DAB+ vs FM
DAB+ vs FM: The need for better quality sound
Digital audio broadcasting is seen by many as the next step in radio, simply because it solves the cardinal problem faced by FM radio transmission.
This is the fact that FM radio waves from different radio stations in the same area cannot easily coexist with each other within the same airwaves. This results in the distortion of frequencies, and therefore, distortion of sounds.
DAB+ solves this problem by allowing for program signals to be encoded into digits, and sent over in fragments that can only be decoded by a digital radio receiver.
In addition, these fragments can be sent over a number of times so as to improve the chances of them being picked by a digital receiver.
This works out better since the computer chip in the digital receiver is able to process the arriving fragments into sound, even if they were received in different instances, from different sources.
This therefore allows for many different digital radio stations to exist within a specific area, and to not interfere with each other. Listeners then have a larger variety of choice in regards to what to tune into.
The digital radio signals are also capable of travelling over a larger area than analog signals, and this works out great for a listener who wants to remain tuned in to the same station despite being on the move.
To further ensure that signal reception remains uninterrupted, DAB+ operates over a much larger span of radio frequencies, allowing for a larger volume of program signals to be encoded into one particular signal.
In layman’s terms, this means that one digital radio signal has the capacity to carry up to six music programs, and this is what allows DAB+ receivers to offer an option of different channels while still on the same frequency.
This also makes it possible for digital signals to carry information in the form of text, which might arrive on the digital receiver as details about the track being played. This might include the song year, album title, artist name and so on.