TOPIC: Other countries • The digital radio and situation in Spain
Other countries • The digital radio and situation in Spain #535
The transformation from analogue to digital has been one of the major revolutions occurred in recent years in the field of information and communications technology (ICT), enabling not only improved the quality of services, but also a spectacular diversity of these increase. This change has also occurred in the broadcasting services, including radio and television.
Digital television is a reality that is part of our daily lives through different means of distribution: cable, satellite, DSL and GPON (IPTV) and terrestrial television (DTT). DTT not only provides users with the ability to receive many more channels on your TV similar to DVD quality, but also add interactivity. At the end of April 2010 came the "analogue blackout" of television, thus closing definitively issuing analog signals and completing the migration to DTT environment. This "blackout" released a series of radio spectrum that allowed the appearance of several DTT channels. In addition, the additional spectrum provided in the near future, the deployment of mobile networks 4G / LTE. It represents digital radio for terrestrial digital radio, the same as DTT (Digital Terrestrial Television) for television.
One of the reasons why the passage to DTT accelerated was the "analogical blackout". However, at the moment there are no plans for an analog radio blackout and both systems is likely to coexist for many years. DTT was important vacating frequencies used by both the high bandwidth occupied, for their appeal to be used by mobile operators. Instead, the space used by analog radios is much lower and, moreover, can not be used for other purposes. Therefore, there is a common incentive for all industry players to make an "analog blackout".
The terrestrial digital radio, also known as DAB radio, broadcast in Spain since 11 years. However, despite its significant improvements in sound quality and signal reception, this technology is not widespread among consumers, unlike digital terrestrial television (DTT). The main cause of their low diffusion is the need for a specific receiver to listen to their programming and lack of incentives for "analog blackout" similar to DTT.
Efforts to create a digital broadcasting system began during the decade of the 1980s. In Europe the studies were channeled through 147 Eureka project and the main purpose was to gain in quality, resulting in DAB. In the United States, however, the company iBiquity led the design of the new system, with the main objective a very adaptive system that would allow a gradual change of the receptors, resulting in IBOC. Currently, as shown in Figure 1, three digital broadcasting systems: IBOC (in-band on-channel), DAB (Digital Audio Broadcasting) and DRM (Digital Radio Mondiale). IBOC has been implemented with relative ease in the countries that adopted this sistema.Estadísticas: Posted by
- 21 Apr 2015, 14: 25 - Answers 6 - 83 Views