In signal processing, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder.
In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storing, handling, and transmitting content. The different versions of the photo of the cat to the right show how higher degrees of approximation create coarser images as more details are removed. This is opposed to lossless data compression which does not degrade the data. The amount of data reduction possible using lossy compression is much higher than using lossless techniques.
Lyndon Hermyle LaRouche Jr. was an American political activist, convicted fraudster and cult leader who founded the LaRouche movement and its main organization the National Caucus of Labor Committees (NCLC).
Audio compression may refer to:
The acronym LTAC can designate:
The National Caucus of Labor Committees (NCLC) is a political organization in the United States founded and controlled by political activist Lyndon LaRouche until his 2019 death. LaRouche sometimes described the NCLC as a "philosophical association."
Lyndon LaRouche's U.S. presidential campaigns were a controversial staple of American politics between 1976 and 2004. LaRouche ran for president on eight consecutive occasions, a record for any candidate, and tied Harold Stassen's record as a perennial candidate. LaRouche ran for the Democratic nomination for President of the United States seven times, beginning in 1980.
High definition or HD may refer to:
Jeremiah Joseph Duggan was a British student in Paris who died during a visit to Wiesbaden, Germany, after being struck by several cars on a dual carriageway. The circumstances of Duggan's death became a matter of dispute because, at the time he died, he was attending a youth "cadre" school organised by the LaRouche movement, an international network led by the American political activist Lyndon LaRouche.
APAC or Apac may refer to:
MPEG-4 Audio Lossless Coding, also known as MPEG-4 ALS, is an extension to the MPEG-4 Part 3 audio standard to allow lossless audio compression. The extension was finalized in December 2005 and published as ISO/IEC 14496-3:2005/Amd 2:2006 in 2006. The latest description of MPEG-4 ALS was published as subpart 11 of the MPEG-4 Audio standard in August 2009.
The Worldwide LaRouche Youth Movement and the LaRouche Political Action Committee are part of the political organization of controversial American political figure Lyndon LaRouche. The LYM's "war room" is in Leesburg, Virginia, also the headquarters of LPAC. The LaRouche Youth Movement describes itself as an international political movement of young adults, led by Lyndon LaRouche, who promote the revival of classical humanist thought, organize politically to establish a new world economic system based on the power of human creativity to increase the power of the human individual in relation to the universe, and fight for a physical economy which can promote the general welfare of humanity, to develop and move towards better living conditions.
The LaRouche movement is a political and cultural network promoting the late Lyndon LaRouche and his ideas. It has included many organizations and companies around the world, which campaign, gather information and publish books and periodicals.
XZ, X.Z., or xz may refer to:
FLAC stands for Free Lossless Audio Codec, an audio data compression scheme.
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