Advanced Audio Coding
Advanced Audio Coding AAC is a standardized lossy compression and encoding scheme for digital audio. Designed to be the successor of the MP3 format AAC generally achieves better sound quality than MP3 at the same bitrate particularly below 192 kb..
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Bit rate
In telecommunications and computing bitrate sometimes written bit rate data rate or as a variable R or fb is the number of bits that are conveyed or processed per unit of time. Bit rate is synonymous with data rate. The bit rate is quantified usi..
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Broadband Internet access
A WildBlue Satellite Internet dish. Broadband Internet access often shortened to just "broadband" is high speed Internet access—typically contrasted with dial up access over a modem. Dial up modems are generally only capable of a maximum bitrate ..
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Cook Codec
The cook codec is a lossy audio compression codec developed by RealNetworks. It is also known as Cooker Gecko RealAudio G2 and RealAudio 8 low bitrate RA8LBR. Introduced in 1998 the cook codec was the first audio codec developed by RealNetworks i..
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Dolby Digital Plus
Dolby Digital Plus logo Dolby Digital Plus DD+ or E AC 3 is a digital audio compression scheme developed specifically for the introduction of HDTV and HD DVDBlu ray Disc. It is a development of the earlier Dolby Digital system. Compared to Dolby ..
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HE-AAC
High Efficiency AAC HE AAC is a lossy data compression scheme for digital audio. It is an extension of Low Complexity AAC AAC LC optimized for low bitrate applications such as streaming audio. HE AAC version 1 HE AAC v1 uses Spectral Band Replica..
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Lumi masking
Lumi masking is a technique used by video compression software which reduces quality in very bright or very dark areas of the picture as quality loss in these areas is less likely to be visible. It is also known as "psychovisual enhancements" or ..
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Mp3PRO
mp3PRO is an audio compression algorithm or codec that combines the MP3 audio format with spectral band replication compression methods. It claims to achieve transparency at lower bitrates than MP3 resulting in a file nearly half the size of stan..
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MPEG-1
MPEG 1 defines a group of Audio and Video AV coding and compression standards agreed upon by MPEG Moving Picture Experts Group. MPEG 1 video is used by the Video CD VCD format and less commonly by the DVD Video format. The quality at standard VCD..
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POTS codec
A POTS codec is a device used in broadcast engineering to send high fidelity digital audio over regular telephone lines. A hardware codec implemented with digital signal processing is used to compress the audio data enough to travel at a bitrate ..
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QDX
QDX is an old lossy audio compression format designed for portable multimedia players with small amount of memory. Overview . . QDX files are encoded at 128 kbits but bitrate can be "peeled" so that lower bitrate stream can be extratced and sav..
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RMVB
RealMedia Variable bitrate RMVB is a variable bitrate extension of the RealMedia multimedia container format developed by RealNetworks. As opposed to the more common RealMedia container which holds streaming media encoded at a constant bit rate R..
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Smart Bitrate Control
Smart bitrate Control commonly referred to as SBC was a technique for achieving greatly improved video compression efficiency using the DivX ; 3.11 Alpha MPEG4 video codec and the Nandub video encoder. SBC relied on two main technologies to achie..
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Theora
Theora is an open and royalty free lossy video compression technology being developed by the Xiph.Org Foundation as part of their Ogg project. Based upon On2 Technologies' VP3 codec Theora is targeted at competing with MPEG 4 WMV and similar low ..
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TwinVQ
TwinVQ transform domain weighted interleaved vector quantization is an audio compression technique developed by Nippon Telegraph and Telephone Corporation NTT. The compression technique has been used in both standardized and proprietary designs. ..
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