Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home > Inverse discrete cosine transform

iDCT is an acronym for inverse Discrete Cosine Transform, a transformation step commonly used in software that works with different multimedia formats such as MP3, Vorbis, MPEG or JPEG.

One-dimensional iDCT can be thought of as moving a digitized signal from the frequency domain into the time domain, but in the case of e.g. JPEG the two-dimensional DCT makes this analogy somewhat invalid.

Several hardware implementations exist for efficient iDCT, it is a common feature of MP3 players and some graphics cards, but iDCT can also be done in software, for example mpg123, a media player for UNIX, employ efficient assemblerThis article is about a computing term. See Assembler (disambiguation) for other meanings''. An assembler is a computer program for translating assembly language — essentially, a mnemonic representation of machine language — into object code. A cross asse code for the iDCT step of MP3 decoding.

<Hide>

Topics: Inverse Discrete Cosine Transform, Inverse Function...

Inverse functionIn mathematical analysis, an inverse function is in simple terms a function which "does the reverse" of a given function. More formally, if f is a function with domain X, then f -1 is its inverse function if and only if for every we have: :. For example,	Inverse limitIn mathematics, the inverse limit (also called the projective limit is a construction which allows one to "glue together" several related objects, the precise matter of the gluing process being specified by morphisms between the objects. Inverse limits ca	Inverse multiplexerAn inverse multiplexer (often abbreviated to "inverse mux", "imux" or "demux") allows a data stream to be broken into multiple lower data rate communications links. An inverse multiplexor differs from a demultiplexer in that each of the low rate links com
Inverse-square lawIn physics, an inverse-square law is a physical law stating that some quantity is inversely proportional to the square of the distance from a point. In particular, the gravitational attraction between two massive objects, in addition to being directly pro	Inverse elementIn mathematics, the idea of inverse element generalises both of the concepts of negation, in relation to addition (see additive inverse), and reciprocal, in relation to multiplication. The intuition is of an element that can 'undo' the effect of combinati	Inverse transform sampling methodThe inverse transform sampling method is a method of sampling a number at random from any probability distribution, given its cumulative distribution function (cdf). The problem that the inverse transform sampling method solves is as follows: Let X be a r
Inverse gambler's fallacy	Inverse chain rule method	Inverse functions and differentiation
Inverse (logic)	Inverse discrete cosine transform	Inverse kinematic animation
Inverse	Inverse problem	Inverse function theorem

Non User