Digital Audio Broadcast which is also called Digital Radio is also given the name radio Numerique Terrestre in Paris de France. It is a contemporary way of transmitting radio stations via airwaves. On reading this article you will be able to understand how Digital Audio Broadcast works as well as the merits and the setbacks of this famous technology. One of the radio stations that operate in France is World Radio. This radio is not on the Frequency Modulation band so you will need to have a new set of radio type. The most common areas where you can find the DAB radios are such as kitchen sets, portable radios, and cars.
How does it work?
On Frequency Modulation (FM), every frequency has a station assigned to it. For example, you can access France Inter on 87.8 Mhz. The frequencies on DAB range from 174 to 230 Mhz. World Radio Paris is set to air on 202 Mhz. This information is however not necessary to listeners since radio sets of the digital era just display the name of all the radio stations that are available. It is also interesting to note that several stations can be aired from one antennae and this cannot be done on Frequency Modulation mode. The receiver has the ability to decode the data that it receives from the airwaves and is able to select just one station out of the many that can be reached from the said frequency.
This technology of having several radio stations on one frequency is referred to as a multiplex. The broadcasting cost is paid through a cost sharing mechanism making it easy to completely fill the multiplex fully with all thirteen stations. Some countries have a larger allowance on one multiplex. For instance, Switzerland allows up to 20 stations on one multiplex but the cost is lower and the quality of the signal is also low.
Benefits and demerits of Digital Audio Broadcast
Digital Audio Broadcast has the ability to offer outstanding quality of audio which is not static. You will realize that texts and pictures are attached to the aural signal. You will also have the leeway of enjoying more radio stations on DAB as opposed to the few that you can access on FM mode.
On the other hand, the presence of many stations on one frequency mode means that the stations have to gather and agree on every financial and technical detail which is not a walk in the park. You should also note that DAB makes of several radio receivers which will definitely replace all the machines that you have been using in your home.
Where to hear DAB
DAB has been in use in several countries and more are getting to the practice of adopting the technology. United Kingdom is already used in using DAB. However, the last few years have seen the introduction of DAB in their frequencies. They include the Netherlands, Italy, Germany, France, and Italy. Various other parts of the world have also embraced DAB with time. It will be interesting to see how this new technology will be adopted in various countries.