RADIO

Radio

Radio

Introduction

The radio is a media that rely on sending signals to audio waves through radio, although the term is also used for other forms of sending audio to distance and Internet radio. Radio is the technology and practice that enables the transmission and reception of information carried by long-wave electromagnetic radiation. Radio makes it possible to establish wireless two-way communication between individual pairs of transmitter and receiver, and it is used for one-way broadcasts to many receivers. Radio signals can carry speech, music, telemetry, or digitally-encoded entertainment (Christenson, 2004). Radio is used by the general public, within legal guidelines, or it is used by private business or governmental agencies. Cordless telephones are possible because they use low-power radio transmitters to connect without wires. Cellular telephones use a network of computer-controlled low power radio transmitters to enable users to place telephone calls away from phone lines. History

In the 1990's, the new digital technologies begin to apply to the world of radio. Increases the sound quality and are tested with satellite radio (also called HD radio); this technology allows the resurgence in interest in radio.

Low Power Radio

In the recent history of radio, have appeared low-power radios, set up under the idea of free radio or community radio, with the idea of opposing the imposition of monologue commercial messages and to allow greater proximity to the radio with the community.

Internet Radio

Today the radio through the Internet moves quickly. Banda ancha So many influential radio stations began experimenting with webcasts, the first and simplest is an online broadcast, which reaches a global audience, in fact, its rapid development has led to a rivalry with television, what be coupled with the development of broad-band Interne (Fetto, 2002).



Technical aspects

The radio is the technology that enables the transmission of signals by modulation of electromagnetic waves. These waves do not require a physical means of transportation, so they can spread both through the air as space. A radio wave is created when a charged particle (an electron) is excited at a frequency located in the radio frequency (RF) electromagnetic spectrum. When the radio wave acts on an electrical conductor (the antenna), it induces a movement of electric charge (electric current) that can be transformed into audio signals or other signals carrying information (Christensona, & DeBenedittis, 2006). Language radio: the phrase

As a means of communication, requires a form of transmission. The act of speaking is at its height, so it is crucial to the radio journalist control his voice, which is its tool. For Sanabria, "the timbre, pitch, loudness, intonation, accent, modulation, speed and intervals are the nuances that determine the style of radio.

The language radio is composed of some rules that make communication possible. Each brings a need for understanding the message (Taylor, 2000):

1.The voice brings the dramatic

2.The word, the conceptual image

3. The sound describes the physical context

4.The music conveys the feeling

5. Silence, valuation

Radio Message

The radio transmits its message in the form of sound. According to Mariano Cebrian, professor of journalism, "the technique is so crucial that it ...