Energy (signal processing)

In signal processing, the energy of a continuous-time signal x(t) is defined as

the energy of a discrete-time signal x(t) is defined as

Relationship to energy in physics

Energy in this context is not, strictly speaking, the same as the conventional notion of energy in physics and the other sciences. The two concepts are, however, closely related, and it is possible to convert from one to the other:

For example, if x(t) represents the potential (in volts) of an electrical signal propagating across a transmission line, then Z would represent the characteristic impedance (in ohms) of the transmission line. The units of measure for the signal energy would appear as volt²·seconds, which is not dimensionally correct for energy in the sense of the physical sciences. After dividing by Z, however, the dimensions of E would become volt²·seconds per ohm, which is equivalent to joules, the SI unit for energy as defined in the physical sciences.

Spectral energy density

Seven Year Itch (Collective Soul album)

On September 18, 2001, Collective Soul released their greatest hits compilation Seven Year Itch: Greatest Hits, 1994-2001 (stylized as 7even Year Itch). The compilation includes songs recorded from 1994 to 2001 and included two new tracks; "Next Homecoming" and "Energy". Seven Year Itch received decent reviews and was relatively successful It sold 225,000 copies in the first year after its release and reached number fifty on the Billboard 200; in Canada, it reached number nine on its albums chart and went platinum. All the songs in Seven Year Itch had charted in the US on the Billboard Hot 100, Mainstream Rock Tracks, or the Modern Rock Tracks chart, except for "Energy", which debuted in this compilation.

The compilation has sold over 500,000 copies. It saw a resurgence in sales after Collective Soul began putting out albums on their own independent label, El Music Group, beginning in 2004.

Seven Year Itch was the last album Collective Soul released through Atlantic Records and their last album to feature guitarist Ross Childress, who had been with the band since its 1993/1994 debut.

Energy (Drake song)

"Energy" is the second single by Canadian rapper Drake from his fourth commercial release If You're Reading This It's Too Late.

Composition

"Energy" contains samples from Eazy-Duz-It performed by Eazy-E and Ridin Spiners performed by Three 6 Mafia. Energy was produced by Boi-1da and OB O'Brien. According to WhoSampled the song samples the score of an episode of The O.C..

Critical reception

"Energy" received acclaim from music critics with many calling it the best song of the album. Ryan Dombal of Pitchfork gave the song a positive review and named it "Best New Track", stating "The song isn't aimed to any rappers or pop stars, not Kendrick Lamar, Big Sean or Tyga, but the song lines are dangerous."

Music video

Release

The video of "Energy" was released on Apple Music and users with iTunes and registered Apple Music account can watch this video.

Synopsis

Reloaded (Rascalz album)

Reloaded is the fourth studio album by Canadian hip hop group Rascalz, released in 2002. The album spawned the hit single "Crazy World" which received heavy rotation on MuchMusic reaching #1 on the Top 30 Countdown. Another hit single from the album is "Movie Star" which was equally successful as the previous. The single's music video ended up reaching #6 on the MuchMusic Top 30 Countdown. The single was also a success in Germany reaching #14 on the German Black Music Chart.

Track listing

Lady Gaga discography

American singer Lady Gaga has released four studio albums, three compilation albums, three video albums, four EPs, twenty-three singles (including two as a featured artist), and seven promotional singles. Gaga made her debut in August 2008 with the studio album The Fame, an album that drew inspiration from 1980s music while incorporating dance music and clear hooks. The Fame peaked at number two in the United States and was subsequently certified triple platinum while also seeing large success in Europe where it topped the charts in Germany and the United Kingdom. Its first two singles, "Just Dance" and "Poker Face", were both successful worldwide, reaching number one in Australia, Canada, United Kingdom, and the United States. The album spawned three more singles: "Eh, Eh (Nothing Else I Can Say)", "LoveGame" and "Paparazzi", the latter, reached the top ten in many countries worldwide, including number one in Germany.

The commercial and critical success of her first album led to plans of a deluxe edition titled The Fame Monster which was ultimately released as a standalone EP in November 2009. It peaked at number one in Australia and reached number five in the United States, where it was certified platinum. Its lead single, "Bad Romance", became an international hit and reached number one in twelve countries while peaking at number two in the United States. Subsequent singles, "Telephone" and "Alejandro", were top ten hits in many countries. As of April 2012, combined sales of The Fame and The Fame Monster had reached in excess of 15 million copies worldwide. Consisting of various remixes of songs from both The Fame and The Fame Monster, Gaga's first compilation album The Remix was released in 2010. It peaked at number six in the United States while reaching the top five in Canada and the United Kingdom. The remix album has sold 500,000 copies worldwide, therefore making it one of the best-selling remix albums of all time.

Enrique Iglesias

Enrique Miguel Iglesias Preysler (/ɛnˈriːkeɪ ɪˈɡlɛsiəs/; Spanish: [enˈrike iˈɣlesjas]) (born 8 May 1975), is a Spanish recording artist and record producer. He is widely regarded as the King of Latin Pop. Iglesias started his career in the mid-1990s on an American Spanish Language record label Fonovisa under the name Enrique Martinez, before switching to the stage name Enrique Iglesias, and turning into one of the biggest stars in Latin America and the Hispanic Market in the United States. By the turn of the millennium, he had made a successful crossover into the mainstream market and signed a multi-album deal with Universal Music Group for US $68,000,000 with Universal Music Latino to release his Spanish albums and Interscope to release English albums. In 2010, he parted with Interscope and signed with another Universal Music Group label Republic Records to release bilingual albums. In 2015, Enrique parted ways with Universal music group after a decade. He signed for Sony Music and it has been reported that it is one of the biggest contracts offered to any artist in recent years in terms of advances and royalties. His upcoming albums will be by Sony Music Latin in Spanish and RCA in English.