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

Introduction

Introduction, The Introduction, Intro, or The Intro may refer to:

Ich Troje

Ich Troje ("The Three of Them") is a Polish pop band. Former members are Magdalena Pokora (aka Magda Femme, 1996–2000), Justyna Majkowska (2000–2003), Elli Mücke (2003) and Ania Wisniewska (2003–2010).

Ich Troje was founded in 1996 by songwriter Michał Wiśniewski and composer Jacek Łągwa.

Despite this, the group had five members when taking part in the Eurovision Song Contest 2006, with German rapper O-Jay (Olaf Jeglitza) as the fifth member.

Their music is castigated by critics, and Michal Wisniewski has said himself that he can't actually sing.

Nevertheless, since 2000, Ich Troje has been one of the most successful Polish groups. They have sold more than 1.5 million records since June 2001. For the past two years, Ich Troje have given over 300 concerts. Their songs are typically about love, betrayal and break-ups.

On 25 January 2003, Polish TV viewers chose Ich Troje to represent them in 2003 Eurovision Song Contest by televoting. They performed a song called Keine Grenzen-Żadnych granic, which was sung in three languages: (Polish, German, and Russian). The song finished seventh. A fully German version of the song was recorded as well.

Trust in Few

Trust in Few is the debut and only album of Ocala metalcore band We Are Defiance, released in March 2011.

Background and recording

The band announced that Tyler "Telle" Smith of The Word Alive and Danny Worsnop of Asking Alexandria would be featured on one track each. Smith was featured on the track "Not Another Song About You", though Worsnop was pulled off Trust in Few by his label Sumerian due to the fact the bands' records came out too close together.

The album was produced by ex-A Day to Remember guitarist Tom Denney, who also engineered, mixed and mastered the album at Diamond Studios in Ocala, Florida.

Release

Originally set for release on March 15, the release was delayed after a car accident the band had while touring through the US at the beginning of 2011, when lead vocalist Brian Calzini was brought into the hospital.

"To the Moon", "I'm Gonna Bury You Underground Eli" and "Weight of the Sea" were all released as singles prior to the album's release, with a music video shot for "It's Not a Problem Unless You Make It One".