{"id":348,"date":"2019-08-27T15:14:55","date_gmt":"2019-08-27T15:14:55","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=348"},"modified":"2019-08-27T15:14:55","modified_gmt":"2019-08-27T15:14:55","slug":"sound-formats-and-audio-normalization","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/sound-formats-and-audio-normalization\/","title":{"rendered":"Sound formats and audio normalization"},"content":{"rendered":"

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WAV:<\/strong> It is the “pure” sound format, without any compression. Its weight is huge, as is its quality. Only recommended for professional works or to edit the audio before transferring it to a format with compression.
\nMP3:<\/strong> We’ve talked about him in the previous pages. Without a doubt, it is the most popular and widespread format. His appearance changed the way we listen to music.
\nOGG:<\/strong> It is the audio format of GNU \/ Linux, the free software MP3 version. It has all the virtues of MP3 (and more), but not all portable players can use it, but it is getting more and more.
\nWMA:<\/strong> Microsoft format, your own version of the MP3. It compresses quite well, but it is not as widespread as the MP3. Nor can all portable players use it.
\nMID:<\/strong> It is the audio format also known as MIDI (Musical Instrument Digital Interface). It is the only format that can not play more than music simply because what it contains inside are not sounds. Simplifying, it contains a series of instructions for special software included in all systems, a kind of digital synthesizer that can generate sounds like those of many musical instruments. The MID has inside what notes they have to sound and with what instruments: a score.<\/p>\n

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It is important to clarify the distinction between audio format and audio codec. The codec encodes and decodes the audio data while this data is archived in a file that has a specific audio format.<\/p>\n

Most of the formats listed below are container formats, formats that group different types of data. Most of these container formats have only one codec associated, next to which metadata is stored. However, there are formats that group audio and video data produced by different codecs. Some of these container formats that group different types of data are: MP4, Ogg, WAV, QuickTime Format, AVI.<\/p>\n

In this article we talk about audio formats, but we are really discussing the properties of the codec associated with the format.<\/p>\n

When classifying audio formats we can distinguish three large groups.<\/p>\n

No data compression:<\/strong> These are real sound waves that have been captured and converted to digital format without further processing. As a result, uncompressed audio files tend to be the most accurate.
\nWith compression, without loss of data:<\/strong> Compression algorithms are used to reduce file sizes; It basically works by eliminating redundancy.
\nWith compression and data loss: It is a form of compression that loses data during the compression process. In the context of audio, that means sacrificing quality and fidelity to decrease file size. The good news is that, in most cases, we will not notice the difference when listening.<\/p>\n

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