{"id":10578,"date":"2019-08-12T14:49:16","date_gmt":"2019-08-12T14:49:16","guid":{"rendered":"http:\/\/www.orbit-rri.org\/ears\/?post_type=encyclopedia&#038;p=10578"},"modified":"2020-11-09T10:45:18","modified_gmt":"2020-11-09T10:45:18","slug":"filter","status":"publish","type":"encyclopedia","link":"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/filter","title":{"rendered":"Filter"},"content":{"rendered":"<p>A filter changes the <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">frequency<\/a> makeup of a sound by making parts of it weaker. Filters allow you to focus on parts of a sound that are of interest to you, or to take away parts that you don&rsquo;t like, such as <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/noise\" target=\"_self\" title=\"Objects that vibrate in a randomised fashion produce sounds that we describe as noisy. This is because the sounds produced contain a random assortment of frequencies. Advanced A term that describes sounds that have a diffuse spread of spectral energy. It is often contrasted with pitched sounds. Noisy sounds may be hard to define in&hellip;\" class=\"encyclopedia\">noise<\/a> or &lsquo;hiss&rsquo;<\/p>\n<p>(Some filters, also known as Equalisers, can make parts of the sound stronger).<\/p>\n<h2>Controls<\/h2>\n<p>Filters have two main controls:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">Frequency<\/a><\/strong>: the <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">frequency<\/a> at which the filter operates.<\/li>\n<li><strong>Quality<\/strong>: the width and shape of the filter (narrow or wide \/ gentle or steep).<\/li>\n<\/ul>\n<h2>Filter Types<\/h2>\n<p>There are several types of filters:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong><a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/low-pass-filter\" target=\"_self\" title=\"A low-pass filter lets the bass tones through (the low frequencies) and removes the treble (high frequencies). The separation between low and high frequencies is called the cut-off frequency. If the cut-off frequency is 500 Hertz (Hz), all of the frequencies over 500 Hz will disappear.\" class=\"encyclopedia\">Low-pass filter<\/a><\/strong>&nbsp;&ndash; Allows all frequencies lower than its cut off point to pass (for example, if the cut-off <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">frequency<\/a> is set at 500 Hertz (Hz), all of the frequencies over 500 Hz will disappear). Does not allow any higher frequencies to pass. Best used to remove unwanted high sounds, or to highlight only the low <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">frequency<\/a> portions of a sound.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.orbit-rri.org\/ears-demo\/\/wp-content\/uploads\/2013\/06\/LowPassFilterBadge.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-435 size-full\" title=\"Low-pass Filter\" src=\"https:\/\/ears2.eu\/wp-content\/uploads\/2013\/06\/LowPassFilterBadge.png\" alt=\"LowPassFilterBadge\" width=\"50\" height=\"50\"><\/a><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong><a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/high-pass-filter\" target=\"_self\" title=\"A high-pass filter lets the high frequencies through and removes the low. A High Pass filter&nbsp;allows all frequencies higher than its cut off point to pass. Does not allow any lower frequencies to pass. Best used to remove unwanted bass sounds, or to highlight only the high frequency portions of a sound.\" class=\"encyclopedia\">High-pass filter<\/a><\/strong>&nbsp;&ndash; Allows all frequencies higher than its cut off point to pass. Does not allow any lower frequencies to pass. Best used to remove unwanted bass sounds, or to highlight only the high <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">frequency<\/a> portions of a sound.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.orbit-rri.org\/ears-demo\/\/wp-content\/uploads\/2013\/06\/HighPassFilterBadge.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-433 size-full\" title=\"High-pass Filter\" src=\"https:\/\/ears2.eu\/wp-content\/uploads\/2013\/06\/HighPassFilterBadge.png\" alt=\"HighPassFilterBadge\" width=\"50\" height=\"50\"><\/a><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong><a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/band-pass-filter\" target=\"_self\" title=\"A band-pass filter lets through only a (small) frequency area surrounding a centre frequency. The Band Pass Filter will&nbsp;only allow one band of sound to pass through. Best used to highlight frequencies of sound in a specific area. The Quality of the filter will affect its width.\" class=\"encyclopedia\">Band-pass Filter<\/a>&#8232;<\/strong>&nbsp;&ndash; Allow one band of sound to pass through. Best used to highlight frequencies of sound in a specific area. The Quality of the filter will affect its width.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.orbit-rri.org\/ears-demo\/\/wp-content\/uploads\/2013\/06\/BandPassFilterBadge.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-421 size-full\" title=\"Band-pass Filter\" src=\"https:\/\/ears2.eu\/wp-content\/uploads\/2013\/06\/BandPassFilterBadge.png\" alt=\"BandPassFilterBadge\" width=\"50\" height=\"50\"><\/a><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong><a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/band-reject-filter\" target=\"_self\" title=\"A band reject filter removes a (small) frequency area surrounding a centre frequency. The Band Reject Filter will&nbsp;not let a certain band of sound to pass through. Best used to remove sounds within a specific frequency area.\" class=\"encyclopedia\">Band-reject Filter<\/a><\/strong>&#8232; &ndash; Will&nbsp;not let a certain band of sound to pass through. Best used to remove sounds at a specific <a href=\"https:\/\/ears2.eu\/pt-pt\/encyclopediaptpt\/frequency\" target=\"_self\" title=\"A technical term that describes&nbsp;Pitch. The higher the frequency of a sound the higher it sounds in pitch. Frequency is measured in Hertz (Hz). The number of wave cycles per second.\" class=\"encyclopedia\">frequency<\/a>. The Quality of the filter will affect its width.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.orbit-rri.org\/ears-demo\/\/wp-content\/uploads\/2013\/06\/BandRejectFilterBadge.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-422 size-full\" title=\"Band-reject Filter\" src=\"https:\/\/ears2.eu\/wp-content\/uploads\/2013\/06\/BandRejectFilterBadge.png\" alt=\"BandRejectFilterBadge\" width=\"50\" height=\"50\"><\/a><\/p>\n<div class=\"standout fact\">\n<h2>Fact<\/h2>\n<header>The bass and treble controls on your stereo are filters.<\/header>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A filter changes the frequency makeup of a sound by making parts of it weaker. Filters allow you to focus on parts of a sound that are of interest to you, or to take away parts that you don\u2019t like, such as noise or \u2018hiss\u2019 (Some filters, also known as Equalisers, can make parts of [&hellip;]<\/p>\n","protected":false},"author":8389,"template":"","encyclopedia-tag":[],"class_list":["post-10578","encyclopedia","type-encyclopedia","status-publish","hentry","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Filter - EARS 2<\/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:\/\/ears2.eu\/encyclopedia\/filter\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Filter - EARS 2\" \/>\n<meta property=\"og:description\" content=\"A filter changes the frequency makeup of a sound by making parts of it weaker. Filters allow you to focus on parts of a sound that are of interest to you, or to take away parts that you don\u2019t like, such as noise or \u2018hiss\u2019 (Some filters, also known as Equalisers, can make parts of [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ears2.eu\/encyclopedia\/filter\" \/>\n<meta property=\"og:site_name\" content=\"EARS 2\" \/>\n<meta property=\"article:modified_time\" content=\"2020-11-09T10:45:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ears2.eu\/wp-content\/uploads\/2013\/06\/LowPassFilterBadge.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter\",\"url\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter\",\"name\":\"Filter - EARS 2\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ears2.eu\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ears2.eu\\\/wp-content\\\/uploads\\\/2013\\\/06\\\/LowPassFilterBadge.png\",\"datePublished\":\"2019-08-12T14:49:16+00:00\",\"dateModified\":\"2020-11-09T10:45:18+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter#primaryimage\",\"url\":\"https:\\\/\\\/ears2.eu\\\/wp-content\\\/uploads\\\/2013\\\/06\\\/LowPassFilterBadge.png\",\"contentUrl\":\"https:\\\/\\\/ears2.eu\\\/wp-content\\\/uploads\\\/2013\\\/06\\\/LowPassFilterBadge.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\\\/filter#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ears2.eu\\\/pt-pt\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Encyclopedia\",\"item\":\"https:\\\/\\\/ears2.eu\\\/encyclopedia\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Filter\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ears2.eu\\\/#website\",\"url\":\"https:\\\/\\\/ears2.eu\\\/\",\"name\":\"EARS 2\",\"description\":\"Make Music with Sounds\",\"publisher\":{\"@id\":\"https:\\\/\\\/ears2.eu\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ears2.eu\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/ears2.eu\\\/#organization\",\"name\":\"EARS 2\",\"url\":\"https:\\\/\\\/ears2.eu\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\\\/\\\/ears2.eu\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/ears2.eu\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/Logo.png\",\"contentUrl\":\"https:\\\/\\\/ears2.eu\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/Logo.png\",\"width\":1346,\"height\":573,\"caption\":\"EARS 2\"},\"image\":{\"@id\":\"https:\\\/\\\/ears2.eu\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Filter - EARS 2","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ears2.eu\/encyclopedia\/filter","og_locale":"pt_PT","og_type":"article","og_title":"Filter - EARS 2","og_description":"A filter changes the frequency makeup of a sound by making parts of it weaker. 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