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Audio codec - Wikipedia, the free encyclopedia (173 words) |
 | An audio codec is a computer program that compresses/decompresses digital audio data according to a given audio file format or streaming audio format. |
| Most codecs are implemented as libraries which interface to one or more multimedia players, such as XMMS, Winamp or Windows Media Player. |
| When used in this manner, the phrase audio codec refers to the device encoding an analog audio signal to a digital audio signal, or decoding an analog audio signal from a digital audio signal. |
| Advanced Audio Coding - Wikipedia, the free encyclopedia (1830 words) |
| AAC was designed as an improved-performance codec relative to MP3 (which was specified in MPEG-1 and MPEG-2) by the ISO/IEC in 11172-3 and 13818-3. |
| AAC is a wideband audio coding algorithm that exploits two primary coding strategies to dramatically reduce the amount of data needed to represent high-quality digital audio. |
| The MPEG-4 audio standard does not define a single or small set of highly efficient compression schemes but rather a complex toolbox to perform a wide range of operations from low bitrate speech coding to high-quality audio coding and music synthesis. |
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