{"id":1815,"date":"2020-08-31T20:56:27","date_gmt":"2020-08-31T20:56:27","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=1815"},"modified":"2020-08-31T20:56:27","modified_gmt":"2020-08-31T20:56:27","slug":"but-what-role-does-the-bit-rate-play","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/but-what-role-does-the-bit-rate-play\/","title":{"rendered":"But what role does the bit rate play?"},"content":{"rendered":"<p>This term is known primarily for describing the quality of lossy compressed audio (eg MP3). Unfortunately, this makes it even more difficult than with channel-separated compression, the bit rate is split between the two channels: stereo MP3 (not to be confused with dual channel) with a 320 kBit \/ sec bit rate. uses only 160 kBit \/ sec per channel.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/bytesofgigabytes.com\/IMAGES\/Embedded\/BitrateVsBaudrate\/Bitrateequalbaudrate.png\" alt=\"Bit Rate\" width=\"1369\" height=\"999\" \/><\/p>\n<p>Or different bit rates per channel: set stereo (mono signal calculated with additional stereo information), on the other hand, it works with volume differences between the two channels and therefore can use the bit rate much more efficiently .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/tecnologia-informatica.com\/wp-content\/uploads\/2018\/11\/que-es-el-bitrate-1.jpeg\" alt=\"Bitrate\" width=\"550\" height=\"411\" \/><\/p>\n<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\/but-what-role-does-the-bit-rate-play\/#DAC_bit_rate\" >DAC, bit rate<\/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\/but-what-role-does-the-bit-rate-play\/#DAC_bit_rate-2\" >DAC bit rate<\/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\/but-what-role-does-the-bit-rate-play\/#FLAC\" >FLAC<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"DAC_bit_rate\"><\/span>DAC, bit rate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>What exactly is the obviously so essential bit rate? For a CD based on the Red Book standard, the bit rate is calculated as follows: 2 channels * 44,100 Hz sample rate * 16 bit depth per sample results in 1,411,200 bits \/ sec., That is, 1.4112 Mbit \/ sec. Bit rate. Obviously, this is considerably more than what compressed formats (should) provide. You can see how the compression processes work: last but not least, they more or less cleverly reduce the bit depth per sample at a given sample rate of 44.1 kHz, for example. The amount of data decreases, and that is exactly the goal of every data compression: halving the bit rate means exactly halving the amount of data.<\/p>\n<p>As an example, I have compared some common file formats for digital audio:<\/p>\n<p>Format<\/p>\n<p>Codec (s)<\/p>\n<p>Multichannel<\/p>\n<p>Sampling rate<\/p>\n<p>Bit depth or resulting bit depth from bit rate<\/p>\n<p>Compression<br \/>\n\/<br \/>\nsubject to acoustic losses<\/p>\n<p>Wav<\/p>\n<p>PCM et al.<\/p>\n<p>yes<\/p>\n<p>any<\/p>\n<p>any<\/p>\n<p>Optionally, depending on the codec, also lossless<\/p>\n<p>AIFF<\/p>\n<p>PCM et al.<\/p>\n<p>Not<\/p>\n<p>any<\/p>\n<p>any<\/p>\n<p>Not<\/p>\n<p>FLAC<\/p>\n<p>FLAC (Free Lossless Audio Codec)<\/p>\n<p>yes<\/p>\n<p>0.001 kHz-655.350 kHz<\/p>\n<p>4, 8, 16, 20, 24, 32<\/p>\n<p>without losses<\/p>\n<p>Apple loses<br \/>\nless<br \/>\nMP4<\/p>\n<p>ALAC (Apple Lossless Audio Codec)<\/p>\n<p>yes<\/p>\n<p>0.001 kHz-384,000 kHz<\/p>\n<p>16, 20, 24, 32<\/p>\n<p>without losses<\/p>\n<p>MP3<\/p>\n<p>MPEG I Layer 3 in various incarnations<br \/>\nas B. LAME<\/p>\n<p>Not<\/p>\n<p>8-48 kHz<\/p>\n<p>8-320 kBit \/ sec. CBR \/ VBR or 640 CBR for free MP3 format<\/p>\n<p>with mandatory loss<\/p>\n<p>Most readers will know that lossy compression is often based on psychoacoustic models or natural limitations of human hearing: what humans cannot (should) hear is not stored in the musical signal and is irretrievably lost, apparently not. you need it. The most popular example of this is the old MP3 format already mentioned. For some audiophiles, lossy compression is by definition useless for serious music listening, regardless of whether or not they would notice the loss of compression. For others, the sound is 320 kBit \/ sec. MP3 encoded for pop music are identical to CDs, they are satisfied.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DAC_bit_rate-2\"><\/span>DAC bit rate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Lossless compression, on the other hand, has become increasingly popular since Internet bandwidths and storage capacities have steadily increased. An example is the FLAC format, which fortunately is also &#8220;open source&#8221;, which means that it can be used freely and even changed in terms of the program. Meanwhile, most of the time it is directly compatible with proprietary audio hardware, so FLAC files can be played without the help of a computer, and in some cases even created (ripped CDs). As the table above shows, FLAC supports very high sample rates and bit depths, as well as multi-channel sound.<\/p>\n<p>With FLAC, the audio signal is encoded based on computable fixed-point algorithms that conserve computational power, in which blocks are formed step by step and stereo separation is converted to mid-side separation and performed the remodeling of the signal with differential storage. No information is lost, it is stored more efficiently than, for example, on a CD; Depending on the complexity of the audio signal, compression rates of up to 30% can be achieved.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FLAC\"><\/span>FLAC<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>It should be clear once again that FLAC or MP3 are file formats and therefore cannot be directly compared to the PCM of the Red Book encoding of a CD or DSD (see next section). Let&#8217;s leave it at that on the subject of data compression.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This term is known primarily for describing the quality of lossy compressed audio (eg MP3). Unfortunately, this makes it even more difficult than with channel-separated compression, the bit rate is split between the two channels: stereo MP3 (not to be confused with dual channel) with a 320 kBit \/ sec bit rate. uses only 160 &hellip; <a href=\"https:\/\/mp4gain.com\/mp4gain\/but-what-role-does-the-bit-rate-play\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;But what role does the bit rate play?&#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":[26809,26776,40407,26790,22853,26836,26850,26849,26848,37680,37681,26780,26781,40398,26782,40399,29689,29691,26788,26789,37683,26796,26798,26799,29834,29692,26797,37684,40402,26804,26806,40400,40401,26805,40403,26815,26812,26813,41304,29697,26819,41305,29836,29698,26824,26827,26820,40404,26822,26821,29694,26828,26838,26840,29699,26837,26839,26841,26842,26775,26774,14979,14978,26777,26778,37682,26793,26794,29837,38289,38292,26834,26843,26832,26845,41306,29700,29701,26831,26829,26830,26856,26857,26863,26867,26864,41141,40408,37688,26866,26868,26870,26871,26878,26874,26792,26875,26876,26880,26879,26881],"class_list":["post-1815","post","type-post","status-publish","format-standard","hentry","category-audio-video","tag-amazon-music-hd-bitrate","tag-are-all-nitrates-the-same","tag-best-bitrate-when-streaming","tag-bitrate-do","tag-bitrate-to-stream","tag-bitrate-was-ist-das","tag-bitrate-when-burning-cds","tag-bitrate-when-recording","tag-bitrate-when-streaming","tag-bitrates-are-lower","tag-can-bitrate-affect-video-quality","tag-can-bitrate-be-too-high","tag-can-bitrate-calculator","tag-can-bitrate-calculator-microchip","tag-can-bitrate-linux","tag-can-bitrate-set","tag-can-bitrate-vs-baud-rate","tag-can-bus-bitrates","tag-do-bitrate-affect-quality","tag-do-bitrate-affect-video-quality","tag-does-bitrate-affect-cpu","tag-does-bitrate-affect-fps","tag-does-bitrate-affect-quality","tag-does-bitrate-affect-recording","tag-does-bitrate-affect-stream-delay","tag-does-bitrate-affect-video-quality","tag-does-bitrate-matter","tag-does-bitrate-matter-for-recording","tag-hd-bit-rate-mp3","tag-hd-bitrate","tag-hd-bitrate-calculator","tag-hd-bitrate-obs","tag-hd-bitrate-twitch","tag-hd-bitrate-youtube","tag-how-bit-rate-is-proportional-to-bandwidth","tag-how-bitrate-affect-audio-quality","tag-how-bitrate-affect-video-quality","tag-how-bitrate-works","tag-how-many-bitrate-for-1080p","tag-how-much-bitrate-for-1080p","tag-how-much-bitrate-for-1080p-60fps","tag-how-much-bitrate-should-i-use","tag-is-bitrate-audio-quality","tag-is-bitrate-better-than-resolution","tag-is-bitrate-good","tag-is-bitrate-good-for-streaming","tag-is-bitrate-important","tag-is-bitrate-lower-better","tag-is-bitrate-the-same-as-bandwidth","tag-is-bitrate-the-same-as-resolution","tag-netflix-hd-bitrate","tag-should-bitrate-be-high-or-low","tag-was-bedeutet-bitrate","tag-was-bedeutet-bitrate-bei-videos","tag-was-heist-bitrate","tag-was-ist-bitrate","tag-was-ist-bitrate-bei-videos","tag-was-ist-bitrate-video","tag-was-sind-bitrate","tag-what-are-bitrate-settings","tag-what-are-bitrates-in-video","tag-what-bitrate-are-amazon-mp3-downloads","tag-what-bitrate-are-amazon-mp3s","tag-what-bitrate-are-cds","tag-what-bitrate-are-youtube-videos","tag-what-bitrate-do-i-need-for-1080p","tag-what-bitrate-do-streamers-use","tag-what-bitrate-do-you-need-for-1080p","tag-what-bitrate-for-720p-60fps","tag-what-bitrate-is-1080p","tag-what-bitrate-is-720p","tag-what-bitrate-should-i-record-at","tag-what-bitrate-should-i-record-at-obs","tag-what-bitrate-should-i-stream-at","tag-what-bitrate-should-i-stream-at-twitch","tag-what-bitrate-should-i-use-for-twitch","tag-what-bitrate-to-stream-at","tag-what-is-bitartrate-used-for","tag-what-should-bitrate","tag-what-should-bitrate-be-for-1080p","tag-what-should-bitrate-be-in-obs","tag-where-is-bitrate-obs","tag-where-to-find-bitrate","tag-which-bitrate-for-streaming","tag-which-bitrate-is-best-for-1080p","tag-which-bitrate-is-best-for-audio","tag-which-bitrate-is-best-for-kinemaster","tag-which-bitrate-is-best-for-mp3","tag-which-bitrate-is-best-for-youtube-video","tag-which-bitrate-should-i-use","tag-which-video-bitrate-should-i-use","tag-who-invented-adaptive-bitrate-streaming","tag-who-invented-the-bitrate","tag-why-adaptive-bitrate","tag-why-bitrate-is-important","tag-why-do-bitrates","tag-why-does-bitrate-matter","tag-why-is-bitrate-spiking","tag-why-is-my-bitrate-so-low","tag-why-is-my-bitrate-unstable","tag-will-netflix-increase-bitrate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>But what role does the bit rate play? 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Unfortunately, this makes it even more difficult than with channel-separated compression, the bit rate is split between the two channels: stereo MP3 (not to be confused with dual channel) with a 320 kBit \/ sec bit rate. uses only 160 &hellip; Continue reading \"But what role does the bit rate play?\"","og_url":"https:\/\/mp4gain.com\/mp4gain\/but-what-role-does-the-bit-rate-play\/","og_site_name":"mp4gain.com","article_publisher":"https:\/\/www.facebook.com\/mp4gain","article_published_time":"2020-08-31T20:56:27+00:00","og_image":[{"url":"https:\/\/bytesofgigabytes.com\/IMAGES\/Embedded\/BitrateVsBaudrate\/Bitrateequalbaudrate.png","type":"","width":"","height":""}],"author":"R. Arias","twitter_card":"summary_large_image","twitter_creator":"@mp4gain","twitter_site":"@mp4gain","twitter_misc":{"Written by":"R. 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