{"id":3786,"date":"2021-06-09T16:48:38","date_gmt":"2021-06-09T16:48:38","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=3786"},"modified":"2021-06-09T16:48:38","modified_gmt":"2021-06-09T16:48:38","slug":"audio-coding-secrets-revealed-part-2-2","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/audio-coding-secrets-revealed-part-2-2\/","title":{"rendered":"Audio Coding: Secrets Revealed Part 2"},"content":{"rendered":"<p><strong>Audio Coding: Secrets Revealed Part 2<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/image.slidesharecdn.com\/audioencodingprinciples-130922131906-phpapp01\/95\/audio-encoding-principles-7-638.jpg?cb=1379856037\" alt=\"Bit Depth\" width=\"638\" height=\"479\" \/><\/p>\n<p>Bit depth<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/images.slideplayer.com\/19\/5783600\/slides\/slide_3.jpg\" alt=\"audio encoding\" width=\"960\" height=\"720\" \/><\/p>\n<p>Along with the sample rate, there is the bit depth or depth of the sound. Bit depth is the number of bits of digital information to encode each sample. Simply put, the bit depth determines the &#8220;accuracy&#8221; of the input signal measurement. The larger the digit capacity, the smaller the error will be for each individual conversion from the magnitude of an electrical signal to a number and vice versa. With the smallest possible bit depth, there are only two options for measuring sound accuracy: 0 for full silence and 1 for full sound. If the bit width is 8 (16), then by measuring the input signal, 2 8 = 256 (2 16 = 65,536) different values \u200b\u200bcan be obtained.<\/p>\n<p>Bit depth is fixed in the PCM codec, but for codecs that assume compression (eg MP3 and AAC), this parameter is calculated during encoding and may vary from sample to sample.<\/p>\n<p>Bitrate<br \/>\nBit rate is an indicator of the amount of information that one second of sound encodes. The higher it is, the less distortion and the closer the encoded composition is to the original. For linear PCM, the bit rate is very easy to calculate.<\/p>\n<p>bitrate = sample rate \u00d7 bit depth \u00d7 channels<\/p>\n<p>For systems like the Epiphan Pearl Mini that encode 16-bit (16-bit) linear PCM, this calculation can be used to determine how much additional bandwidth the PCM audio might require. For example, for stereo (two channels), the signal is digitized at 44.1 kHz at 16 bits and the bit rate is calculated as follows:<\/p>\n<p>44.1 kHz \u00d7 16 bit \u00d7 2 = 1411.2 kbps<\/p>\n<p>Meanwhile, audio compression algorithms like AAC and MP3 have fewer bits to transmit the signal (that&#8217;s their purpose), so they use low bit rates. Typically, the values \u200b\u200bare in the range of 96 kbps to 320 kbps. For these codecs, the higher the bit rate you choose, the more audio bits you get per sample and the better the sound quality.<\/p>\n<p>Sample rate, bit depth and bit rates in real life.<br \/>\nAudio CDs, one of the most popular early inventions for the general public for storing digital audio, used 44.1 kHz (20 Hz &#8211; 20 kHz, human ear range) and 16 bits. These values \u200b\u200bwere chosen to be able to save as much audio as possible to disk with good sound quality.<\/p>\n<p>When video was added to audio and DVD and then Blu-ray discs came along, a new standard was created. DVD and Blu-Ray recordings typically use 48 kHz (stereo) or 96 kHz (5.1 surround) linear PCM format and 24-bit depth. These settings have been selected as ideal for keeping audio in sync with video while obtaining the best possible quality using the additional available disk space.<\/p>\n<p>Our recommendations<br \/>\nCDs, DVDs, and Blu-Ray discs all have one goal: to provide the consumer with a high-quality playback engine. The goal of all developments was to provide high-quality audio and video without worrying about file size (if only it could fit on disk). Such quality could be provided by linear PCM.<\/p>\n<p>In contrast, mobile media and streaming media have a completely different goal: to use the lowest bit rate, as low as possible, while still being sufficient to maintain acceptable quality for the listener. Compression algorithms are best suited for this task. You can follow the same principles for your records.<\/p>\n<p>When recording audio from a video &#8230;<br \/>\nIn case the record is used for the next on-ra-ki-bot, choose the 48 kHz PCM codec and the maximum bit depth (16 or 24) to provide the best audio quality. We recommend these parameters for Epiphan Pearl Mini.<\/p>\n<p>When streaming audio from video &#8230;<br \/>\nWith streaming or recording for later translation, good sound can be obtained with less bandwidth, using MP3 or AAC codecs with a frequency of 44.1 kHz and a bit rate of 128 kbit \/ s or higher. These parameters ensure that the sound is good enough without affecting the quality of the transmission.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Audio Coding: Secrets Revealed Part 2 Bit depth Along with the sample rate, there is the bit depth or depth of the sound. Bit depth is the number of bits of digital information to encode each sample. Simply put, the bit depth determines the &#8220;accuracy&#8221; of the input signal measurement. The larger the digit capacity, &hellip; <a href=\"https:\/\/mp4gain.com\/mp4gain\/audio-coding-secrets-revealed-part-2-2\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Audio Coding: Secrets Revealed Part 2&#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":[45907,45908,60674,62525,45813,45906,45798,45796,62523,62300,45791,45805,45804,45880,45803,45790,45802,62301,45808,45811,45812,60657,45814,45809,45810,57338,45816,60659,45817,60660,45822,62524,45823,45824,45829,60663,60662,45831,45830,45825,45833,45787,45835,45834,60664,45840,62303,62526,45846,57341,45855,45793,45856,62304,45859,45872,57343,60670,62044,57344,45876,45881,62045,45885,57345,45794,62528,45788,45850,57346,45890,45789,45893,45819,47735,45897,62529,57347,45860,45862,45848,45888,60671,45858,45894,45899,62305,23008,29703,45821,45892,45799,45800,60667,62527,47733,45887,45900,45870,62046,45827,45828,45867,45838,45836,45842,45843,45841,45845,45901,57339,45854,45861,45864,45865,45869,45868,45875,45878,45883,45806,45896,45895,45903,45905],"class_list":["post-3786","post","type-post","status-publish","format-standard","hentry","category-audio-video","tag-24-bit-audio-encoding","tag-32-bit-audio-encoding","tag-7-1-audio-encoding","tag-android-audio-encoding-example","tag-audio-cd-encoding","tag-audio-encoding-128kbps","tag-audio-encoding-aac","tag-audio-encoding-ac3-not-supported","tag-audio-encoding-algorithm","tag-audio-encoding-alternative","tag-audio-encoding-and-decoding","tag-audio-encoding-base64","tag-audio-encoding-benchmark","tag-audio-encoding-bit-rate","tag-audio-encoding-bit-rate-quality","tag-audio-encoding-bitrate","tag-audio-encoding-bitrate-android","tag-audio-encoding-book","tag-audio-encoding-channels","tag-audio-encoding-check","tag-audio-encoding-code","tag-audio-encoding-codecs","tag-audio-encoding-compression","tag-audio-encoding-conversion","tag-audio-encoding-converter","tag-audio-encoding-data","tag-audio-encoding-data-size","tag-audio-encoding-difference","tag-audio-encoding-dts","tag-audio-encoding-dts-ac3","tag-audio-encoding-eac3-not-supported","tag-audio-encoding-eac3-not-supported-android","tag-audio-encoding-error","tag-audio-encoding-examples","tag-audio-encoding-ffmpeg","tag-audio-encoding-file-format","tag-audio-encoding-files","tag-audio-encoding-flac","tag-audio-encoding-format-ac3-not-supported","tag-audio-encoding-format-eac3-not-supported","tag-audio-encoding-format-meaning","tag-audio-encoding-formats","tag-audio-encoding-g-726","tag-audio-encoding-g711ulaw","tag-audio-encoding-hardware","tag-audio-encoding-hikvision","tag-audio-encoding-in-ffmpeg","tag-audio-encoding-in-matlab","tag-audio-encoding-ios","tag-audio-encoding-iphone","tag-audio-encoding-library","tag-audio-encoding-linear16","tag-audio-encoding-lossless","tag-audio-encoding-methods","tag-audio-encoding-mp2l2","tag-audio-encoding-pcm","tag-audio-encoding-pdf","tag-audio-encoding-podcast","tag-audio-encoding-podigee","tag-audio-encoding-python","tag-audio-encoding-quality","tag-audio-encoding-sample-rate","tag-audio-encoding-sampling","tag-audio-encoding-sampling-frequency","tag-audio-encoding-settings","tag-audio-encoding-software","tag-audio-encoding-standard","tag-audio-encoding-techniques","tag-audio-encoding-techniques-in-multimedia","tag-audio-encoding-time","tag-audio-encoding-transcoding","tag-audio-encoding-types","tag-audio-encoding-using-ffmpeg","tag-audio-encoding-vs-decoding","tag-audio-encoding-vs-format","tag-audio-encoding-wiki","tag-audio-encoding-with-ffmpeg","tag-audio-encoding-youtube","tag-audio-format-encoding-mp4","tag-audio-format-mp3-encoding","tag-audio-input-encoding","tag-audio-steganography-encoding","tag-audio-text-encoding","tag-audio-ulaw-encoding","tag-audio-video-encoding","tag-audio-watermarking-encoding","tag-audio-webm-encoding","tag-best-audio-encoding-format","tag-digital-audio-encoding","tag-dolby-audio-encoding-utility","tag-dvd-flick-audio-encoding-takes-forever","tag-encoding-audio-and-video","tag-encoding-audio-and-video-bitesize","tag-encoding-audio-in-computer","tag-encoding-audio-on","tag-encoding-audio-over-ip","tag-encoding-audio-signal","tag-encoding-audio-with","tag-encoding-of-audio-signals","tag-encoding-using-audio","tag-esp32-audio-encoding","tag-ffmpeg-audio-encoding-example","tag-ffmpeg-audio-encoding-options","tag-gpu-audio-encoding","tag-gsm-audio-encoding","tag-handbrake-audio-encoding","tag-hdmi-audio-encoding","tag-hikvision-audio-encoding-type","tag-how-audio-encoding-works","tag-how-does-audio-encoding-work","tag-ivms-4200-audio-encoding-error","tag-java-audio-encoding","tag-lav-audio-matrix-encoding","tag-netflix-audio-encoding","tag-normal-audio-encoding","tag-obs-audio-encoding","tag-opus-audio-encoding","tag-perceptual-audio-encoding","tag-qt-audio-encoding","tag-record-audio-encoding","tag-set-audio-encoding-bitrate","tag-video-audio-encoding-settings","tag-voip-audio-encoding","tag-webrtc-audio-encoding","tag-zoom-audio-encoding"],"yoast_head":"<!-- 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Bit depth is the number of bits of digital information to encode each sample. Simply put, the bit depth determines the &#8220;accuracy&#8221; of the input signal measurement. The larger the digit capacity, &hellip; Continue reading &quot;Audio Coding: Secrets Revealed Part 2&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mp4gain.com\/mp4gain\/audio-coding-secrets-revealed-part-2-2\/\" \/>\n<meta property=\"og:site_name\" content=\"mp4gain.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/mp4gain\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-09T16:48:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/image.slidesharecdn.com\/audioencodingprinciples-130922131906-phpapp01\/95\/audio-encoding-principles-7-638.jpg?cb=1379856037\" \/>\n<meta name=\"author\" content=\"R. 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The larger the digit capacity, &hellip; Continue reading \"Audio Coding: Secrets Revealed Part 2\"","og_url":"https:\/\/mp4gain.com\/mp4gain\/audio-coding-secrets-revealed-part-2-2\/","og_site_name":"mp4gain.com","article_publisher":"https:\/\/www.facebook.com\/mp4gain","article_published_time":"2021-06-09T16:48:38+00:00","og_image":[{"url":"https:\/\/image.slidesharecdn.com\/audioencodingprinciples-130922131906-phpapp01\/95\/audio-encoding-principles-7-638.jpg?cb=1379856037","type":"","width":"","height":""}],"author":"R. Arias","twitter_card":"summary_large_image","twitter_creator":"@mp4gain","twitter_site":"@mp4gain","twitter_misc":{"Written by":"R. Arias","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/mp4gain.com\/mp4gain\/audio-coding-secrets-revealed-part-2-2\/#article","isPartOf":{"@id":"https:\/\/mp4gain.com\/mp4gain\/audio-coding-secrets-revealed-part-2-2\/"},"author":{"name":"R. 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