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Lossless audio compression produces a representation of digital data that decompress to an exact digital duplicate of the original audio stream, unlike playback from lossy compression techniques such as Vorbis and MP3. Compression ratios are around 5060% of original size, which is similar to those for generic lossless data compression. Lossless compression is unable to attain high compression ratios due to the complexity of waveforms and the rapid changes in sound forms. Codecs like FLAC, Shorten and TTA use linear prediction to estimate the spectrum of the signal. Many of these algorithms use convolution with the filter [-1 1] to slightly whiten or flatten the spectrum, thereby allowing traditional lossless compression to work more efficiently. The process is reversed upon decompression.
What compression cannot attain high compression ratios?
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The answer: Lossless

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Sven-Goran Eriksson took charge of the team between 2001 and 2006, and was the first nonEnglish manager of England. Despite controversial press coverage of his personal life, Eriksson was consistently popular with the majority of fans.[citation needed] He guided England to the quarter-finals of the 2002 FIFA World Cup, UEFA Euro 2004, and the 2006 FIFA World Cup. He lost only five competitive matches during his tenure, and England rose to an No.4 world ranking under his guidance. His contract was extended by the Football Association by two years, to include UEFA Euro 2008. However, it was terminated by them at the 2006 FIFA World Cup's conclusion.
How many competitive matches were lost under the tenure of manager Sven-Goran Eriksson?
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The answer: five

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All of Chopin's compositions include the piano. Most are for solo piano, though he also wrote two piano concertos, a few chamber pieces, and some songs to Polish lyrics. His keyboard style is highly individual and often technically demanding; his own performances were noted for their nuance and sensitivity. Chopin invented the concept of instrumental ballade. His major piano works also include mazurkas, waltzes, nocturnes, polonaises, etudes, impromptus, scherzos, preludes and sonatas, some published only after his death. Influences on his compositional style include Polish folk music, the classical tradition of J. S. Bach, Mozart and Schubert, the music of all of whom he admired, as well as the Paris salons where he was a frequent guest. His innovations in style, musical form, and harmony, and his association of music with nationalism, were influential throughout and after the late Romantic period.
Whose music did Frederic admire the most and thus provide influence on his work?
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The answer: J. S. Bach, Mozart and Schubert

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For the 2011 season, the Philadelphia Soul, Kansas City Brigade, San Jose SaberCats, New Orleans VooDoo, and the Georgia Force returned to the AFL after having last played in 2008. However, the Grand Rapids Rampage, Colorado Crush, Columbus Destroyers, Los Angeles Avengers, and the New York Dragons did not return. The league added one expansion team, the Pittsburgh Power. Former Pittsburgh Steelers wide receiver Lynn Swann was one of the team's owners. It was the first time the AFL returned to Pittsburgh since the Pittsburgh Gladiators were an original franchise in 1987 before becoming the Tampa Bay Storm. The Brigade changed its name to the Command, becoming the Kansas City Command. Even though they were returning teams, the BossierShreveport Battle Wings moved to New Orleans as the Voodoo, the identity formerly owned by New Orleans Saints owner Tom Benson. The Alabama Vipers moved to Duluth, Georgia to become the new Georgia Force (the earlier franchise of that name being a continuation of the first Nashville Kats franchise). On October 25, 2010 the Oklahoma City Yard Dawgz did not return. The Milwaukee Iron also changed names to the Milwaukee Mustangs, the name of Milwaukee's original AFL team that had existed from 1994 to 2001.
For what NFL team did Lynn Swann play?
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The answer:
Pittsburgh Steelers