sub-band coder

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• Dictionary coder — A dictionary coder, also sometimes known as a substitution coder, is a class of lossless data compression algorithms which operate by searching for matches between the text to be compressed and a set of strings contained in a data structure… …   Wikipedia

• Polyphase matrix — In signal processing,a polyphase matrix is a matrix whose elements are filter masks.It represents a filter bank as it is usedin sub band coders alias discrete wavelet transforms.Gilbert Strang and Truong Nguyen. Wavelets and Filter Banks… …   Wikipedia

• JPEG 2000 — Infobox file format name = JPEG 2000 caption = Comparison of JPEG 2000 with the original JPEG format. extension = .jp2, .j2k mime = image/jp2 owner = Joint Photographic Experts Group creatorcode = jp2 genre = graphics file format containerfor =… …   Wikipedia

• Motion compensation — is an algorithmic technique employed in the encoding of video data for video compression, for example in the generation of MPEG 2 files. Motion compensation describes a picture in terms of the transformation of a reference picture to the current… …   Wikipedia

• Secure voice — (alternatively secure speech or ciphony) is a term in cryptography for the encryption of voice communication over a range of communication types such as radio, telephone or IP. Contents 1 History 2 Analog Secure Voice technologies 3 Di …   Wikipedia

• Progressive Graphics File — Infobox file format name = PGF extension = .pgf mime = owner = xeraina GmbH creatorcode = type = wavelet based bitmapped image format container for = contained by = extended from = extended to = PGF (Progressive Graphics File) is a wavelet based… …   Wikipedia

• Data compression — Source coding redirects here. For the term in computer programming, see Source code. In computer science and information theory, data compression, source coding or bit rate reduction is the process of encoding information using fewer bits than… …   Wikipedia

• Dynamic Markov compression — (DMC) is a lossless data compression algorithm developed by Gordon Cormack and Nigel Horspool [1]. It uses predictive arithmetic coding similar to prediction by partial matching (PPM), except that the input is predicted one bit at a time (rather… …   Wikipedia

• Entropy encoding — In information theory an entropy encoding is a lossless data compression scheme that is independent of the specific characteristics of the medium. One of the main types of entropy coding creates and assigns a unique prefix free code to each… …   Wikipedia

• MPEG-2 — Not to be confused with MPEG 1 Audio Layer II (MP2). MPEG 2 is used in Digital Video Broadcast and Digital Versatile Discs. The MPEG transport stream, TS, and MPEG program stream, PS, are container formats. MPEG 2 is a standard for the generic… …   Wikipedia

• Codec — This article is about encoding and decoding a digital data stream. For other uses, see Codec (disambiguation). Further information: List of codecs A codec is a device or computer program capable of encoding and/or decoding a digital data stream… …   Wikipedia