Symhpony

MTV ( Music Television ) is an American cable television network based in New York City. Launched on August 1, 1981, the original purpose of the channel was to play music videos. Today, MTV plays a limited selection of music videos but primarily broadcasts a variety of pop culture, youth culture, and reality television shows aimed at adolescents and young adults.

Since its premiere, MTV has revolutionized the music industry. Slogans such as "I want my MTV" became embedded in public thought, the concept of the VJ (video jockey) was popularized, the idea of a dedicated video-based outlet for music was introduced, and both artists and fans found a central location for music events, news, and promotion. MTV has also been referenced countless times by musicians, other TV channels and shows, films and books.

MTV has spawned a handful of sister channels in the U.S. and dozens of affiliated international channels around the world. MTV's moral influence on young people, including examples of censorship and social activism on the channel, has been the subject of debate for years. MTV's choice to focus on non-music programming has also been contested relentlessly, demonstrating the channel's continued impact on popular culture.

A ringtone or ring tone is the sound made by a telephone to indicate an incoming call. The term, however, is most often used to refer to the customizable sounds available on mobile phones.

A phone only rings when a special "ringing signal" is sent to it. For landline telephones, the ringing signal is a 90-volt, 20-hertz, AC wave generated by the switch to which the telephone is connected. For mobile phones, the ringing signal is a specific radio-frequency signal.

A telephone ring is the sound generated when an incoming telephone call is received. The term originated from the fact that telephones notified the user to an incoming call by repeatedly striking a bell or bells, producing a ringing sound. This "Magneto" bell system is still in widespread use. The ringing signal sent to a customer's telephone utilized AC at 90 volts and 20 hertz in North America. While the sound produced is still called a "ring," more recently manufactured telephones electronically produce a warbling or chirping sound. The signal is sent for every ring and allows phone operators to provide several services with different kinds of rings (for example, rings with a shorter interval between them might be used to signal a call from a given number). When a phone rings — either landline or mobile/cell phone — it may carry Caller ID information and present it on a screen.