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

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

Energy (Melissa Manchester song)

"Energy" is a song performed by American singer Melissa Manchester, from her 1985 album Mathematics.

Details

The song was arranged by veteran songwriter Greg Mathieson and was released as the second single from the album, following the underperformance of the lead single "Mathematics", MCA hoped to reverse the album's fortune by releasing this Hi-NRG track with an aim for the club market.

Melissa Manchester filmed a videoclip to promote the song, which sees the singer and her band in a sort of industrial-setting stage performing the song.

The single was released on 7" and 12" formats featuring remixes, but it failed to chart either on the Billboard Hot 100 or the dance charts, and failed to chart elsewhere. The b-side to the single was a non-album song, called "So Full Of Yourself", which was co-written by Manchester and Tom Snow and used as the b-side to all 3 singles off the album.

Track listings

Bush

Bush may refer to:

People

Places, United States

Places, elsewhere

Organisations

Bush (surname)

The surname Bush is an English surname, derived from either the Old English word "busc" or the Old Norse "buskr," both of which mean "bush," a shrub.

Variations on the English spelling "Bush" include: Bushe, Bosch, Boush, Boushe, Busch, Bussche, Buscher, Bysh, and Bysshe.

The Bush family has held a family seat in Yorkshire, Northern England.

People with the surname Bush name include:

Members of the United States political Bush family

W. (film)

W. is a 2008 American biographical drama film loosely based on the life and presidency of George W. Bush. It was produced and directed by Oliver Stone, written by Stanley Weiser, and stars Josh Brolin as Bush, with a supporting cast that includes Ellen Burstyn, Elizabeth Banks, James Cromwell, Thandie Newton, Jeffrey Wright, Scott Glenn, and Richard Dreyfuss. Filming began on May 12, 2008, in Louisiana and the film was released on October 17.

Plot

The film opens with George W. Bush (Josh Brolin), dreaming of being a baseball player and is in the stadium with an empty crowd cheering for him. In 1966, Bush endures an alcohol-fueled initiation by his fellow Yale University students as a Delta Kappa Epsilon pledge. During the hazing, Bush successfully recalls the names and nicknames of many of the fraternity members, and states that his family's political legacy is one in which he has no interest. A little later, after Bush is jailed in New Jersey for rowdiness following a football game, his father, George H. W. Bush (James Cromwell), states that he will help Bush, but for the last time. Following his graduation from Yale, Bush takes a job at an oil patch back in his home state of Texas, but he quits after only a few weeks. In 1972, "Junior" reveals his real aspirations in a father-son talk: working in professional baseball, in some capacity. Soon afterwards, Bush is accepted into Harvard Business School with the help of his father. That night after drinking heavily, Bush crashes his car into his family estate and challenges his father to a fistfight. His brother, Jeb (Jason Ritter) intervenes and stops the fight.