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When used within the MP3 compression process, joint stereo normally employs multiple techniques, and can switch between them for each MPEG frame. Typically, a modern encoder's joint stereo mode uses M/S stereo for some frames and L/R stereo for others, whichever method yields the best result.
A lossless audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A lossy audio coding format additionally reduces the bit resolution of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.
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Audacity natively imports and exports WAV, AIFF, MP3, Ogg Vorbis, and all file formats supported by libsndfile library. Due to patent licensing concerns, the FFmpeg library necessary to import and export proprietary formats such as M4A (AAC) and WMA is not bundled with Audacity but has to be downloaded separately. [23]
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit resolution.
MP3 Surround is an extension of MP3 for multi-channel audio support including 5.1 surround sound. It was developed by Fraunhofer IIS in collaboration with Thomson and Agere Systems, and released in December 2004. [1] [2] [3] MP3 Surround is backward compatible with standard MP3.
Normally, sound files are presented on Wikipedia pages using the Template:Listen or its related templates. However, it is also possible to present an audio file without any template. [[File:Accordion chords-01.ogg]] Caption. The parameter |thumbmay be used to give the file a caption. That will also float the playbutton to the right.