag-are-decibels-additive","tag-are-decibels-cumulative","tag-are-decibels-exponential","tag-are-decibels-linear","tag-are-decibels-logarithmic","tag-are-decibels-measured-on-a-logarithmic-scale","tag-are-decibels-metric","tag-can-200-decibels-kill-a-human","tag-can-70-decibels-damage-hearing","tag-can-80-decibels-damage-hearing","tag-can-decibels-be-added","tag-can-decibels-be-negative","tag-can-decibels-cause-damage","tag-can-decibels-kill-you","tag-can-high-decibels-kill-you","tag-decibels-how-loud-is-too-loud","tag-decibels-is-a-gunshot","tag-decibels-is-a-measure-of","tag-decibels-is-the-unit-of","tag-decibels-will-kill-you","tag-do-decibels-add","tag-do-decibels-double","tag-do-decibels-increase-exponentially","tag-do-decibels-measure-amplitude","tag-do-decibels-measure-frequency","tag-do-decibels-measure-loudness","tag-do-decibels-measure-pitch","tag-do-decibels-stack","tag-does-decibels-affect-frequency","tag-does-decibels-increase-with-volume","tag-does-decibels-mean","tag-does-decibels-measure-pitch","tag-does-sound-have-decibels","tag-how-decibels-are-calculated","tag-how-decibels-are-measured","tag-how-decibels-is-loud","tag-how-decibels-scale","tag-how-decibels-work","tag-how-does-decibels-work","tag-how-loud-should-decibels-be","tag-how-many-decibels-is-a-gunshot","tag-how-many-decibels-is-too-loud","tag-in-decibels-which-is-loudest","tag-is-decibels-a-linear-scale","tag-is-decibels-a-logarithmic-scale","tag-is-decibels-dangerous","tag-is-decibels-sound","tag-is-decibels-sound-level","tag-what-decibels-are-harmful","tag-what-decibels-can-dogs-hear","tag-what-decibels-can-humans-hear","tag-what-decibels-cause-hearing-damage","tag-what-decibels-cause-hearing-loss","tag-what-decibels-damage-hearing","tag-what-decibels-is-a-quiet-dishwasher","tag-what-decibels-is-normal-hearing","tag-what-does-decibels-mean-in-dishwashers","tag-what-does-decibels-mean-when-buying-a-dishwasher","tag-what-does-decibels-measure","tag-when-are-decibels-dangerous","tag-when-do-decibels-become-dangerous","tag-when-do-decibels-change","tag-when-is-85-decibels","tag-when-were-decibels-invented","tag-where-are-decibels-used","tag-where-is-85-decibels-on-an-iphone","tag-where-is-9-decibels","tag-where-is-9-decibels-room","tag-which-decibels-cause-hearing-loss","tag-which-is-louder-decibels","tag-who-concert-decibels","tag-who-invented-decibels","tag-who-sound-decibels","tag-why-are-decibels-logarithmic","tag-why-are-decibels-measured-in-negative-numbers","tag-why-are-decibels-negative-numbers","tag-why-are-decibels-used-to-measure-sound","tag-why-decibels-are-negative","tag-why-decibels-is-used","tag-why-do-decibels-go-negative","tag-why-use-decibels","tag-will-2000-decibels-kill-you"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Understanding decibels (part 1) - mp4gain.com<\/title>\n<meta name=\"description\" content=\"What does the decibel or db measure?Decibels are widely used in audio and are often misinterpreted. 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