...gnals. Examples are [[MP3]] audio or mpeg-4 video (see [[MPEG-4 Visual]]). Codecs can be used with both [[Streaming]] (live video or audio) or file-based (e.
* [[Lossy]]
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'''Macintosh Audio Compression/Expansion''' ('''MACE''') is a lossy, proprietary compression scheme developed by Apple Computer for their Macin
...are better alternatives quality-wise (ADPCM, WavPack lossy, psychoacoustic codecs)
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'''RK Audio''' ('''RKAU''') is a legacy [[lossless]] (and [[lossy]]) audio [[codec]] for the Windows platform. It was developed by Malcolm Ta
...simple" lossless profile), but the user should be cautioned that the other lossy profile ("VRQ") is decoded wrong and produces noise without giving any warn
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; [[Lossy]] codecs:
* There are other lossy codecs at the [[lossy]] page.
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'''Tarkin''' is an experimental lossy video codec formerly under development by the Xiph.org Foundation. Tarkin h
...ontrast to the more traditional method used in Theora and most other video codecs of doing a 2-D discrete cosine transform on single frames of video and doin
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...elet transform based codecs, like [[Ogg]] [[Tarkin]]. It can compress both lossy and lossless data.
[[Category:Video codecs]]
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...Differential Pulse Code Modulation''' ('''ADPCM''') is a very widely used lossy coding scheme.
...h instead of quantizing the sound signal directly, like [[PCM|linear PCM]] codecs, quantize the difference between the sound signal and a prediction that has
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...hen both are present. The correction stream can be in the same file as the lossy stream, or in a separate file.
...use) to be copied without the time or computing effort needed to transcode lossy to lossless every time; rather than keeping two sets of files, one can main
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'''Lossy''' compression is a form of compression that significantly reduce multimedi
Human audio perception is not perfect. Lossy compression takes advantage of this characteristic. By selective discarding
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...ly used in Blu-ray and HD-DVD – optionally, competing with the Dolby codecs family. It is an extension of the older [[DTS|DTS Coherent Acoustics]] code
...TS++, provides for lossless audio. It is a [[hybrid codec|hybrid lossless/lossy]] codec with a "core" DTS CA stream, for devices only supporting that forma
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...ft's compressed audio formats; "WMA" is a generic name for several [[codec|codecs]]. .wma ''files'' (and .wmv files) are [[ASF]] container files with a suff
...ia.org/wiki/Comparison_of_digital_music_stores</ref> (Qobuz, offering both lossy and lossless WMA<ref>https://help.qobuz.com/en/articles/10167-what-are-the-
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...s to silence to avoid glitches with gapless tracks when encoded with lossy codecs. Meant to be used with the Converter component when creating files for port
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== Codecs ==
...forms (non-Archos) supports playback of eleven [[lossy compression|lossy]] codecs (depending on how one counts), five [[lossless data compression|lossless]],
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...increase quality by converting a lossy compressed file to a higher-bitrate lossy compressed file?
...mal MP3 encoding destroys surround sound information. Go see the page on [[lossy]] encoding.
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...: New lossless MP3 format explained]</ref> It is a [[hybrid codec|lossless/lossy hybrid]] extension of the [[MP3]] format, containing an ordinary mp3 stream
{{navbox audio codecs}}
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| type = lossy
...(then called MP+) because he was unsatisfied with the audio quality of MP3 codecs at the time. It is strongly based on the [[MPEG-1]] Layer-2 ([[MP2]]) algor
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...fication] (CC0 licensed)</ref>. It is not intended to compete with current lossy encoders in terms of near-transparency at low bitrates – indeed, "low
...ash; is then replaced by one out of eight hard-coded values (this is the [[lossy]] part).
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The psychoacoustic model provides for high quality [[lossy]] signal compression by describing which parts of a given digital audio sig
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...n to person, these tests provide some additional data points for comparing lossy encoders.
! Date !! Title<br>Samples !! Performed by !! Codecs !! Links
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...e larger than audio compressed with any (reasonable) [[lossy]] encoder, as lossy compression aims at saving space by replacing the original signal by an app
...t transfer metadata bit-by-bit, only the audio - although certain lossless codecs can also store the original's metadata in a separate chunk to be recreated.
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