{"id":5165,"date":"2022-05-25T10:51:35","date_gmt":"2022-05-25T10:51:35","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=5165"},"modified":"2022-05-25T10:51:35","modified_gmt":"2022-05-25T10:51:35","slug":"principle-of-mp3-and-file-format-analysis-part4","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/principle-of-mp3-and-file-format-analysis-part4\/","title":{"rendered":"Principle of mp3 and file format analysis. Part4"},"content":{"rendered":"

Principle of mp3 and file format analysis. Part4<\/h2>\n

\"MP3\"<\/p>\n

The three bytes starting at 1397H are 54 41 47, which store the “TAG” character, indicating that this file has ID3 V1.0 information.<\/p>\n

\"MP3\"<\/p>\n

The 30 bytes starting at 139AH store the name of the song, the first 4 bytes that are not 00 are 54 45 53 54, which means “TEST”;
\nthe 4 bytes starting at 13F4H are 04 19 14 03 and the year of storage is “04\/25\/2003” \u201d;
\nthe last byte is 4E, which represents the music category, and the code name is 78, that is, \u201cRock&Roll\u201d; the
\nother bytes are all 00, and no information is stored.<\/p>\n

4 Conclusions
\nAs an important multimedia data type, people are always looking for more efficient compression methods and new sound file formats. In the MP3 file, the MDCT transform is used, which is a quasi-optimal transform with a simple structure and easy programming, which avoids the problem that the optimal transform (KL) is difficult to solve for the eigenvalues \u200b\u200band eigenvectors of the covariance. matrix.<\/p>\n

Through the analysis of the MP3 file format, it is not difficult to find its shortcomings. Each frame of an MP3 file has the same 4-byte frame header, which requires some space overhead for an MP3 file with a large number of frames. ID3 stores the music description information. The proprietary, copyright, and other information in the frame header is also description information. The music description information is a bit messy.<\/p>\n

In any case, the development of MP3 is unstoppable. MP3 has become a recognized sound data format. MP3 is becoming a hot spot in the field of multimedia information processing along with JPEG images and PDF documents.<\/p>\n","protected":false},"excerpt":{"rendered":"

Principle of mp3 and file format analysis. Part4 The three bytes starting at 1397H are 54 41 47, which store the “TAG” character, indicating that this file has ID3 V1.0 information. The 30 bytes starting at 139AH store the name of the song, the first 4 bytes that are not 00 are 54 45 53 … Continue reading “Principle of mp3 and file format analysis. Part4”<\/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":[257],"tags":[72489,72538,72502,72495,72494,72497,72496,72499,72498,72501,48323,72537,20938,72574,27553,72528,72527,72535,6892,45787,6893,72564,6905,32455,22186,72493,72525,29128,72563,34980,23780,72582,72580,72579,72578,72581,72583,72594,6567,29115,6858,29113,6854,6855,33601,72492,29120,72504,72503,6866,6861,33605,29121,72516,6847,27546,33615,72514,29125,72515,6880,72526,6883,6878,6888,6852,72553,22467,72573,32106,72551,28904,72549,6897,72552,28902,72550,6913,6910,6912,6921,14738,29109,29110,72506,72571,19352,72505,72500,72510,22978,29906,50222,6867,72507,72511,72508,72512,72513,72509,72522,72521,72520,72519,72517,72524,72523,47496,72518,28913,72534,72532,48326,72529,6894,16419,27524,6903,72531,72530,72536,72533,72539,72570,72547,72543,72546,72542,72540,72548,72545,72544,72541,72561,72491,72554,72560,72562,72555,72557,72558,72556,72559,40282,72565,6907,72566,72569,72567,72568,6908,49603,72575,72577,46603,32560,72576,48373,51078,29138,7089,72572,72589,72585,72592,72586,72593,72584,72591,72588,72590,72587,6929,6931,6928,9204,45923,48328,72490,6917,27538,23653,72784,72595,6830],"class_list":["post-5165","post","type-post","status-publish","format-standard","hentry","category-audio-normalizer","tag-all-audio-formats","tag-all-audio-formats-explained","tag-all-types-of-audio-formats","tag-analog-audio-formats","tag-android-supported-audio-formats","tag-apple-audio-formats","tag-apple-tv-4k-audio-formats","tag-apple-tv-supported-audio-formats","tag-arc-audio-formats","tag-arc-supported-audio-formats","tag-audacity-supported-audio-formats","tag-audio-cd-formats-explained","tag-audio-compression-formats","tag-audio-container-format-header","tag-audio-data-format","tag-audio-description-formats","tag-audio-download-formats","tag-audio-editing-formats","tag-audio-element-formats","tag-audio-encoding-formats","tag-audio-file-formats-explained","tag-audio-file-formats-general","tag-audio-file-formats-groups","tag-audio-file-formats-in-computer-graphics","tag-audio-format-amr","tag-audio-format-and-bitrate","tag-audio-format-defined","tag-audio-format-details","tag-audio-format-game","tag-audio-format-in-android","tag-audio-format-in-powerpoint","tag-audio-format-iphone","tag-audio-format-is-developed-by-mpeg","tag-audio-format-is-not-red-book-pcm","tag-audio-format-is-not-supported","tag-audio-format-is-not-supported-in-mx-player","tag-audio-format-is-not-supported-in-tv","tag-audio-format-js","tag-audio-formats","tag-audio-formats-aac","tag-audio-formats-all","tag-audio-formats-and-encoding","tag-audio-formats-android","tag-audio-formats-apple-tv-4k","tag-audio-formats-are","tag-audio-formats-are-supported-by-unity","tag-audio-formats-best-to-worst","tag-audio-formats-bit-rate","tag-audio-formats-blender","tag-audio-formats-browser","tag-audio-formats-browser-support","tag-audio-formats-cassette","tag-audio-formats-cd","tag-audio-formats-characteristics","tag-audio-formats-compared","tag-audio-formats-comparison","tag-audio-formats-compatible-with-hitfilm","tag-audio-formats-compatible-with-mac","tag-audio-formats-compatible-with-powerpoint","tag-audio-formats-convert","tag-audio-formats-definition","tag-audio-formats-device","tag-audio-formats-digital","tag-audio-formats-dolby","tag-audio-formats-examples","tag-audio-formats-explained","tag-audio-formats-for-ableton","tag-audio-formats-for-google-slides","tag-audio-formats-for-hitfilm","tag-audio-formats-for-imovie","tag-audio-formats-for-podcasts","tag-audio-formats-for-powerpoint","tag-audio-formats-for-tv","tag-audio-formats-for-web","tag-audio-formats-for-windows","tag-audio-formats-for-youtube","tag-audio-formats-from-the-highest-quality-to-lowest","tag-audio-formats-hi-res","tag-audio-formats-history","tag-audio-formats-html","tag-audio-formats-in-html5","tag-audio-formats-in-multimedia","tag-audio-formats-supported-by-android","tag-audio-formats-supported-by-html5","tag-audio-formats-supported-by-optical-cable","tag-audio-high-formats","tag-audio-quality-format","tag-audiobook-formats","tag-aws-transcribe-audio-formats","tag-bandcamp-audio-formats","tag-best-audio-format-for-audacity","tag-best-audio-format-for-music","tag-best-audio-formats","tag-blu-ray-audio-formats","tag-bluetooth-audio-formats","tag-bose-soundbar-700-audio-formats","tag-bose-soundbar-700-supported-audio-formats","tag-bose-soundtouch-300-audio-formats","tag-bose-tv-speaker-audio-formats","tag-browser-supported-audio-formats","tag-cd-audio-formats","tag-chrome-supported-audio-formats","tag-chromecast-audio-formats","tag-chromecast-with-google-tv-audio-formats","tag-common-audio-formats-are","tag-common-audio-formats-are-mcq","tag-compare-audio-formats","tag-compressed-and-uncompressed-audio-formats","tag-compressed-audio-formats","tag-convert-audio-formats","tag-davinci-resolve-aud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of mp3 and file format analysis. Part4 - mp4gain.com<\/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:\/\/mp4gain.com\/mp4gain\/principle-of-mp3-and-file-format-analysis-part4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Principle of mp3 and file format analysis. Part4 - mp4gain.com\" \/>\n<meta property=\"og:description\" content=\"Principle of mp3 and file format analysis. Part4 The three bytes starting at 1397H are 54 41 47, which store the “TAG” character, indicating that this file has ID3 V1.0 information. The 30 bytes starting at 139AH store the name of the song, the first 4 bytes that are not 00 are 54 45 53 … Continue reading "Principle of mp3 and file format analysis. 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Linkedin\",\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/ricardoariaszorrilla\/\"],\"url\":\"https:\/\/mp4gain.com\/mp4gain\/author\/mp4gain\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Principle of mp3 and file format analysis. Part4 - mp4gain.com","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:\/\/mp4gain.com\/mp4gain\/principle-of-mp3-and-file-format-analysis-part4\/","og_locale":"en_US","og_type":"article","og_title":"Principle of mp3 and file format analysis. Part4 - mp4gain.com","og_description":"Principle of mp3 and file format analysis. Part4 The three bytes starting at 1397H are 54 41 47, which store the “TAG” character, indicating that this file has ID3 V1.0 information. 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