Archive for March, 2011
Digital Radio
Traditionally, radio stations have always broadcasted in its regular, analog format. FM and AM radio could both be heard all over the world depending on the signal strength in each listening area. A couple of decades ago though, analog radio has been replaced by a better type of radio; digital radio. Digital radio has grown in popularity tremendously since it first debuted, and shows no signs of any decrease in popularity because it is all around better than traditional, analog radio. During the process of radio stations switching over from analog radio to digital radio, most stations broadcasted in a hybrid signal that could be heard by regular radio listeners as well as digital radio listeners.
Over time however, the hybrid signals were no longer used because the complete switch over to digital finally happened. Analog radio offered a selection of different AM and FM radio stations in each listening area but once the switch over to digital was complete, listeners could enjoy even more stations in their area thanks in part to the stronger digital signal. With digital radio, FM stations were broadcasted with such a clear and crisp signal that the music sounded the same quality as that on a CD. AM stations also improved significantly by gaining the same sound quality as traditional FM radio.
To listen to all of the advantages that digital radio had to offer, listeners would have to purchase a digital receiver to pick up the digital signals. Digital receivers could not only pick up all the newer digital stations, but they could also pick up all of the regular radio stations that were around before digital radio. The downside to purchasing a digital receiver lies in the cost; the cost of a digital receiver was considered rather pricey when compared to a regular, non digital radio.
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New Generation Radio Broadcasting ? Digital Radio
Gadget and music are close friends of human beings. In the long list of gadgets from which music can be listened, radio is on the top in terms of price and accessibility. Apart from music, other programs like talk shows, humour programs, reality shows are also broadcasts. Being commercial-free radio broadcasting, the digital radio is the new generation radio which comes with more services, clearer reception and a range of other features. This is including of record and rewind capability, text information regarding programs and songs broadcasted in the air, graphics, pictures, web pages and turning by station name. It is now well established in the various parts of Europe, UK and Asia. It uses Digital Audio Broadcasting (DAB), which is also known as Eureka 147, for broadcasting. In the year 1999, first commercial receivers began. ‘Spart gap telegraphy’ was the oldest form of digital broadcasting, used by one of the pioneers, Marconi. By 2006, 1000 digital audio broadcasting stations were in operation and 500 million people were in the coverage area.
In this 21st century, most new radio systems are digital. It has some fabulous features like easier tuning and more choice of stations. It also has a small screen for text information about the programs on air. This might includes song and artist details about the music you are hear, business news and sports results, the latest news and weather. DAB radio technology can double the number of radio stations you can get on FM, because of the way it transmits a signal and for this technology sound is not interrupted. There is no hiss, crackle, overlap, or fading, just great radio all the time.
Apart form normal FM radio, it can be of two types – Satellite radio and Internet radio. A satellite radio which is also called subscription radio, broadcasts by a communication satellite, covers a much wider geographical range than territorial radio signals. These type of radio services are usually provided by commercial ventures and are subscription-based.